We obtained this circuit in a technical documentation from the 90's. The circuit has its sensitivity adjustment in the potentiometer. The supply voltage can be reduced with a 1k resistor change.
Found in an English documentation from 1989, this font uses current components. Rectifier bridges can...
This circuit was found in the January 1989 issue of Radio Electronics magazine. The circuit sends...
The values of R1, R2, R3 and C1 depend on the signal to be integrated. The circuit is from Radio...