This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
When this circuit is activated the LED flashes for a moment indicating that the function has been...
This is the basic configuration for using a moving bar indicator or bargraph using the LM3914...
This circuit was found in old documentation. Transistors can be general purpose JFET types and the...