Using transistors at the time, this circuit was found in a 1970s documentation. Transistors support modern equivalents for 2A currents at least in the case of the output transistors.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
Using a 100 uH inductor for L1, this circuit will oscillate around 1 MHz. The frequency will be...
This low current solenoid driver was found in an ancient American documentation. The solenoid must be...