AUDIBLE_TURN_SIGNAL

Published:2009/6/28 22:52:00 Author:May | From:SeekIC

Gives 3500-Hz audible tone each time turn-signal light flashes on, to warn driver that signal has not been turned off when making less than right-angle turns.Schematic shown is for 12-V negative-ground systems. For 6.V negative-ground systems, cut values of R1 and R2 about in half. For positiveground systems, reverse connections to diodes and Sonalert.R1 and R2 are 2.7K 0.5 VV. D1 and D2 can be any general-purpose small-current silicon diode. SA is Mallory SC1.5 Sonalert.-A. Goodwin, Turn Signal Reminder, 73 Magazine, Holiday issue 1976, p 166.



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