OR gate for AC device?

Nov 01, 2004 1 Replies
A

Hi,



I have a load, which is a lamp of 240V and 50W, I need 2 sensor to drive it. Both sensors are 240V powered and output is 240V. How do I create an OR gate for this AC driven device so that if any one of the sensor is triggered, the lamp will light up? I can't join both output together as it will blown by the back fire if one output is high (240V) and the other is OFF.



Appreciate if you could send your suggestion to e snipped-for-privacy@pacific.net.sg as I seldom have access to newsgroup..thanks


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C

Two triacs should do it. Connect their main terminals in parallel and connect each sensor output to each gate or trigger lead (with appropriate current limiting and isolation). Sorry if you don't receive this but email is out of the question.

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