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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 27th September 2020, 09:12 PM   #171
amandarae is offline amandarae  Philippines
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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 27th September 2020, 10:29 PM   #172
amandarae is offline 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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Old 28th September 2020, 08:46 AM   #173
diplomata is offline diplomata  Portugal
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Hello everyone

And finally my H9KPXG works excellently, just connect the transformer to P1D and P2N, this for the 230V configuration and the strange readings are over.

In the pictures you can see H9KPXG already installed on the BA-3 chassis. If you are intrigued by the appearance of that same chassis, let's say I learned that you never buy the chassis first, or you end up with components that do not allow you to close the lid ...

A help for those who are in Europe and want to use Mouser to order components for H9KPXG, in Europe, Meanwell AC to DC module is not sold to private customers (only to OEM customers), you can replace it with one from Recom, Mouser part N: 919-RAC02-05SGA, the only difference between them is the price, the Recom being slightly more expensive.

And now I saw that Ripster had already indicated an alternative for the AC / DC module as well.

My thanks again to Mark Johnson for his generosity in sharing this project with us.

Best regards

Carlos
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Old 4th October 2020, 09:25 PM   #174
A321Drvr is offline A321Drvr
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Default H9KPXG Availability

Any one have any H9KPXG boards for sale in the USA?
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Old 4th October 2020, 09:52 PM   #175
6L6 is offline 6L6  United States
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PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
Might be a great opportunity to get a batch and sell the rest to other interested people!
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Old 4th October 2020, 11:49 PM   #176
Audiobear is offline Audiobear  United States
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PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
PM me. I might be able to spare one for you.
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Old 4th October 2020, 11:50 PM   #177
Audiobear is offline Audiobear  United States
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PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
And @6L6 is right. Ordering these boards was the first time I had ordered PCB by submitting the Gerbers. It's a good learning experience.
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Old 6th October 2020, 04:40 PM   #178
mvaldes is offline mvaldes  Italy
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Is there any one that have a couple of boards to sell in EU?
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Old 7th October 2020, 10:13 PM   #179
elwood625 is offline elwood625  United States
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My PCB's arrived from China, and I found the Meanwell relay's,only took a week to get them. The first one is for the Singing Bush SIT amp which I have a 48v 1000va torroid. The soft start has the 250 Joules thermistor for the mongo transformer.
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File Type: jpg IMG_1548.jpg (900.8 KB, 137 views)
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Old 7th October 2020, 11:54 PM   #180
Mark Johnson is offline Mark Johnson  United States
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PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
WHOA! That's spectacular, elwood625! Congratulations. I think you might be the first builder to drop in one of the 250 Joule ICL discs and show a photo -- it's extremely cool.

Very nice looking assembly with neat soldering and beautiful flux clean-off.

Now there's another 250 Joule Sumo Wrestler in town. Wimps had better get out the way.
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