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.
This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old...
April 2017 - Mouser Electronics already has in stock the new HMC8400, Analog Devices low noise...
This circuit was found in documentation by Linear Technology from the 90's. The circuit makes...