Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
The block diagram of the Non-Motorized Variable Transformer Controlled Power Supply is shown below:
Three Phase Variable DC Power Supply
Specifications:
- AC to DC Power Supply, P/N 18194PS
- Input 240 VAC, 3 PH, 60 Hz,
- Output 0-6 VDC, 300 A (Knob Adjust outside enclosure)
- Ripple: 5% Max from 0 to 6V DC
- Output Voltage monitored by Digital Voltmeter Display
- Output Current monitored by Analog Ammeter
- Input circuit breaker (also used as an ON/OFF switch)
- Power ON light indicator
CEHCO is a variable transformer power supply manufacturer. To discuss your specific requirements, please contact us toll free at (800) 595-7096, or send us an email at info@cehco.com.
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