This circuit was found in a Popular Electronics from the 90's. The circuit can be used to convert signals to frequencies up to 25 MHz.
For a maximum current of 50 mA the capacitor must be from 470 nF to 250 V if the grid is 110 V and...
This circuit was obtained from an English magazine from 1976. The circuit operates two LEDs and...
The circuit we showed was obtained from our publication on relays and makes use of any...