| 摘要 |
POWER SUPPLY A power supply receives and rectifies mains voltage using bridge D1-D4. This is used by a pair of transistors Q1 and Q2 to alternate the supply to a transformer T via capacitor C8. Outputs are available from secondary windings T2, T6 and T7. Further windings T4 and T5 provide an internal power source for system circuitry which includes optical regulation via IC1 and optical switching control using IC2. |
