H - Electricity – 01 – H
Patent
H - Electricity
01
H
341/39
H01H 47/32 (2006.01) H01H 47/22 (2006.01)
Patent
CA 1263725
Solenoid Driven Metering Pump Supply Voltage Compensation Circuit Abstract of the Disclosure Circuitry is provided for use with solenoid driven apparatus, such as a metering pump, for example, which is typically powered by direct current from a full wave rectifier. The circuit compensates for variations in the supply voltage by adjusting solenoid "on-time" in substantially inverse relationship to the supply voltage by powering an RC charging network of an integrated circuit directly from the secondary of a transformer supplying power to the solenoid.
516745
Borden Ladner Gervais Llp
Saunders David N.
Wallace & Tiernan Inc.
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