Annunciator for automotive signal light flashers

Details Annunciator for automotive signal light flashers Annunciator for automotive signal light flashers

1989-10-20

1990-12-25

Orsino, Joseph A.

Communications: electrical

Land vehicle alarms or indicators

External signal light system

340384E, B60Q 126

Patent

active

049806696

ABSTRACT:
An annunciator is presented that, when connected to an automotive signal light flasher, emits an agreeable, short tone each time the signal lights are turned on by the flasher. It is suitable for use in automotive emergency flasher light circuits as well as turn signal circuits. It connects to the flasher via a special, flat interconnector that does not interfere with the normal location or operation of the flasher itself. It operates by allowing a capacitor to charge during the `open` portion of the flasher's cycle, and as the flasher closes, discharges the capacitor through an oscillator, which in turn drives an audio transducer. The tone thereby produced is pleasant and not "elctronic` sounding because it decays with the charge of the capacitor.

REFERENCES:
patent: 3343123 (1967-09-01), Troesh
patent: 4196415 (1980-04-01), Haar et al.

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