Eporyeyornt Supply This power supply is not as common, is not to load when it refused to supply power. And will close itself when the output shock or short circuit.
Principles (assuming that the load).When the power house through a T1 will converts 12-volt power through the rest of D1-D4,To convert a DC voltage.
Then filtered through a C1 to flow more smooth.Before entering a leg to stand IC1.Where, as a DC regutator IC at pin 3 of 5 volts.Forward power to D6.
When C6 on the current, voltage across the D6 will act to bias Q2 work.And work with the Q1.When Q1 works like a short circuit to ground the RY1 work.
We can choose the output voltage by adjusting the selection pressure on S2.If the load or load disconnect the short circuit. D6 does not make the stream to cause no bias voltage to Q2. To Q2 does not work, and the Q1 does not work. We can choose the output voltage by adjusting the selection pressure on S2.So, it’s like opening the circuit RY1 not work like the circuit can not To the ground. The output voltage is 0 volt, there is no electricity to power the load.