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.
Found in an Electronic Design from the 90s, this circuit uses components from that time and can...
Using a 4046 PLL this circuit was obtained from the October 1994 issue of Electronics Now...
The circuit shown in the figure is intended to drive solenoids up to 2 A from a signal at the high...