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85- to 440-vac input, 7w, dual-output flyback reference designSimple 12v, 1 amp smps with pcb and transformer winding details 3.3v 2amp smps circuit for leds.
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85- to 440-Vac Input, 7W, Dual-Output Flyback Reference Design - News
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15 12V Smps Circuit Diagram | Robhosking Diagram