A cold backup module power supply
A module power supply and cold backup technology, applied in the field of power supply, can solve problems such as failure to drive relays, and achieve the effects of avoiding impact, strong stability, and suppressing electromagnetic interference
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[0023] The invention overcomes the defect in the prior art that the command power must be sufficiently large to reliably drive the relay, and proposes a cold backup module power supply. By using two output power supply modes in the auxiliary power supply, while ensuring the normal power supply of the integrated chip, it also Sufficient driving power is provided for the relay, so that the module power supply of the present invention can still drive the relay to work normally when the driving command power is low. The method of the present invention will be described in detail below with reference to the accompanying drawings.
[0024] The module power supply of the present invention is as figure 1The shown includes surge suppression circuit 2, input filter circuit 3, power conversion circuit 4, output filter circuit 5, auxiliary power control circuit 7, auxiliary power transformer 8, isolation current sampling transformer 9, pulse drive transformer 10, main control module power ...
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