This circuit can be implemented with common components operating with low-intensity signals. The circuit was found in the April 1987 issue of Radio Electronics magazine.
The resistor values depend on the desired gain and the full scale of the indicator instrument. The power...
This low frequency oscillator with an operational amplifier of type 741 has adjustment of the mark...
This 3 + 3 V symmetrical source circuit uses an old operational amplifier. The circuit is from an...