Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational amplifiers. The circuit can be implemented with any modern equivalent operational.
This circuit is based on the 3 A LM350. The circuit is from Popular Electronics having a...
With calibrated RV1 it is possible to find a zener diode voltage. The integrated circuit is 0 741...
This transmitter for the 80-meter band (3.5 MHz) was found in an old documentation for radio...