Power resistor

Pure_Brew · 4th February 2010, 12:17 PM

Hello,
I have a resistor in my amp, one end which is attached onto the barrier strip where the hot lead from the AC connects to the power transformer. The other end of the resistor is attached to a blank position on the barrier and goes nowhere/no connection points.

What is the purpose of this?

This is the wire wound resistor:

Mills
1.3K Ω +/- 10%
MRW-15

Thank You,
Joe

AndrewT · 4th February 2010, 12:31 PM

1k3 is too high to be a soft start.

Mooly · 4th February 2010, 01:07 PM

Post a picture

If it's not connected at one end it's not used, and manufactures wouldn't "waste" the money of a redundant resistor.

Are there any "options" that can be fitted to whatever it is.

Pure_Brew · 01:04 AM

I'd like to provide a pic but it's not possible atm. Got me thinking though, its a resistor that literally goes to nowhere, but is attached from position 1 (hot) to the unused portion of a 5 position barrier. The other 4 leads from the transformer are all attached to positions 1,2(jumpered together)3,4 (jumpered together). Then maybe the 5th unused position would have been for the purpose of a 240v arrangement for the transformer (it's 120v now). I dunno just guessing at this point but that would seem logical.

But I guess if it isn't going anywhere, I can remove it since its really just in the way of soldering at this point.

cbdb · 5th February 2010, 01:09 AM

just a guess; it might be to supply low power AC to an optional circuit.

Enzo · 5th February 2010, 01:32 AM

How about letting us in on the secret? What amp is it?

Pure_Brew · 5th February 2010, 03:13 AM

Quote:

Originally Posted by Enzo

How about letting us in on the secret? What amp is it?

oops-! It's the PS Audio 200c. I suppose I could email them as well, they are very responsive.

Pure_Brew · 09:59 AM

I forgot I had taken a picture of this, at these angles awhile back. Maybe this will shed light.

Mooly · 5th February 2010, 11:39 AM

I can only suggest as my earlier post that it's used with some "option" or other. Maybe a remote on/off function... relay board etc... dunno

Having a wire run over the top of something that could get hot (the resistor when used) isn't good.

Pure_Brew · 5th February 2010, 10:52 PM

That wire goes to the power switch, not my handywork. But hearing that makes me feel better about removing the resistor entirely, since its in the way for re-attachment. (the transformer has been pulled and sent out for service).

4th February 2010, 12:17 PM	#1
Pure_Brew diyAudio Member Join Date: Oct 2009	Power resistor Hello, I have a resistor in my amp, one end which is attached onto the barrier strip where the hot lead from the AC connects to the power transformer. The other end of the resistor is attached to a blank position on the barrier and goes nowhere/no connection points. What is the purpose of this? This is the wire wound resistor: Mills 1.3K Ω +/- 10% MRW-15 Thank You, Joe

4th February 2010, 12:31 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	1k3 is too high to be a soft start. __________________ regards Andrew T.

4th February 2010, 01:07 PM	#3
Mooly diyAudio Member Join Date: Sep 2007	Post a picture If it's not connected at one end it's not used, and manufactures wouldn't "waste" the money of a redundant resistor. Are there any "options" that can be fitted to whatever it is. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

5th February 2010, 01:02 AM	#4
Pure_Brew diyAudio Member Join Date: Oct 2009	I'd like to provide a pic but it's not possible atm. Got me thinking though, its a resistor that literally goes to nowhere, but is attached from position 1 (hot) to the unused portion of a 5 position barrier. The other 4 leads from the transformer are all attached to positions 1,2(jumpered together)3,4 (jumpered together). Then maybe the 5th unused position would have been for the purpose of a 240v arrangement for the transformer (it's 120v now). I dunno just guessing at this point but that would seem logical. But I guess if it isn't going anywhere, I can remove it since its really just in the way of soldering at this point. Last edited by Pure_Brew; 5th February 2010 at 01:04 AM.

5th February 2010, 11:39 AM	#9
Mooly diyAudio Member Join Date: Sep 2007	I can only suggest as my earlier post that it's used with some "option" or other. Maybe a remote on/off function... relay board etc... dunno Having a wire run over the top of something that could get hot (the resistor when used) isn't good. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*


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5th February 2010, 01:09 AM	#5
cbdb diyAudio Member Join Date: Oct 2008 Location: Vancouver	just a guess; it might be to supply low power AC to an optional circuit.

5th February 2010, 01:32 AM	#6
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	How about letting us in on the secret? What amp is it?

5th February 2010, 10:52 PM	#10
Pure_Brew diyAudio Member Join Date: Oct 2009	That wire goes to the power switch, not my handywork. But hearing that makes me feel better about removing the resistor entirely, since its in the way for re-attachment. (the transformer has been pulled and sent out for service).

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