With this simple circuit it is possible to simulate a telephone line for carrying out repairs on telephone sets. The transformer must be 36 V and the diode can also be 1N4004.
This circuit identifies the polarity of DC signals and if the signal is AC. The circuit is from...
In the figure we have a modified multiplier circuit that can operate with the sextuplicator with...
This circuit is from the Motorola Linear Databook published in 1990. The circuit for 1 kHz can be...