In DC variable power supply, we offer primary in AC volt and Secondary with DC variable output. We offer AC normal voltage from 0 to 270 volt in primary side and the secondary with DC volt in 0 to 270 volt in deferent capacity. These are available with features such as volt meter, ammeter indications MCB protection in primary side. It is controlled by variable transformer in AC and diode, capacitors and circuits to convert DC, MCB protection in primary side, voltmeter, main on lamb, and banana terminal in output side. We also offer filtered DC power with controlled ripple current through coil capacitor circuits.