Selective potting for controlled failure and electronic devices employing the same

  • US 7,187,528 B2
  • Filed: 03/31/2004
  • Issued: 03/06/2007
  • Est. Priority Date: 04/19/2001
  • Status: Active Grant
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First Claim
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1. A drive system for providing electrical power to drive an electrical load, the drive system comprising:

  • at least one electrical load terminal for electronic connection to a load;

    a power source for providing an electrical power signal;

    a controller for providing the at least one control signal;

    a safety circuit for receiving the at least one control signal and having an enable state and a disable state, wherein the safety circuit is electrically coupled to the power source and to the at least one load terminal, and wherein the safety circuit is configured to connect the electrical power signal to the at least one load terminal upon receipt of the at least one control signal and to disconnect the electrical power signal from the at least one load terminal upon no receipt of the at least one control signal;

    wherein the safety circuit is encapsulated by a potting material.

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