We found this circuit in a 1967’s Electronics World. The circuit can be made with modern equivalent transistors. The selection is made by the tuned coil.
This circuit consists of a constant current source for charging 12 V batteries. The charge is...
March 2017 - Microchip's new 8-bit PIC16F15354 microcontrollers can now be obtained from Mouser...
This circuit was obtained from Signetics documentation from the 80's. The components used are from...