Posted by dapj20 on Sep 16, 2020 in Discrete-Circuits, Oscillator, Power-Supply-Design
This is a unregulated supply for low power circuits. You may be able to regulate the outputs with zeners or small regulators like 78L05. The transformer can be hand wound in a mini ferrite pot core. you can use 2N2222 or any other fast transistor. The… more »