The invention discloses a
temperature control device for
agriculture and avocation production, which comprises a power circuit, a temperature detection and display circuit, a reference
voltage circuit and a
control circuit, wherein the power circuit is composed of a power switch S2, a power
transformer T,
rectifier diodes VD2 to VD5, filter capacitors C1 and C2, a three-
terminal voltage regulation
integrated circuit IC3, a
resistor R6 and a power indication
light emitting diode VL1; the temperature detection and display circuit is composed of a temperature sensor integration circuit IC1, a
control switch S1 and an LCD; the reference
voltage circuit is composed of a
resistor R1, a
capacitor C3, a
zener diode VS and an N1 inside an
operational amplifier integrated circuit IC2; and the
control circuit is composed of potentiometers RP1 and RP2, resistors R2 to R5, an
amplifier N2 inside the IC2, a
transistor V, a
relay K, a
diode VD1 and a
light emitting diode VL2. The
temperature control device is applicable to
agriculture and avocation production, and has the advantages that the structure is reasonably designed, the automatic degree is high, the temperature is accurately controlled, and the
temperature control range can be 2 to 200 DEG C.