Circuit diagrams and schematics - Electronic projects

Work cycle is C1 and R1 acts reduced AC Current Source to rectifier current is a DC Volt by bridge diode circuit which D1-D4 acts to change AC to DC with the C2 makes the filtering power DC to smoother will a zener diode acts to reduce voltage is equal to the number of volt [...]

I have received a few emails asking for a transformerless power supply. Here is such a supply. This supply uses no heavy step down transformer and has an extremely low parts count. The circuit can be built very small and can supply small currents for small projects. The major downfall of this supply is that [...]

This is circuiut power supply 9VDC no transformer,It easy circuit and small size. Volt output = Volt Zenerdiode. Output Current 100mA (min). It easy circuit and small size. Power Supply 9VDC no transformer You may know the reason that make power supply circuit have large-sized as a result , because transformer. Way this out be [...]