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Re: IR Remote Control [message #75175 is a reply to message #75173]

Mon, 07 January 2013 21:51

gofar99
Messages: 1903
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi Wayne, what kind of sauce do you serve with that spaghetti? Laughing

Regardless, I understand the problem with input and output connections. They always seem to be going every which way and look like crud. It does bring to mind something that many new diyers get wrong. That is using the shields on cables inside the unit to carry the signals and ground returns. The problems are ground loops and noise. The best way is to have all the grounds at the input jacks connected together and single ground wire from there going to the main circuitry. Then only connect the shields on the cables at the input ground end. DO NOT connect both ends. The use of a central ground at the inputs is essentially a variation of a "star" ground system and the remaining ground connections from things like the power supply should also connect there. Avoid at all costs using the same piece of wire to carry both signal and power grounds. You will get noise. Also a once common thing, but in actuality a very bad thing for quality audio is don't use the chassis as a ground for the audio circuitry. It is fine to use it as a shield and a protective measure (connected to the AC mains earth ground) but not for audio. The above is really quite simplified as there are whole books written on the subject. The method I mentioned though is the only way I could get some of my really high gain circuits to be -90 dbv quiet.

Good Listening
Bruce

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[Message index]

		IR Remote Control By: skywave-rider on Fri, 25 May 2012 15:46
		Re: IR Remote Control By: Wayne Parham on Fri, 25 May 2012 18:49
		Re: IR Remote Control By: skywave-rider on Sun, 27 May 2012 15:39
		Re: IR Remote Control By: Wayne Parham on Sun, 27 May 2012 19:50
		Re: IR Remote Control By: skywave-rider on Thu, 31 May 2012 13:52
		Re: IR Remote Control By: Wayne Parham on Thu, 31 May 2012 17:47
		Re: IR Remote Control By: Bill Epstein on Tue, 05 June 2012 13:16
		Re: IR Remote Control By: Wayne Parham on Tue, 05 June 2012 15:19
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 06:36
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 09:26
		Re: IR Remote Control By: Wayne Parham on Sun, 10 June 2012 09:53
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 11:08
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 12:22
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 13:58
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 19:30
		Re: IR Remote Control By: Wayne Parham on Sun, 10 June 2012 21:15
		Re: IR Remote Control By: skywave-rider on Thu, 14 June 2012 18:02
		Re: IR Remote Control By: skywave-rider on Sat, 16 June 2012 18:52
		Re: IR Remote Control By: Wayne Parham on Sat, 16 June 2012 21:26
		Re: IR Remote Control By: Bill Epstein on Sun, 17 June 2012 09:20
		Re: IR Remote Control By: skywave-rider on Sun, 17 June 2012 11:11
		Re: IR Remote Control By: skywave-rider on Wed, 20 June 2012 16:49
		Re: IR Remote Control By: Wayne Parham on Wed, 20 June 2012 19:12
		Re: IR Remote Control By: skywave-rider on Wed, 20 June 2012 22:36
		Re: IR Remote Control By: gofar99 on Thu, 21 June 2012 13:31
		Re: IR Remote Control By: Bill Epstein on Thu, 28 June 2012 05:53
		Re: IR Remote Control By: Wayne Parham on Thu, 30 August 2012 23:47
		Re: IR Remote Control By: gofar99 on Fri, 31 August 2012 15:33
		Re: IR Remote Control By: Wayne Parham on Fri, 31 August 2012 16:19
		Re: IR Remote Control By: gofar99 on Fri, 31 August 2012 21:25
		Re: IR Remote Control By: Wayne Parham on Mon, 24 September 2012 01:06
		Re: IR Remote Control By: Wayne Parham on Sun, 30 September 2012 11:46
		Re: IR Remote Control By: Shane on Tue, 16 October 2012 10:58
		Re: IR Remote Control By: Wayne Parham on Tue, 16 October 2012 11:22
		Re: IR Remote Control By: Shane on Tue, 16 October 2012 13:49
		Re: IR Remote Control By: Wayne Parham on Tue, 16 October 2012 15:23
		Re: IR Remote Control By: Shane on Fri, 19 October 2012 22:19
		Re: IR Remote Control By: Wayne Parham on Sat, 20 October 2012 10:14
		Re: IR Remote Control By: Shane on Tue, 30 October 2012 22:00
		Re: IR Remote Control By: Wayne Parham on Wed, 31 October 2012 20:50
		Re: IR Remote Control By: Wayne Parham on Tue, 20 November 2012 00:34
		Re: IR Remote Control By: gofar99 on Tue, 20 November 2012 19:41
		Re: IR Remote Control By: Shane on Tue, 20 November 2012 20:42
		Re: IR Remote Control By: gofar99 on Tue, 20 November 2012 21:06
		Re: IR Remote Control By: Shane on Tue, 20 November 2012 22:26
		Re: IR Remote Control By: Wayne Parham on Tue, 20 November 2012 23:27
		Re: IR Remote Control By: Wayne Parham on Sun, 30 December 2012 19:50
		Re: IR Remote Control By: Wayne Parham on Sun, 06 January 2013 20:58
		Re: IR Remote Control By: Shane on Sun, 06 January 2013 21:48
		Re: IR Remote Control By: Wayne Parham on Mon, 07 January 2013 11:04
		Re: IR Remote Control By: gofar99 on Mon, 07 January 2013 21:51
		Re: IR Remote Control By: Shane on Mon, 07 January 2013 22:23
		Re: IR Remote Control By: Wayne Parham on Tue, 08 January 2013 10:11
		Re: IR Remote Control By: gofar99 on Tue, 08 January 2013 10:40
		Re: IR Remote Control By: Wayne Parham on Tue, 08 January 2013 11:31
		Re: IR Remote Control By: Wayne Parham on Thu, 10 January 2013 23:06
		Re: IR Remote Control By: Wayne Parham on Mon, 14 January 2013 01:45

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