illuminated toggle switch

schumpe · 28th June 2007, 03:51 AM

Hello, I use an Elpac WRI4212-760 12 VDC power supply for my reboxed Sonic Impact T-amp.
You can find all the specs here:

http://www.elpac.com/products/commer...uments/wri.pdf

I decided to add a power switch to the amp. I connected it like in this diagram

http://www.diyaudio.com/forums/attac...amp=1179145301

This is the switch I used:

I connected the two power wires to ACC and power on the switch and left ground blank.
It works well as long as I don't connect ground, but that way, it doesn't light up. So I connected ground to the ground from my power supply (the ring of the 5 pin DIN plug, also tied to the metal enclosure). As long as the switch is on, it lights up and everything is normal. But when I turn the switch off, the light goes off (expected) and my power supply starts making a fast "switching" noise. Don't know how to describe it. It's almost the same sound it briefly makes when it's switched on, but it keeps on doing it as if it's not happy.
The exact same happens, when I connect the ground from the switch to COM on my power supply.

I could just use the switch without the illumination, but I want to know what's going on.

Thanks
-

xlr81999 · 1st July 2007, 02:09 PM

this would work well in a car , and boats, and any type of craft that uses a 12 volt(a car battery) i tryed a toogle switch just like that that was a rocker illuminated for 12 volt, i was building a hearing augmentation device that ran on a 9 volt battery or a 9 volt ac adapter and the light didnt light up, it worked just fine but did not illuminate, i guess it needs all 12 volts

paulb · 1st July 2007, 04:13 PM

My guess is that you have 2 wires reversed. The switch might be such that it shorts its output to ground when switched off. Could you have wired the power supply output to the switch output, and the amp input to the switch input by mistake?

xlr81999 · 2nd July 2007, 09:17 AM

paul b who are you asking the questions too?

schumpe · 3rd July 2007, 02:11 PM

thanks for your comments guys.
xlr81999, he's asking me ;-)
paulb, i think you might be on to something here.
i should've thought of this, seems like an easy logical solution. i'll try it out when i have a chance.
-

TJNII · 3rd July 2007, 03:25 PM

Well, without a schematic of that little amp board we can only gues as to what, exactly, it is doing. What would probably be your best bet is to simply tie the power switch wires to the amp board and switch the power input. That way the light in your switch is directly across the powersupply and not drawing power through anything on that board.

schumpe · 3rd July 2007, 06:33 PM

Everything works as it should now. I had the wires reversed. It's hard to tell which is which from that connector. Wiring it to the supply lines directly would've been another option.
Next time I'll try to use my brain first before asking

Thanks.

28th June 2007, 03:51 AM	#1
schumpe diyAudio Member Join Date: Sep 2006	illuminated toggle switch Hello, I use an Elpac WRI4212-760 12 VDC power supply for my reboxed Sonic Impact T-amp. You can find all the specs here: http://www.elpac.com/products/commer...uments/wri.pdf I decided to add a power switch to the amp. I connected it like in this diagram http://www.diyaudio.com/forums/attac...amp=1179145301 This is the switch I used: I connected the two power wires to ACC and power on the switch and left ground blank. It works well as long as I don't connect ground, but that way, it doesn't light up. So I connected ground to the ground from my power supply (the ring of the 5 pin DIN plug, also tied to the metal enclosure). As long as the switch is on, it lights up and everything is normal. But when I turn the switch off, the light goes off (expected) and my power supply starts making a fast "switching" noise. Don't know how to describe it. It's almost the same sound it briefly makes when it's switched on, but it keeps on doing it as if it's not happy. The exact same happens, when I connect the ground from the switch to COM on my power supply. I could just use the switch without the illumination, but I want to know what's going on. Thanks -

3rd July 2007, 03:25 PM	#6
TJNII diyAudio Member Join Date: Jul 2007	Well, without a schematic of that little amp board we can only gues as to what, exactly, it is doing. What would probably be your best bet is to simply tie the power switch wires to the amp board and switch the power input. That way the light in your switch is directly across the powersupply and not drawing power through anything on that board. __________________ This space intentionally left blank

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1st July 2007, 02:09 PM	#2
xlr81999 diyAudio Member Join Date: Jul 2007	this would work well in a car , and boats, and any type of craft that uses a 12 volt(a car battery) i tryed a toogle switch just like that that was a rocker illuminated for 12 volt, i was building a hearing augmentation device that ran on a 9 volt battery or a 9 volt ac adapter and the light didnt light up, it worked just fine but did not illuminate, i guess it needs all 12 volts

1st July 2007, 04:13 PM	#3
paulb diyAudio Member Join Date: Jun 2001 Location: Calgary	My guess is that you have 2 wires reversed. The switch might be such that it shorts its output to ground when switched off. Could you have wired the power supply output to the switch output, and the amp input to the switch input by mistake?

2nd July 2007, 09:17 AM	#4
xlr81999 diyAudio Member Join Date: Jul 2007	paul b who are you asking the questions too?

3rd July 2007, 02:11 PM	#5
schumpe diyAudio Member Join Date: Sep 2006	thanks for your comments guys. xlr81999, he's asking me ;-) paulb, i think you might be on to something here. i should've thought of this, seems like an easy logical solution. i'll try it out when i have a chance. -

3rd July 2007, 06:33 PM	#7
schumpe diyAudio Member Join Date: Sep 2006	Everything works as it should now. I had the wires reversed. It's hard to tell which is which from that connector. Wiring it to the supply lines directly would've been another option. Next time I'll try to use my brain first before asking Thanks.

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