Following the American FCC rules, this 90s Radio Electronics circuit shows how to use a transformer to isolate the telephone line from an amplifier circuit.
Using the LM170 integrated circuit, this circuit was found in the May 1970 Radio Electronics...
The purpose of this circuit is to increase the selectivity of receivers with ferrite antennas. The circuit...
This circuit found in Hands On Electronics only connects a load, which in this case is an LED. The...