Clock-radio with automatically selected battery power

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

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Details

307 66, 58 23BA, H02J 700

Patent

active

039684172

ABSTRACT:
A clock radio including, within the housing for the clock radio, a relay coil connected across a line cord for the clock radio, normally open relay contacts connected for passing power to the clock radio from the line cord and normally closed relay contacts connected for passing power from a battery to an inverter input. The inverter output is connected to the clock radio, whereby when line voltage is lost the clock radio is automatically powered by the battery.

REFERENCES:
patent: 3136115 (1964-06-01), Calabrese
patent: 3818272 (1974-06-01), Rich

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