This circuit was found in February 1976, Radio Electronics magazine. The circuit is quite sophisticated using a fast-acting (thermometric) sensor and analog indicator.
We found this circuit in an old English publication. Transistors are general purpose and the block...
Found in a 90s Elektor, the purpose of this circuit is to protect a speaker in case of amplifier...
This circuit controls two relays from a single temperature sensor. The first fires when the...