Expert Atx Power Supply Wiring Diagram Atx Pin Diagram - Wiring Diagram

Expert Atx Power Supply Wiring Diagram Atx Pin Diagram - Wiring Diagram
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Expert atx power supply wiring diagram - In stand-by way of mode is principal power deliver blocked by using high-quality voltage at the playstation-on pin via resistor r23 from secondary electricity supply. Because of this voltage is opened transistor q10, which opens q1, which applies reference voltage 5v from pin 14 io1 to pin 4 io1. Switched circuit is absolutely blocked. Tranzistors q3 and this autumn are both opened and brief-circuit winding of auxiliary transformer t2. Due to quick-circuit isn't any voltage at the power circuit. Via voltage on pin four we will pressure most pulse-width on the io1 output. 0 voltage method the highest pulse-width. 5v means that pulse disappear. In a normal operation is strength deliver controlled with the aid of ic1. While transistors q1 and q2 are closed, then q3 and this fall are opened. Whilst we need to open one from electricity transistors (q1, q2), then we need to near his thrilling transistor (q3, q4). Present day goes through r46 and d14 and one winding t2. This present day excite voltage on base of electricity transistor and because of effective comments transistor goes quick to saturation. When the impulse is finished, then both interesting transistors goes to open. Fantastic comments dissapears and overshoot at the thrilling winding speedy closes energy transistor. After it is procedure repetead with second transistor. Transistors q1 and q2 alternately connects one give up of number one winding to positive or negative voltage. Electricity branch goes from emitor of q1 (collector q2) thru the third winding of thrilling transformer t2. Next throug primary winding of foremost transformer t3 and capacitor c7 to the digital middle of deliver voltage. Any person pushes the power button on laptop. Motherboard logic put to ground enter pin ps-on. Transistor q10 closes and subsequent q1 closes. Capacitor c15 starts his charging thru r15 and at the pin four ic1 starts offevolved decrease voltage to 0 thanks to r17. Because of this voltage is most pulse-width continuosly increased and main strength supply easily goes run. Line voltage goes via input filter circuit (c1, r1, t1, c4, t5) to the bridge rectifier. While voltage is switched from 230v to 115v, then rectifier works like a doubler. Varistors z1 and z2 have overvoltage protect characteristic on the road input. Thermistor ntcr1 limits input present day until capacitors c5 and c6 are charged. R2 and r3 are handiest for discharge capacitors after disconnecting energy deliver. While strength supply is hooked up to the line voltage, then in the beginning are charged capacitors c5 and c6 together for about 300v. Then take a run secondary strength deliver managed by way of transistor q12 and on his output might be voltage. In the back of the voltage regulator ic3 can be voltage 5v, which is going in to the motherboard and it's miles important for flip-on good judgment and for "wake on something" features. Next unstabilized voltage goes via diode d30 to the primary control chip ic1 and manage transistors q3 and q4. When primary energy supply is jogging, then this voltage is going from 12v output through diode d.

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