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Annunciator

  • US 4,336,463 A
  • Filed: 11/14/1980
  • Issued: 06/22/1982
  • Est. Priority Date: 07/12/1978
  • Status: Expired due to Term
First Claim
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1. A shut-down and first-out annunciator device for an internal combustion engine or the like comprising:

  • a. a plurality of parallel connected sensor switches which change condition when a fault condition occurs,b. a logic circuit which converts the change in condition on one of the plurality of sensor switches into a binary digital output indicative of the sensor switch which has changed condition and for creating a temporary shut-down signal,c. a digital display means for converting the binary digital signal produced by the logic circuit into a digital readout,d. shut-down means responsive to the temporary shut-down signal for creating continuous signals for latching the digital display and power FET having a control element by application of the signal to said control element,e. a first power supply circuit outputting energy only during normal operation to power the sensor switches, logic means, display means and shut-down means during normal operation, andf. a second power circuit comprising a battery for powering during and after shut-down a portion of the device including the display means and shut-down means but excluding the sensor switches.

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