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GELECTRONIC_DESIGN

2015-03-24 17:31  
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GELECTRONIC_DESIGN
GELECTRONIC_DESIGN
Using a charge pump and oscillator, this circuit uses a 7-kHz oscillator. When the clock is high, C and D are on, grounding the positive side of C1 and making negative voltage available at the VSS terminal of U2.With C= C1 + C2, the p-p output ripple is: Converter output impedance is about 100Ω and maximum current is 10 mA dc.