This Japanese radio is from the 60s, presenting excellent sensitivity and an output power of 100mW with 6 V power from ordinary batteries. The circuit is of the superheterodyne type.
Found in a 1969s American documentation, this circuit uses transistors from that time. The...
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
This low-current control circuit has a lamp as a load, but can have other types of devices, such...