H - Electricity
02
J
320/11
H02J 7/04 (2006.01)
Patent
CA 1256489
NEW SHUNT CONTROL ABSTRACT OF THE DISCLOSURE: An electronic shunt control circuit for use in conjunction with battery charging circuits is disclosed. The circuit precludes the possibility of current eminating from charged batteries from DC biasing the control coil and shunt therefor, when there is no AC electrical energy being supplied to the circuit -- such as during the occurrence of an AC power failure. Precluding such DC biasing is accomplished through the use of a plurality of blocking diodes located between the output to the battery and the control coil and shunt. A few milliamperes of current are acceptably permitted to flow back from the battery to the sensing and control circuit portion of the charging circuit, so as to maintain surveillance on the status of the battery and of the circuits; but no DC current is permitted, in the instance of an AC power outage to flow back from the battery through the control coil of the input AC reactor, due to the presence of the blocking or isolating diodes.
550334
Hase Alfred M.
Marks & Clerk
LandOfFree
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