The circuit is from the 1994 National Semiconductor Linear Applications Handbook but can be implemented with more modern operational amplifiers. The power supply must be symmetrical.
In the figure we have the circuit of a simple voltmeter with a 50 uA instrument and a 2k coil. The...
The power supply is indicated for the supply small 6 V motors with current up to 500 mA. The...
This circuit was found in an Electronic Engineering of the 80s. The circuit indicates when a...