This circuit triggers a relay when the set temperature is reached. The circuit is from an old documentation. The relay may be equivalent according to the transformer secondary voltage.
This instrumentation circuit can be applied to equivalent operational amplifiers. We found it in...
In the figure, we show how the integrated voltage comparators of the 139, 239 and 339 series can...
This circuit emits a signal in the AM range, whose modulation frequency depends on the intensity of the...