Precision automatic temperature control circuit
Source: InternetPublisher:smallembedded Keywords: Automatic temperature control temperature control circuit AD BSP Updated: 2020/04/18
Shown is a precision automatic temperature control circuit. The circuit consists of reference voltage source AD 581, temperature detection
AD590, voltage comparator LM311 and drive circuit.
AD581 is a 10. OOV precision reference
voltage source. Ri, R3 and AD590
constitute temperature detection and setting. R2 sets
the lower limit of temperature, R sets the upper
limit of temperature, and RP adjusts the temperature change range;
once RP is set, the temperature The control is determined
by the AD
590, whose output
current generates a voltage on R3, which
is heated by the VT driven resistance wire RL
after voltage comparison by LM311 .
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