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.
A frequency divider for digital signals can be constructed based on a single 4018 integrated...
This transmitter emits a modulated signal at a frequency given by the first transistor in the...
The figure shows how to use an LM3914 with a variable range moving point. The circuit has an...