The figure shows how to use the LM3914 Bargraph with an external reference voltage source. The reference cannot be greater than the supply voltage.
We found this flasher with two transistors in a 1992 publication. The transformer is the driver type...
Found in a Maxim documentation from the 1990s, this current-sensing amplifier uses components from the...
This circuit triggers a relay that can control a siren or other warning device when the first...