Improvements relating to current indicators

Details Improvements relating to current indicators Improvements relating to current indicators

G - Physics

01

R

G01R 19/15 (2006.01)

Patent

CA 2309064

A current detector/indicator for DC has a transistor (1) and an LED (2). They are arranged so that current flow through the LED causes the transistor to conduct, shunting excess current away from the LED and through the transistor. For AC, the circuit can be doubled, with transistors and LEDs arranged with inverse polarity. A triac (15) may supplant the two transistors, with parallel, opposed LEDs (16) in its gate circuit.

L'invention concerne un dispositif détecteur/indicateur de courant. Pour le courant continu, le dispositif comprend un transistor (1) et une diode électroluminescente (2), disposés de façon qu'un courant qui traverse la diode rende le transistor passant, et que le courant excédentaire court-circuite la diode et traverse le transistor. Pour le courant alternatif, on peut doubler le circuit et donner aux transistors et aux diodes une polarité inverse. Un triac (15) peut remplacer les deux transistors et comporter dans son circuit de gâchette des diodes (16) opposées parallèles.

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