Flasher switch circuit independent of polarity of supply

H - Electricity – 03 – K

Patent

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340/58

H03K 3/64 (2006.01) B60Q 1/34 (2006.01)

Patent

CA 2031037

A two pin switch for automobile direction signal flashers is wired so that the prongs of the switch may be plugged into the respective socket in either orientation, i.e, the switch is independent of polarity. The switch comprises a relay having a driven circuit to throw the relay on a signal of specific polarity. Both prongs are connected into both the driven circuit and diode bridges are provided to block transmission of negative signal to the driven positive terminal and to block transmission of positive signal to the driven negative terminal and to block transmission of signal other than that of the specific polarity to throw the relay.

La présente invention fait état d'un interrupteur à deux broches pour feux de clignotement. L'interrupteur est câblé de manière à ce que les broches puissent être branchées dans leur prise respective dans n'importe quel sens, autrement dit, l'interrupteur est indépendant de la polarité. L'interrupteur est muni d'un relais ayant un circuit de commande qui l'excite en présence d'un signal de polarité particulière. Les deux broches sont connectées au circuit de commande, et des ponts de diodes sont prévus pour bloquer la transmission d'un signal négatif à la borne positive de commande, bloquer la transmission d'un signal positif à la borne négative de commande et bloquer la transmission d'un signal autre que celui de la polarité particulière nécessaire pour exciter le relais.

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