This circuit is from a 1976 amateur radio manual. The transistor can be the BD136 and the frequency adjustment is done in a potentiometer. The supply can be done with voltages from 6 to 15 V.
In this circuit, a light-sensitive SCR or Light Activated SCR determines the operation of an...
This divider by 8 is synchronized because it is implemented based on TTL or CMOS logic according to the...
We found this circuit in a 2002 documentation. As it uses still common CMOS integrated circuits, it can...