Schematic circuit diagram of low voltage and low voltage automatic conversion


Posted on Mar 28, 2007

Below is automatically converted to low-voltage circuit. 220V electricity through step-down transformer T after, VDw breakdown camel guide so VT1, VT2 off, solid state relays S


Schematic circuit diagram of low voltage and low voltage automatic conversion
Click here to download the full size of the above Circuit.

SR is turned off, this time by VD2 ~ VD5 bridge rectifier, C3 C2 filtered stream output DC voltage of approximately 14V; when when the AC input voltage is 110V, by T buck insufficient wear VDw, VT1 off, VT2 conduction, SSR is turned on. In this case, SSR, VD2 ~ VD3 and C2, C3 composed of a voltage doubler circuit, the output DC voltage of about 14V is still. And LED lights.




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