Published:2011/7/26 2:45:00 Author:Ecco | Keyword: Electric heating appliance, temperature controller | From:SeekIC
The electric heating apparatus temperature controller circuit is composed of the power supply circuit and temperature detection control circuit, and it is shown in Figure 3-78. Power supply circuit is composed of the power transformer T, rectifier diodes VD1-VD4, resistor B1, power indicator LED VL1, filter capacitor C1 and Zener VS. Temperature detection control circuit consists of thermistor RT, time-base integrated circuit IC, potentiometers RPl, RP2, resistors R2, R4, capacitors C2-C4, relay K1, diode VD5 and light-emitting diode VL2.
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