This circuit, with a 12 V input, was found in a Popular Electronics from the 1990s. Information is given about the ferrite-wrapped transformer. The transistor must be mounted on a heatsink.
This circuit intermittently activates a relay. It was obtained in a 1980 publication. In fact, we...
Suggested by a Popular Electronics, this small amplifier that has a detector to follow RF...
This source gently applies the voltage to the load, causing it to rise slowly, thus avoiding...