Temperature of resistors in CCRC PSU

Beftus · 22nd October 2009, 08:40 PM

What's regarded as an acceptable temperature for the resistors in a CCRC PSU? Mine (3 Watt types) are at 51°C right now. Too hot?

CBRworm · 22nd October 2009, 08:44 PM

What type of resistor? 51°C seems ok, but I would wait for more confirmation. If that is not ok than I need to make some serious adjustments.

Beftus · 22nd October 2009, 09:13 PM

They're 3 Watt metaloxide resistors. I have 5 of them wired in parallel, combined resistance is 0.656 ohm. My mini-Aleph idles at ~1.25 A bias current per channel. Railvoltages are 16.6 Volts.

Magura · 22nd October 2009, 09:31 PM

51C for a resistor, is perfectly safe.

Magura

Beftus · 22nd October 2009, 10:35 PM

Quote:

Originally Posted by Magura

51C for a resistor, is perfectly safe.

Magura

Thanks, now I can sleep secured!

22nd October 2009, 08:40 PM	#1
Beftus diyAudio Member Join Date: Nov 2008 Location: Netherlands	Temperature of resistors in CCRC PSU What's regarded as an acceptable temperature for the resistors in a CCRC PSU? Mine (3 Watt types) are at 51°C right now. Too hot?

22nd October 2009, 09:31 PM	#4
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	51C for a resistor, is perfectly safe. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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22nd October 2009, 08:44 PM	#2
CBRworm diyAudio Member Join Date: Jan 2007 Location: S. Florida	What type of resistor? 51°C seems ok, but I would wait for more confirmation. If that is not ok than I need to make some serious adjustments.

22nd October 2009, 09:13 PM	#3
Beftus diyAudio Member Join Date: Nov 2008 Location: Netherlands	They're 3 Watt metaloxide resistors. I have 5 of them wired in parallel, combined resistance is 0.656 ohm. My mini-Aleph idles at ~1.25 A bias current per channel. Railvoltages are 16.6 Volts.