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XX-29863-D4
2000
1 pages
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Document:
pdp8mem bat
Order Number:
XX-29863-D4
Revision:
Pages:
1
Original Filename:
http://chdickman.com/pdp8/pdp8mem_bat.pdf
OCR Text
Theory of Operation When on mains power: - Diode Dn block charging of the battery. - The cathodes of Dn and Dn are pulled up to +5.6V so that MEM PWR is at +5V. +15V D2A C? D? R? When on battery standby: - Diode Dn..... D? B? MEM PWR 3.6V Lithium Battery D? D? D? +5V R? MEM CS BAT L MEM CS L +5V L? 3 Q? 2N3904 R? 2 POWER OK H B2V 1 TITLE FILE: PAGE REVISION: OF DRAWN BY:
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