This simple logic probe circuit was found in the August 1980 issue of Radio Electronics magazine. The circuit works with both TTL and CMOS logic.
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...