This oscillator provides a 1 MHz rectangular signal determined by the capacitors used. The circuit must be powered by a voltage of 5 V. The maximum frequency depends on the logic used.
This regulator type series for charging batteries from solar panels was found in a technical...
We can use high value electrolytic capacitors in alternating current circuits with the...
We found this circuit in an old French documentation from the 70s, but it can be assembled using...