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FAIL TO FLASH INDICATOR CIRCUIT

  • US 3,626,401 A
  • Filed: 03/19/1969
  • Issued: 12/07/1971
  • Est. Priority Date: 03/19/1969
  • Status: Expired due to Term
First Claim
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1. A fail to flash alarm circuit for a discharge lamp circuit including flash supply means incorporating a main capacitor and flash initiating means to discharge the flash supply means to the discharge lamp, the fail to flash circuit comprising alarm means responsive to the actuation of said flash initiating means, and alarm override means responsive to the current flowing in said discharge lamp and coupled to said alarm means for preventing actuation of said alarm means when current flows from said flash supply means to said discharge lamp and for allowing actuation of said alarm means when current fails to flow from said flash supply means to said discharge lamp, whereby said alarm circuit signals a fail to flash condition by the absence of current flow to the discharge lamp upon the actuation of said flash initiating means.

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