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PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
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Old Today, 09:12 PM   #171
amandarae is online now amandarae  Philippines
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Join Date: Oct 2004
Location: Diamond Bar, CA
Additional Pics.

First Pic- power connected to L,N, and Chassis, switch open, LED Off is illuminated, lamp (RadioShack) connected to P1D and P1N illuminated (85 Vac Measured across P1D and P1N, P2D and P2N).
Click the image to open in full size.



Second Pic - switch close, LED On illuminated, lamp still lit but brighter (120Vac measured across P1D and P1N)
Click the image to open in full size.

I saw Marks post (#126) and says

"Another experiment you can try, is to connect a very low wattage, mains-powered incandescent light bulb where the transformer primary would go. A bathroom night-light (3W in USA) would be perfect. Presto, the bulb does not light".
In my case, the lamp is always ON but just varies in intensity.
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Old Today, 10:29 PM   #172
amandarae is online now amandarae  Philippines
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Hah! I finally figured it out!

When configured for 115Vac double primary, if you leave one set (say P2D and P2N) open, it acts what I had experienced. Need both sets, I use 100K resistor, with a load. After that, works fine.

Mark I believe already mentioned similar this but took me a while to find the documentation on the thread.

Abe
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