This circuit was found in a Mallory documentation from 1968. The integrated circuit is of the time, unusual in our day. Input sensitivity is 20 mV for 2 W output.
This is the complete circuit of a multimeter using a 50 uA instrument with a 2k coil. The circuit...
This high input impedance circuit makes use of two operational ones that are still common. The...
This circuit works as a useful field meter for radio amateurs. We found it in documentation from...