Suggested for use in cars and motorcycles, this circuit was found in a 90s Popular Electronics. The MOSFET can be anyone that supports the current of the lamps. Adaptations can be made to use LEDs.
The gain of this amplifier is 10 times and the excursion to the output voltage is 6.0 V (peak to...
Suggested by an old American documentation the circuit below keeps a battery charged and at the...
This crystal-controlled oscillator was obtained from an American 1980s documentation. The circuit...