Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th July 2020, 05:45 PM   #91
Mark Johnson is offline Mark Johnson  United States
diyAudio Donor
diyAudio Member
 
Mark Johnson's Avatar
 
Join Date: May 2011
Location: Silicon Valley
PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
To successfully apply a foreign, mysterious, undocumented, confusing pushbutton switch:

The always-works, never-fails method is to use an ohmmeter or continuity buzzer, to find the pair of terminals which are not-shorted-together when the button isn't pushed, and which also are-shorted-together when the button is pushed.

You can ignore whatever is engraved on the switch, in whatever language the engraver spoke, and you can ignore any mistakes or ambiguities in his labeling. Just find the pair that works for YOU, write it down in your permanent notebook, including a drawing, and that's that.
  Reply With Quote
Old 25th July 2020, 06:58 PM   #92
donhughes111 is offline donhughes111
diyAudio Member
 
Join Date: Dec 2019
Default it works

Quote:
Originally Posted by Mark Johnson View Post
To successfully apply a foreign, mysterious, undocumented, confusing pushbutton switch:

The always-works, never-fails method is to use an ohmmeter or continuity buzzer, to find the pair of terminals which are not-shorted-together when the button isn't pushed, and which also are-shorted-together when the button is pushed.

You can ignore whatever is engraved on the switch, in whatever language the engraver spoke, and you can ignore any mistakes or ambiguities in his labeling. Just find the pair that works for YOU, write it down in your permanent notebook, including a drawing, and that's that.
Thank you Mark. It works. In my case, NO (normally open) sets the correct logic. Gotta love the terminology. But, you are right. The proof is in the pudding.
Thank you.

Now for the board part.
The switch has a led with +-. I can power the led and it turns on - no matter what. If I connect your Led on lead to the switches +- will the led go on and off with the switch. That is on with the switch on and off with the switch off. I guess I could Power the board up with a trafo and do the same DMM test and see what happens.

Got my scope and am going to Q test jig all my trafos so retro fitting all my PS's
with snubbers.

My to do list is getting longer.

Thanks for your help and thanks for the projects.

Regards,
Don
  Reply With Quote
Old 26th July 2020, 01:13 PM   #93
booja30 is offline booja30  Spain
diyAudio Member
 
Join Date: Feb 2020
Location: Valencia
Does anyone have extra PCBs who would be willing to send to Spain?

I would be happy to do an order myself (maybe in an exotic color!), but mailing from Spain is so expensive it would be hard to offer attractively priced boards to others (incl. postage).

Also, I already have the DiyAudioStore soft start board built and working, so if anyone has a recommendation for a power switch relay only board, please PM me.

Last edited by booja30; 26th July 2020 at 01:17 PM.
  Reply With Quote
Old 26th July 2020, 02:47 PM   #94
kodabmx is offline kodabmx  Canada
Spreading triode love.
diyAudio Member
 
kodabmx's Avatar
 
Join Date: Oct 2011
Location: Toronto
PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
For relay on/off only, I use this but I don't know if you have 12V control voltage there already.

12V Bond Button Bistable Relay Module Car Start/Stop Self-Locking Switch | eBay

I use this for the 12V if I don't already have it.

12V 500mA AC-DC Power Supply Converter Step Down Module Electronic Transformer | eBay
__________________
If you can't learn to do something well, learn how to enjoy doing it poorly.
  Reply With Quote
Old 26th July 2020, 11:42 PM   #95
PRR is offline PRR  United States
diyAudio Member
 
PRR's Avatar
 
Join Date: Jun 2003
Location: Maine USA
PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
> the switch is normally open. Don't even know why you wire an open circuit but there are posts for it. ...... snip ...... In my case, NO (normally open) sets the correct logic. Gotta love the terminology.

"Normal" is sitting there, you not touching it.

When you TOUCH it, it is not "normal".

So "Normally Open", "TOUCHED", is logically "closed". Passes current.

Simplest-case, works like a door-bell.

In this case, Mark put in more stuff for alternate action.
  Reply With Quote
Old 6th August 2020, 06:26 AM   #96
nelsondog is offline nelsondog  Philippines
diyAudio Member
 
Join Date: May 2004
Location: Philippines
I would like to take the this time to commend Mark for his unwavering generosity by offering such a fine piece of engineering for free use to our community. Random acts of kindness that mean so much to people who do not possess the ability to create such useful, highly engineered pieces of art that makes me want to give praise to someone who honestly deserves it.
I’m sure I speak for many people here... Mark, thanks for being YOU!

*I would be interested in a single unit (220 volt version) if there’s anyone in or close to the Philippines willing to sell. Shoot me a PM!

I’m curious, how much is the cost of all the parts & pieces including the board itself?
  Reply With Quote
Old 6th August 2020, 07:11 AM   #97
spiggs is offline spiggs  United States
diyAudio Member
 
Join Date: Dec 2016
Location: Huntington Beach, CA
I added the soft start board in circuit with my Tubelab SSE and it powered up just as it should but I noticed that B+ is 10V lower than before. Without the board when I turned the power on B+ would spike to 500V then drop down to 430V. With the soft start board at power on the volts spike to 480V, then drop down to around 400V, then very slowly climb to about 420V. Does this make any sense or have I got something wrong?
  Reply With Quote
Old 6th August 2020, 08:57 AM   #98
nelsondog is offline nelsondog  Philippines
diyAudio Member
 
Join Date: May 2004
Location: Philippines
I don’t know why I didn’t just look at the Mouser link for pricing... got it now.
  Reply With Quote
Old 6th August 2020, 11:47 AM   #99
Mark Johnson is offline Mark Johnson  United States
diyAudio Donor
diyAudio Member
 
Mark Johnson's Avatar
 
Join Date: May 2011
Location: Silicon Valley
PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXG
Spiggs it sounds like your bypass relay might not be engaging. As though there is an assembly error or a bad component somewhere in the relay coil circuitry. Did you remember to install a shorting-block to select a bypass option (0.5, 1.0, 2.0 sec) ?? Do you hear the relay make a click sound?

One of the simple tests for H9KPXG that I found useful, was to disconnect the transformer primary(s) and instead, connect a >= 100 watt incandescent light bulb as the load. At turn-on, the bulb comes on bright, goes half dim, and gradually grows brighter. Then, at t=2.0 seconds, the bypass relay engages and (a) you hear an audible click; (b) the bulb goes to full brightness. This might be a quick and easy diagnostic test to check whether your bypass is working correctly.

_
Attached Images
File Type: png options.png (46.4 KB, 240 views)
  Reply With Quote
Old 7th August 2020, 12:28 AM   #100
spiggs is offline spiggs  United States
diyAudio Member
 
Join Date: Dec 2016
Location: Huntington Beach, CA
Quote:
Originally Posted by Mark Johnson View Post
Spiggs it sounds like your bypass relay might not be engaging. As though there is an assembly error or a bad component somewhere in the relay coil circuitry. Did you remember to install a shorting-block to select a bypass option (0.5, 1.0, 2.0 sec) ?? Do you hear the relay make a click sound?

One of the simple tests for H9KPXG that I found useful, was to disconnect the transformer primary(s) and instead, connect a >= 100 watt incandescent light bulb as the load. At turn-on, the bulb comes on bright, goes half dim, and gradually grows brighter. Then, at t=2.0 seconds, the bypass relay engages and (a) you hear an audible click; (b) the bulb goes to full brightness. This might be a quick and easy diagnostic test to check whether your bypass is working correctly.

_

Shorting block is installed at t=2 and I tried the 100w bulb test. Plug it in then hit the switch and bulb comes on, 2 seconds later I hear a click. Don't notice the bulb getting dimmer, or brighter. i also measured volts in at ~119, volts out ~113 after the click with bulb lit. Attached are pics of my board.
Attached Images
File Type: jpg IMG_20200806_171732.jpg (793.0 KB, 207 views)
File Type: jpg IMG_20200806_171757.jpg (460.2 KB, 205 views)
  Reply With Quote

Reply


PCB: low voltage On-Off switch drives AC mains relay \ includes soft start .. H9KPXGHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
soft start question ... no relay ... emilvv Power Supplies 15 15th August 2018 05:00 PM
where is soft start relay inserted in PSU circuit necplusultra Power Supplies 34 27th January 2013 12:09 AM
PCB Relay for ESP soft start board wytco0 Parts 6 8th August 2009 08:23 AM
Relay for soft start robomatique Class D 3 6th December 2007 06:38 PM
Soft start & Soft Switch circuit: can anybody help? m.parigi Solid State 95 22nd August 2005 03:32 PM


New To Site? Need Help?

All times are GMT. The time now is 10:35 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki