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Company Name: AMWEI Thermistor
Contact Person: Rosa
City: Shenzhen
Country: China China
Local Time:
E-mail: Premium Membership Required (Join Free Today)
Introduction: AMWEI Thermistor, professional manufacturer of PTC & NTC thermistors (THERMally sensitive resistors) and thermistor temperature sensors probe. PTC thermistors application cover over-current & overload protection, telecom, lighting switching, motor starting, temperature sensing & protection, self-regulation heating, linear PTC thermistor, silicon temperature sensor, NTC thermistors application cover power thermistor for inrush current suppressing limiting, NTC thermistor for temperature measurement, indicator, temperature compensation, temperature control, in either radial leaded, axial leaded. Can also make custom made thermistor temperature sensor probe assembly, in ring terminal, copper, ABS, Al, stainless steel tube or threaded,to suit screw-in-place, surface, screw thread, chassis, Pipe clip, water liquid immersion temperature measurement application.
Business Type: Exporter, Manufacturer
Areas of Interest: 1. Electronics & Electricals/Cables & Wire
2. Electronics & Electricals/Components
3. Electronics & Electricals/Electronic Instruments

Offers From This Member (11)

[Sell] AMWEI Axial Leaded Glass Encapsulated NTC Thermistor for Temperature Sensing Measurement View details for: AMWEI Axial Leaded Glass Encapsulated NTC Thermistor for Temperature Sensing Measurement
Axial Leaded Glass Encapsulated NTC Thermistor Description
AMF58 series NTC thermistor in glass encapsulated package,diode outline, with axial tinned Dumet ( Copper-Clad Ni-Fe) wire. Widely applied in temperature measurement, detection, indicator, monitoring, gauging, control, calibration and compensation, etc.
Axial Glass Encapsulated NTC thermistor Features
Operation up to 300C with excellent stability.
Nominal resistance at 25C can be from 2k โ€” 1.388 million ohm.
Tight tolerance on resistance and Beta value.
Glass body provides hermetic seal & voltage insulation, can operate in high temperature and moisture environment.
Small dimension, solid, convenient for automatic installation.
Fast heat induction, high sensitivity.
Axial Glass Encapsulated NTC thermistor Application Examples:
In household electronics temperature measurement, detection and control: such as air-conditioners, micro-wave ovens, electric fans, and electric heaters, electric cookers, induction cooker, hair driers, etc.
Temperature detection and compensation of automatic office equipment, such as copiers and printers.
In heating and air conditioning (HVAC): in heating cost distributors, for room temperature monitoring, in under-flooring heating and gas boilers, for determining exhaust gas or burner temperature, outdoor temperature sensor.
Industrial electronics: for temperature stabilization of laser diodes and photo-elements, for temperature compensation in copper coils or reference point compensation of thermo-elements, etc. Also for temperature measurement and compensation of meters, instruments, integrated circuits, quartz crystal oscillators and thermocouples.
In telecommunication: for temperature measurement, compensation and control and protection of mobile phones, battery pack and battery charger, etc.
Glass encapsulated package NTC thermistor can also be used in temperature measurement, monitoring, detection and control of medical equipment, food processing equipment, climate, etc.
» Electronics & Electricals/Components
[Sell] AMWEI PTC Thermistor Over-current Protector View details for: AMWEI PTC Thermistor Over-current Protector
Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection. PTC thermistor protector not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded. PTC thermistor over-current protector limits the power dissipation of the whole circuit by increasing their resistance and thus reducing the current to a harmless residual value. In contrast to conventional fuses, PTC thermistor resettable fuses do not have to be replaced after elimination of the fault but resume their protective function immediately after a short cooling-down time.
PTC Thermistor Over-current Protector Application
It applies in the over-current overload and short circuit protection of transformers, battery charger, switches, switch power supply, adaptor, meter, instrumentation, apparatus, electronic coils, control panels, air conditioner, automotive electron, etc.
Operating Principle of PTC Thermistor for Overload Over-current Protection
The operating principle is as indicated in the following. When a circuit is in the normal status, the current through PTC is lower than the rated current and PTC thermistor protector is in the normal state with small resistance value, which will not affect the normal operation of the protected circuit. In case of some fault in the circuit and the current is greater than the rated current, the PTC thermistor protector will become hot quickly and present a high resistance state, which sets the circuit relatively "off" to protect the circuit from damage. After the fault is removed, PTC thermistor protector will automatically restore its low resistance state and the circuit will resume normal operation.
Normally, when PTC thermistor is used as an overcurrent protection component, it is preferred to select maximum operating current, maximum operating voltage and proper specifications. Furthermore such factors should be taken into consideration as the dimensions of the components, rated zero-power resistance, operating temperature range, etc.
» Electronics & Electricals/Components
[Sell] AMWEI PTC Thermistor Heater View details for: AMWEI PTC Thermistor Heater
PTC Thermistor Heater Description
PTC Thermistors (thermal resistor), also called PTC stone, are ideal heating elements. Thanks to self-regulation properties, heating devices based on PTC thermistor technology can generally dispense with control and regulating components as well as with over-temperature protection, PTC thermistor heating elements are used wherever measurement and regulating equipment as well as heating devices must be housed in tight confines. PTC Heating elements can be designed to be square, rectangular, round, ring or doughnut form, or housed in aluminum, stainless steel, silicon casing.
PTC Heater Features:
Safe through temperature limiting characteristics.
No danger of fires since there are no glowing parts.
Dynamic, self regulating, and therefore energy efficient.
No excess temperature protection required.
Voltages from 6V to 480 V; special voltage applications up to 800 V.
PTC surface temperatures can be set from 50C to 320C.
Compact design.
Long service life.
PTC Heater Application:
Household appliance: travel irons, travel jug, bread warmer, water heater, water evaporator, espresso and coffee machine, tea warmer, dishwasher, icemakers, mosquito killer, insecticide, room deodorants, dryer, dehumidifier, plug-in aroma heater, fragrance, liquid vaporizer, cabinet heater, keep-warm plates, bimetal heater for door latches of washing machine, bathroom heater, etc.
Hair care: hair curler, hair crimper, hair drier, curling brush, steam curler, curling irons, curling tongues, hot comb.
Body care: wax depilators, facial sauna, inhalators, cosmetic warmers, ultrasonic bath, other heating of laminary case.
HVAC application: PTC fan heater, air heater, air curtain, electric air fresheners, air pre-conditioning.
Industrial appliances: oil-preheating, boiler-preheating, frost protection, valve heating, mould heating, binding system, laminator, hot glue gun, switch cabinet heaters, Anti-condensation, engine preheating, plastic film welder.
Automotive appliance: vehicle interior heating, fuel preheating, diesel filter heating, crankshaft housing ventilation, nozzle heaters for windshield washers, steering wheel heater, additional cabin heating.
Medical application: Inhalers, Vaporizer, Heating of anesthesia gas,massage.
Electronics application: IC heater, video monitor system heating, TCXO heater, Liquid Crystal display, Bimetal heater, CCTC Camera Housing, Display Boards.
PTC Thermistor (thermal resistor) heating elements can also be used in Instrumentation heater, Contact lens cleaner, telecommunication enclosure cabins heater, laboratory equipment, apparatus construction, viscosity of a liquid needs to be tightly controlled, such as printing.
PTC Heater Chips:
PTC heater Chips Surface Temperature: 50-320C.
Operating voltage 6 V -480V
Resistance at 25C (R25) :1-5000 ohm.
Dimensions:
In Round Diameter: 5~25mm
In Rectangle From: Length: 5~40mm: Width: 3-20mm
» Electronics & Electricals/Components
[Sell] AMWEI Thermistor make Linear Silicon PTC Thermistors Temperature Sensors, Alternative to Philips NXP KTY84, KTY83, KTY81 View details for: AMWEI Thermistor make Linear Silicon PTC Thermistors Temperature Sensors, Alternative to Philips NXP KTY84, KTY83, KTY81
AMWEI Thermistor make Linear Silicon PTC Thermistors Temperature Sensors, Alternative to Philips NXP KTY84, KTY83, KTY81
1. For AMWEI AM-LPTC600, rated resistance @100C 1000 ohm, tolerance 3%, 5%, operating temperature range -40C to +190C, alternative to Philips NXP KTY84/130, KTY84/150, KTY84/151.
2. For AM-LPTC1000, rated resistance @25C 1000 ohm,operating temperature range -55C to +175C, tolerance 1%, 2%, 3%, 5%, alternative to Philips NXP KTY81-1, KTY83-1 series, type no.KTY83-110, KTY83-120, KTY83-121, KTY83-122,KTY83-150, KTY83-151, KTY83-152.
3. For AM-LPTC2000, rated resistance @25C 2000 ohm,operating temperature range -55C to +150C, tolerance 1%, 2%, 3%, 5%, alternative to Philips NXP KTY81-2, KTY83-2 series, type no.KTY81-210, KTY81-220, KTY81-221, KTY81-222,KTY81-250, KTY81-251, KTY81-252.
Linear Silicon PTC Thermistors Temperature Sensors Description
Linear PTC Thermistor (LPTC) resistance increases with the temperature rises in linearity, displays a virtually linear positive temperature coefficient over their entire temperature range, suitable in measurement and control system, temperature compensation. As the construction material is mainly semiconductor monocrystalline silicon, also called silicon temperature sensor, silicon thermistor, sometimes referred to as silistors. As the temperature coefficient is positive, the silicon temperature sensors exhibit fail-safe operation when a system overheats. Furthermore silicon is inherently stable, so silicon temperature sensor are extremely reliable and have very long operational lifetimes. Hermetically sealed glass package, axial leaded,Dumet wire, 2 leads. Linear PTC thermistor in small dimension, tightness, convenient for automatic installation.
AMWEI Linear Silicon PTC Thermistors Temperature Sensors (LPTC) Features:
1. Silicon temperature sensors have a TK (temperature coefficinet) which is nearly constant over the complete temperature range. Temperature coefficient:α25/50≥0.7%/C.
2. Excellent long term stability, annual diversification rate≤0.01C/per year, temperature drifts during the lifetime of silicon temperature sensor are negligible.
3. Thermal Time Constant: 7 seconds max in still air.
4. Dissipation factor:1.5mW/C.min.
5. Insulation resistance: 100 Million ohm min. (DC=100V)
6. Maximum operating current:8mA.
7. Rated operating current: 5mA.
8. Rated power:50mW max.
9. Typical resistance @25C 600 ohm, 1000 ohm, 1600 ohm, 2000 ohm. Other R25 resistance, such as 200 ohm, 3000 ohm, 4000 ohm can be made upon request.
Linear Silicon PTC Thermistors Temperature Sensors Application:
• Industrial auotomation control equipment.
• Home appliance temperature detection and compensation.
• Precision circuit and crystal oscillator temperature compensation.
• Temperature compensation of silicon semiconducting devices.
• Temperature compensation of instrumentation amplifier.
• A/D converter temperature compensation. • Micro motor timing control.
• Automobile temperature detection and control.
• Medical equipment temperature detection and control.
• Linear PTC thermistor applications also include transmission, engine oil and coolant, heating system, overheating protection, amplifiers, power supplies, transducers, telemetry, computers, magnetic amplifiers, thermometry, meteorology, temperature regulation and over-temperature protection.
For more information concerning AMWEI Linear Silicon PTC Thermistors Temperature Sensors , please visit http://www.amwei.com/views.asp?hw_id=65
» Electronics & Electricals/Cables & Wire
[Sell] AMWEI PTC Thermistor for Lighting Time Delay and Switching Starting Application View details for: AMWEI PTC Thermistor for Lighting Time Delay and Switching Starting Application
Lighting Switching PTC Thermistor Description
Lighting Switching PTC Thermistor are used when a load in series with the PTC thermistor has to be switched off after a time delay and when switching occurs frequently.
A typical application of switching PTC thermistor is the preheating of electrode in energy-saving lamps or fluorescent lamps. Switching PTC can also be used as a power resistor for loading a capacitor, for example in power supplies or in control units of production equipment.
Lighting Switching PTC thermistor Application
It's applicable to various types of fluorescent lamp, electronic ballast and electronic energy-saving lamp. The PTC can be connected across the lamp resonator without changing the circuits. It can change hard start of the ballast and electronic energy-saving lamp to preheated start and the preheating time of the filament can come up to 0.4-2 seconds, which will extend the service life of the fluorescent tube by over 4 times.
» Electronics & Electricals/Components
[Sell] AMWEI PTC Thermistor for Telecom Over-current Protection View details for: AMWEI PTC Thermistor for Telecom Over-current Protection
Telecom PTC Thermistor Description
This series of ceramic PTC (positive temperature coefficient ) thermistors help provide protection against power cross, power induction surges and lighting surge defined in ITU, Telcordia, UL. Available in chip, radial-leaded coated and non-coated, SMD, twin vertical surface mount configuration. PTC thermistor overcurrent protector provides reversible, self-resetting protection against over-currents of telecommunication line protector units, improve the reliability of custom premises and network equipment.
Ceramic PTC thermistors can be found providing re-settable line protection at the exchange, monitoring hot spots and protecting ringers, battery feeds, transformers and relay circuits. Also used extensively to protect the mobile phone's battery pack against overcharging in land-based and radio mobile communications.
Advanced developments in telecom equipment in recent years have radically altered the protection requirements of both exchange and subscriber equipment. The PTC thermistor must protect the telephone line circuit against overcurrent, which may be caused by the following examples:
Surges due to lighting strikes on or near to the line plant.
Short-term induction of alternating voltage from adjactent power lines or railway systems, usually caused when these lines or systems develop faults
Direct contact between telephone lines and power lines.
To provide good protection under such conditions, a PTC thermistor is connected in series with each line, usually as secondary protection; However, even with primary line protection (usually a gas discharge tube), the PTC thermistor must fulfill severe requirements.
Surge pulses of upto 2KV can occur and in order to withstand short term power induction, the PTC thermistor must withstand high voltages. If the line has primary protection, a 220V to 300V PTC thermistor is adequate. Without primary protection, 600V PTC device is necessary. We can manufacture a series of PTC thermistor fulfilling both requirements.
Typical Application of PTC Thermistor in Telecommunication Protection
Central Office Switching Equipment (C.O): analog and digital line cards, POTS, T1/E1 equipment, xDSL modems and splitters, multiplexers, CSU/DSU, servers.
Primary Protection Modules: MDF (main distribution frame) modules, network interface devices (NIC).
Custom Premises Equipment, also known as subscriber terminal equipment (T.E.), IT equipment: Modem, phone sets, fax machines, phone wall outlet (plugs), alarm systems, answering machine, PBX systems, ADSL Splitters, internet appliance, POS terminals.
Access Network hardware, LAN WAN equipment, Powered Ethernet systems, VoIP (voice over IP equipment), integrated voice data (IVD), Set-top box (S.B), etc.
Telecom PTC Thermistor Features
Compliant with ITU-T K20 K21 K45
--Basic level lightning surges (10/700μs)
--Basic level power Induction (600V,1A,0.2S)
--Power contact criteria A/B (230V,15min.)
Suitable for continuous connection to main voltage 110/230 VAC in tripped (high ohmic) condition.
Round leadless disk thermistor availble for combined usage of PTC and primary protection, e.g gas arrestor.
Matching available with narrow resistance tolerance.
Tight resistance tolerance maintained after switching.
Negligible resistance drift after soldering or switching.
» Electronics & Electricals/Components
[Sell] AMWEI Radial Leaded, Epoxy Resin coated NTC Thermistor for Temperature Sensing, Measurement View details for: AMWEI Radial Leaded, Epoxy Resin coated NTC Thermistor for Temperature Sensing, Measurement
Radial Leaded, Epoxy Resin coated NTC Thermistor Description:
AMWEI AMF52 series NTC thermistor in Radial Leaded, Epoxy Resin coated form, Standard pin wire is tinned copper brass wire, optional in tinned kinked steel wire, PVC wire, PTFE wire. Widely applied in temperature sensing, measurement, detection, indicator, monitoring, gauging, control, calibration and compensation, etc., suitable for HVAC and white goods, automotive, battery pack application.
AMWEI Radial Leaded, Epoxy Resin coated NTC Thermistor Features
High measurement accuracy.
Tight tolerance on resistance and Beta value.
Fast response, small dimension.
Can operate in long time stability.
Nominal resistance at 25C can be from 2k--150k ohm.
Operating temperature range: -45C -- +125C.
Radial Leaded, Epoxy Resin coated NTC Thermistor Application
In household electronics temperature measurement, detection and control: such as air conditioner, refrigerator, deep freezer, soybean milk machine, bread machine, drinking machine, etc.
Medical equipment and apparatus temperature sensing and measurement .
Temperature control instrument.
Electronic temperature humidity meter.
Automobile temperature measurement.
Electronic table calendar.
Battery pack and battery charger temperature measurement, compensation, control and protection
» Electronics & Electricals/Electronic Instruments
[Sell] AMWEI NTC Thermistors Temperature Sensor Probe Assemblies View details for: AMWEI NTC Thermistors Temperature Sensor Probe Assemblies
NTC Thermistor can be assembled in housing in a variety of configurations for temperature sensing, measurement, detection, indicator, monitoring and control. Thermistor temperature sensor probe assemblies can conveniently attach to or be an integral part of any system to monitor or control temperature.The choice of assembly is dependent on the application. The primary factors which determine the optimum configuration of a thermistor assembly are the operating environment, mounting, time response and minimum dissipation constant.
The two factors which do vary considerably with thermistor sensor probe assembly design are time constant and dissipation constant. The time constant will typically be of greater duration in encapsulated thermistors. This is, of course, due to additional mass surrounding the thermistor element; therefore, extending the thermal transfer time. Dissipation constant will also be greater in assemblies. The additional housing mass serves well as a heat sink. Greater power is therefore required to induce self-heating. Both time constant and dissipation constant will vary with the selected thermistor and housing. Heat transfer properties of the housing, thermistor location, mass and wire type determine these constants.
Applications for temperature sensing include air temperature sensors, surface temperature sensors and immersion temperature sensors. Housings for air temperature sensors are often simple, inexpensive devices such as molded plastic shells, deep-drawn brass or aluminum cylinders, or even stainless steel tubes. Surface temperature sensors are designed to match the contour of the surface to be sensed, whether it's flat, curved, or round. Mounting holes or clips are often used to simplify installation of the sensor. Immersion temperature sensors are designed so that the sensing element will be surrounded by the medium to be sensed, often times a liquid. The sensing portion will normally protrude through a hole or orifice while a portion of the assembly will remain outside the medium to allow for the signal to be read. Immersion housings are usually threaded to allow them to be screwed into a hole or opening. Immersion part requests to be liquid and humidity prevention.
The material used for the housing will be dependent upon the temperature range needed, response time, cost, and special considerations such as UL, FDA or NSF requirements in food and/or medical applications. Some of the materials available include stainless steel, copper, plastic, teflon, brass, aluminum, epoxy and heat shrinkable tubing.
» Electronics & Electricals/Cables & Wire
[Sell] AMWEI Inrush Current Limiting Power NTC Thermistors View details for: AMWEI Inrush Current Limiting Power NTC Thermistors
Power NTC thermistor can be a cost effective device to limit the amount of inrush current in a switching power supply or other devices when the power is first turned on. Power NTC thermistor limits surge current by functioning as a power resistor which drops from a high cold resistance to a low hot resistance when heated by the current flowing through it.
Inrush-current limiters power NTC thermistor protect circuits from undesirably high currents, suppressing high inrush current surges, while its resistance remains negligible low during continuous operation. Thanks to their low resistance in the operating state, Power thermistor have a considerably lower power dissipation than the fixed resistors frequently used for this application.
Inrush Current Limiting Power NTC Thermistor Application
limiting surge current, suitable for the protection of switch mode power supply, UPS power, transformers, motors, various electric heating utensil, energy saving lights, ballast, various power circuit, amplifiers, colored displayer, monitors, color TV, filament protection, etc.
Power thermistor components can also be used for the soft starting of motors, for example in vacuum cleaners with continuous currents of up to 20 A.
Inrush Current Limiting Power NTC Thermistor Advantages:
Low cost solid state device for inrush current supression.
Minimise line current distortion and radio noise.
Protect switches, rectifier diodes and smoothing capacitors against premature failures.
Prevent fuse from blowing in error.
Inrush Current Limiting Power NTC Thermistor Features:
Resin coated disk thermistor with uninsulated lead-wires.
Suitable for both AC and DC circuits up to a voltage of 265 V(rms).
Wide range of resistance, current and dimension.
Excellent mechanical strength.
Suitable for PCB mounting.
» Electronics & Electricals/Components
[Sell] AMWEI PTC Thermistors Limit Temperature Sensor View details for: AMWEI PTC Thermistors Limit Temperature Sensor
PTC (positive temperature coefficient )thermistor switches at one particular temperature. Making use of the characteristics that the resistance of PTC thermistor increases sharply above curie temperature, when ambient temperature increases abnormally, protective circuit installed PTC thermistor will turn on or cut off loop through resistance changing, achieving thermal protection purpose. PTC thermistor protect such equipment and components as motors, transformers, power transistors and thyristors against over-temperature. A PTC thermistor is less expensive than a thermostat, and its switch temperature can be more accurately specified. It is also smaller and easier to design-in to electronic circuitry. Therefore PTC thermistor can be ideal devices for temperature detection, monitoring, indicating, limiting and over (excessive) temperature protection.
Typical Application of PTC Thermistor for Temperature Protection and temperature limiting sensors
Limit temperature measurement of Industrial electronics application.
Power supplies, switch power supply.
Home appliances, such as dish washers, washing machines, ironing machines, electric cookers, etc.
Electronic data processing and communications engineering (DC/DC converters).
Motor windings overheating Protection.
Automotive electronics.
Semiconductor heatsinks, enclosure panels, temperature-limited transistors.
Lighting applications.
PTC Thermistors Limit Temperature Sensor for Industrial Application
A PTC thermistor can be used effectively to detect whether a temperature limit in industrial equipment, liquids, etc, is exceeded. The PTC thermistor is mounted in thermal contact with the medium that has to be protected from overheating. When the rated temperature limit of the medium is reached, the resistance of PTC thermistor increases abruptly.In connection with a control unit, this signal can be used to automatically switch the power supply of a load.
Features of PTC Thermistor for Temperature Protection and temperature limiting sensors
2 Outlook construction: A-radial leaded epoxy resin coated form, B-metal tag lug form. Screw type metal cases or other construction can be made upon customer request.
PTC Thermistor Protection temperature: 60-130C
Quick response.
Long stability.
Small dimension, convenient for installation.
Do not need to be reset after protection.
» Electronics & Electricals/Electronic Instruments
[Sell] AMWEI Linear PTC Thermistors, Silicon temperature sensors View details for: AMWEI Linear PTC Thermistors, Silicon temperature sensors
Linear PTC Thermistor (LPTC) resistance increases with the temperature rises in linearity, displays a virtually linear positive temperature coefficient over their entire temperature range, suitable in measurement and control system, temperature compensation. As the construction material is mainly semiconductor monocrystalline silicon, also called silicon temperature sensor, silicon thermistor, sometimes referred to as silistors. As the temperature coefficient is positive, the silicon temperature sensors exhibit fail-safe operation when a system overheats. Furthermore silicon is inherently stable, so silicon temperature sensor are extremely reliable and have very long operational lifetimes. Hermetically sealed glass package, axial leaded, 2 leads, can operate in high temperature and moisture environment. Linear PTC thermistor in small dimension, tightness, convenient for automatic installation.
AMWEI Linear PTC Thermistor (LPTC) Features:
1. Silicon temperature sensors have a TK (temperature coefficinet) which is nearly constant over the complete temperature range. Temperature coefficient:α25/50≥0.7%/C.
2. Excellent long term stability, annual diversification rate≤0.01C/per year, temperature drifts during the lifetime of silicon temperature sensor are negligible.
3. Thermal Time Constant: 10 seconds max in still air.
4. Operating temperature range:-40C--+150C.
5. Dissipation factor:2.5--5mW/C.
6. Maximum operating current:Iopr=1.0mA.
7. Rated power:10mW.
8. Resistance at 25C optional 600, 1000, 1600, 2000 ohm.
Silicon temperature sensor Application:
Industrial auotomation control equipment.
Home appliance temperature detection and compensation.
Precision circuit and crystal oscillator temperature compensation.
Temperature compensation of silicon semiconducting devices.
Temperature compensation of instrumentation amplifier.
A/D converter temperature compensation. ยท Micro motor timing control.
Automobile temperature detection and control.
Medical equipment temperature detection and control.
Linear PTC thermistor applications also include transmission, engine oil and coolant, heating system, overheating protection, amplifiers, power supplies, transducers, telemetry, computers, magnetic amplifiers, thermometry, meteorology, temperature regulation and over-temperature protection.
» Electronics & Electricals/Electronic Instruments
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