This switched power supply was found in a 70s documentation. The basic components are from that time. The circuit operates at 200 kHz and has a ripple below 200 mV.
The configuration shown was found in an old Poptronics but can be easily assembled using a common...
This circuit is from an old American publication. The indicated transistor is oversized as the 15 V...
Found in a 90’s Radio Electronics magazine, this circuit uses a component from the time, difficult...