EFJohnson SMARTZONE 7780 User Manual

Page 65

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4-1

November 1999

Part No. 001-7780-500

CIRCUIT DESCRIPTION

SECTION 4 CIRCUIT DESCRIPTION

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4.1 POWER SWITCHING AND REGULATION

4.1.1 POWER SWITCHING

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DQG ,& WKH DXGLR DPSOLILHU VWDJHV DQG RWKHU SDUWV

RI WKH WUDQVFHLYHU

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4.1.2 5-VOLT REGULATORS (IC401, IC402)

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4.2 SYNTHESIZER DESCRIPTION

4.2.1 INTRODUCTION

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4.2.2 VCO (IC3), BUFFERS (Q10-Q12)

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WR WKH 7&;2 DV GHVFULEHG LQ WKH QH[W VHFWLRQ 7KH

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