This circuit was found in the March 1984 issue of Radio Electronics magazine. The sensor is a transistor. The module is a common type at the time.
Using NTCs or LDRs as sensors, the frequency of this circuit depends on the temperature or the...
This oscillator works with voltages from 1 V of alternative energy sources, such as a battery of...
We have here an ultra-simple amplifier stage of just one transistor, which can have some uses on...