Need 2 watts

Vivek · 17th July 2003, 08:13 AM

Hi all,
I have built a new discrete power amp. I just set the bias current as recommended in the article.
The article says ``adjust the output of the source so as to deliver 2 watt and let the amp be on for six hours with a dummy load.'' Here is my problem: How do I get an output of 2 watt? Do I just use my cd player and adjust it to the necessary voltage and current? Or what else can I do?
Thanks for any help.
Cheers,
Vivek

fdegrove · 17th July 2003, 08:21 AM

Hi,

I think they mean 2V RMS not 2W.
So just hook up your CDP to the amp and have a CD play in a loop during the bread-in period.

Cheers,

Vivek · 17th July 2003, 08:23 AM

You are probably right. But I think the whole idea is to check whether the transistors are stable and do not overheat, right?

Vivek

fdegrove · 17th July 2003, 08:27 AM

Hi,

Amongst other things, yes. But I fail to see why that would need six hours to find out.

In any case monitor your circuit for a while to see if all behaves as expected.

Cheers,

Vivek · 17th July 2003, 08:29 AM

I shall. Thanks, Frank.
I hope to post pics as soon as it is done.

Cheers,
Vivek

17th July 2003, 08:13 AM	#1
Vivek diyAudio Member Join Date: Nov 2000 Location: Bangalore, India	Need 2 watts Hi all, I have built a new discrete power amp. I just set the bias current as recommended in the article. The article says ``adjust the output of the source so as to deliver 2 watt and let the amp be on for six hours with a dummy load.'' Here is my problem: How do I get an output of 2 watt? Do I just use my cd player and adjust it to the necessary voltage and current? Or what else can I do? Thanks for any help. Cheers, Vivek

17th July 2003, 08:21 AM	#2
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	Hi, I think they mean 2V RMS not 2W. So just hook up your CDP to the amp and have a CD play in a loop during the bread-in period. Cheers, __________________ Frank

17th July 2003, 08:27 AM	#4
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	Hi, Amongst other things, yes. But I fail to see why that would need six hours to find out. In any case monitor your circuit for a while to see if all behaves as expected. Cheers, __________________ Frank

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17th July 2003, 08:23 AM	#3
Vivek diyAudio Member Join Date: Nov 2000 Location: Bangalore, India	You are probably right. But I think the whole idea is to check whether the transistors are stable and do not overheat, right? Vivek

17th July 2003, 08:29 AM	#5
Vivek diyAudio Member Join Date: Nov 2000 Location: Bangalore, India	I shall. Thanks, Frank. I hope to post pics as soon as it is done. Cheers, Vivek

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