The purpose of this heat detector is to find hot spots on a board or other locations. The sensor is an integrated circuit from the period. The circuit is from Radio Electronics from May 1985.
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...