Dual power supply with soft power

Dual power supply with soft power

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Dual power supply with soft power. Soft power for a large transformer is made by taking the series resistance of 100 ohms/10 watt or two resistors 47 ohm / 5 watts in the primary circuit, the resistance is shorted by the relay after ± 1.5 seconds. This avoids a sudden use of the current during power up. A Zener diode can be adjusted to allow the use of various voltage relay.

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1 Title: Dual power supply with soft power
2 Upload by: psu
3 Upload date: January 14, 2012
4 Image link: https://i1.wp.com/powersupply33.com/wp-content/uploads/2012/01/Dual-power-supply-with-soft-power.jpg?fit=606%2C585
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