This two-digit (up to 99) circuit divides a signal by values programmed by the BCD switches. The circuit comes from a Radio Electronics from February 1989.
This second-order filter was found in a documentation from the 90's. It can be implemented with...
To implement this function, we need a relay with double contacts, as shown in the figure. With a...
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...