26-03-1969 дата публикации
Номер: GB0001146563A
Автор:
Принадлежит:
... 1,146,563. Battery charging systems. INTERNATIONAL STANDARD ELECTRIC CORP. 17 March, 1967 [18 March, 1966], No. 12672/67. Heading H2H. Self-service battery charging apparatus of the type in which the customer inserts one or more coins to determine the charging time, comprises a conventional fixed polarity charging unit I and a coin-operated control device 2 which includes a run-down clock 4 and means to detect the polarity of the connected battery 3 and to operate change-over switches accordingly so that the battery is correctly connected to the charger 1. The battery polarity is detected by the circuit comprising relays K2, K3, diodes 10, 11 and a current-limiting non- linear resistor 9, the relays K2, K3 respectively controlling contacts K21, K22, K23 and K31, K32, K33. Connection of the battery 3 to terminals 12, 13 causes actuation of the appropriate relay and connection of the battery to the charger terminals 14, 15 through a high resistance 8 which permits only negligible charging ...
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