This circuit was found in an American documentation from 1969. The circuit is a multi-indicator with resistors typically 47 k for R1 and 100 k for the others.
In the figure we have an amplifier using the 741 operational amplifier without the need for a...
This electrical circuit monitors fuses and lamps and can be installed in the mirror itself. The...
This precision circuit can provide timings from 0.2 milliseconds to 3 minutes accurately. The...