We found this circuit in an old English documentation. Transistors support modern equivalents. The circuit converts signals in the 5 to 15 MHz band for tuning into a common medium wave radio.
This circuit for a 16-channel infrared transmitter was found in the August 1984 issue of Radio...
We found this circuit loader in a French magazine Electronique Radio Plans from July 1993. The...
This charger is from an old publication of 1975. The PNP transistor can be the BC558 and the NPN...