This circuit allows the use of an electret microphone with a 1.5 V source. We found it in the Encyclopedia of Electronic Circuits volume 5 from 1995.
Found in English documentation, this circuit uses a thermistor as a sensor. The trigger point is...
This 1.5 A circuit is from the LM117 manual. The LM350 can be used for higher current, and the...
This ultra-simple tester and component gauge lets you perform continuity testing and even evaluate...