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Inductive circuit arrangements

  • US 4,820,986 A
  • Filed: 12/11/1986
  • Issued: 04/11/1989
  • Est. Priority Date: 12/16/1985
  • Status: Expired due to Term
First Claim
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1. An inductive circuit arrangement comprising:

  • four switches connected to form four arms of a bridge configuration,current supply terminals at opposite ends of the bridge,inductive coil means connected across the bridge so that current can flow in either direction through the coil means depending on the setting of the switches,a series connection of capacitor means and a series switch connected across the supply terminals, andmeans for operating said four switches and said series switch so as to connect the capacitor means across the coil means at least for a sufficient period of time until the current flow through the coil reduces to zero by charging of the capacitor means and so as to isolate said capacitor means from the bridge configuration to enable current to continue to flow through the coil.

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