Found in the March 1989 issue of Radio Electronics magazine, this circuit is used to test printer and other cables. The indication is made by LEDs.
We find this circuit in an old American documentation. It can provide a 25 dB compression in a...
This amplifier with a 9 MHz passband and 10 voltage gain with two transistors was found in...
This circuit safely replaces common locks, since, instead of the key, the opening is made with the...