We found this circuit in a magazine 73 for radio amateurs from the 80's. The circuit makes use of an epochal component which is programmed according to the table beside the diagram.
This circuit was found in a 90s American documentation from the 90s. The components are from that...
In the figure we have the circuit of a clamp-type microammeter described in the Radio Electronics...
The voltage-gain for this amplifier is 10. Other operational amplifiers can be use and the Power...