The capacitor used in this circuit can have values between 5 and 30 uF. The circuit is of old documentation for radio amateurs. Observe the special source used in the supply.
This circuit matches a source of high or medium impedance audio signals with a low impedance...
In the figure we have the circuit of a clamp-type microammeter described in the Radio Electronics...
In other circuits we have seen a circuit for this application whose calculations have been...