This circuit is used to turn on the headlights when it gets dark. The circuit is from an Electronics Now magazine from October 1998. The power transistor must be equipped with a heatsink.
Originally recommended to give a tone of transmission in equipment of the 60s (tubed) this circuit is...
Found in a 1967 Electronic Design, this circuit operates in a range of 0 to 1 V input with...
This small transmitter circuit has a range of about 100 meters, and the antenna must be connected to...