This simple bridge circuit can be used for impedance or resistance measurement using a high impedance earphone as an indicator. The circuit is from an American 80's documentation.
The source of the figure was found in a 1981 magazine and is recommended for the experimenter's bench. The...
The purpose of this circuit is to imitate the dripping of a faucet. The circuit was found in a...
This switching regulator circuit with less than 100 mV ripple was found in a 1980s documentation. The...