Coin telephone monitor circuit

Details Coin telephone monitor circuit Coin telephone monitor circuit

H - Electricity

04

M

379/75

H04M 17/02 (2006.01) H04M 3/24 (2006.01)

Patent

CA 1160781

TITLE COIN TELEPHONE MONITOR CIRCUIT ABSTRACT OF THE DISCLOSURE A circuit which monitors a coin telephone for coin ground, coin collect, coin return, stuck coin and ground fault conditions. Hall effect devices are used to detect the status of these conditions and to provide isolation between the coin telephone line and the coin telephone monitor circuit.

376583

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