Direction indicator systems for vehicles

Details Direction indicator systems for vehicles Direction indicator systems for vehicles

1981-04-20

1982-12-21

Yusko, Donald J.

Communications: electrical

Selective

Having indication or alarm

340641, B60Q 134

Patent

active

043652336

ABSTRACT:
A direction indicator system for a road vehicle includes a selector switch operable to select the operation of one or the other set of direction indicator lamps of the vehicle, the selector switch being connected in series with a pair of relay contacts. An oscillator is provided for driving the relay the oscillator including a capacitor having a charge/discharge circuit and switch means having a control input. A reference voltage source is provided including switch means also having a control input. The system includes a comparator for comparing the capacitor voltage and reference voltage the comparator providing a signal to control the relay when the voltages are substantially equal.

REFERENCES:
patent: 4236143 (1980-11-01), Mizuno
patent: 4266212 (1981-05-01), Mizuno

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