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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Nov 29, 2017 10:57 pm Post subject: Power Supply Hookup |
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Hi Kal,
The power supplies I bought from you look to have the positive on the inside rather than the outside of the out terminals. Can you confirm? Also, can you tell if it matters if polarity matters when hooking up the doorbell transformer 12v out to the IN on the power supply? I didn't see any positive or negative markings. Pic attached.
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+5 DC looks to be inside rather than outside |
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Nov 29, 2017 11:37 pm Post subject: |
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Thanks Kal. I'll use a voltmeter as suggested (just learning this stuff) but I've attached a picture as best I can of the top view.
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Wed Nov 29, 2017 11:39 pm Post subject: |
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A brightened pic
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Spike Innovations TheElectricBrewery.com manufacturer
Joined: 26 Feb 2011 Posts: 245 Location: ME
Working on: Your Brewery!
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Link Posted: Thu Nov 30, 2017 3:22 am Post subject: Re: Power Supply Hookup |
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mike0416 wrote: | Hi Kal,
The power supplies I bought from you look to have the positive on the inside rather than the outside of the out terminals. Can you confirm? Also, can you tell if it matters if polarity matters when hooking up the doorbell transformer 12v out to the IN on the power supply? I didn't see any positive or negative markings. Pic attached. |
You are correct. The positive for the DC out is on the inside of the 4 terminals. From your first pic it would be:
AC IN | AC IN | DC+ | DC-
The OUT marking designated the side that is the DC (adjustable) out portion of the converter.
Good luck!
_________________ Official manufacturer for TheElectricBrewery.com. Click here to order our products!
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Mon Jan 15, 2018 11:33 pm Post subject: |
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Hi Kal,
So I've been testing the power supply as you suggested. It turns out it was the doorbell transformer. I actually got the voltage meter up and running and it was showing a steady number for awhile, then the panel down. When I started it back up again a while later the meter wasn't as bright and the number value kept jumping around (220, 240, 320, etc.). I changed my voltage meter to DC and measured the DC out values of the power supply. The best I could get was 2.5V no matter how much I turned the screw on the adjustable power supply.
Note that I tried two doorbell transformers, one measuring about 7V out and the other measuring 18V out. Either one did not have a different impact. I ordered two new power supplies from you last week. I'll try them when they get here, but I'm wondering if you've seem this before and know the root cause. Thanks.
- Mike
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Mon Jan 15, 2018 11:56 pm Post subject: |
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Hi Mike,
If the doorbell transformer isn't working correctly then everything after it will most likely not work correctly.
If the doorbell transformer is working correctly and putting out anywhere from 8 to about 24 VAC and you can't get the power supply output voltage correct without the meter attached (that part's important), then you may have had bad power supplies. If you have a power supply that seems to work correctly without a meter attached that drops voltage with a meter attached, the meter is likely faulty.
Kal
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Tue Jan 16, 2018 2:00 am Post subject: |
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Hi Kal,
The transformers are working well. I get about 18 V out with the new ones I bought. I also test about 18 V into the power supplies. It’s the DC out that I think has the problem. No matter what I do I can’t get any more than 2.5 V from the DC out of either power supply. I ordered some new ones from you last week so I’m going to wait and see if those power supplies fix things now that I have confirmation that the transformers are fine. I’ll let you know. Fingers crossed…
Side question: When I’m tightening up all of the hardware like the ball valves to the nipples to the quick disconnects etc. once I put the Teflon tape on how tight do I actually need to make these connections? Obviously I want to ball valves to line up correctly as well as some of the 90° elbows to point outwards like on the pumps. I don’t want to over tighten anything but at the same time I don’t want anything leaking. Is hand tight acceptable plus a half to a fulll turn?
Regards,
Mike
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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mike0416
Joined: 03 Jan 2017 Posts: 62
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Link Posted: Tue Jan 16, 2018 3:39 am Post subject: |
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Thanks
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cmkopp11
Joined: 26 Jan 2018 Posts: 19 Location: San Diego
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Link Posted: Wed Mar 07, 2018 6:24 pm Post subject: |
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This thread saved me from going off the deep end looking for a datasheet. Thanks guys. I was convinced the plus was for the capacitor as well.
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