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"Valve Amplifiers 3" - again :-) [message #30564 is a reply to message #30563]

Wed, 16 February 2005 06:26

Damir
Messages: 1005
Registered: May 2009

Illuminati (2nd Degree)

Page 47 - typical forward drop @10mA for cheap red LED is 1,7V , for the green 3,6V, for the blue 3,7V.
But, internal resistance is about 4,3 Ohms for the red, green - 30 Ohms, blue - 26 Ohms.
Author advises (pages 177- 178), that LED biasing is best for Ia>10mA, high Rl, and small output signal voltage (distortion `cos of non-linear LED resistance).

P.S. - I can`t resist, I know that you don`t like citations...

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[Message index]

		Capacitors By: Manualblock on Mon, 14 February 2005 16:13
		Re: Capacitors By: colinhester on Mon, 14 February 2005 16:56
		Re: Capacitors By: Manualblock on Mon, 14 February 2005 17:33
		Re: Capacitors By: colinhester on Mon, 14 February 2005 17:44
		Re: Capacitors By: Manualblock on Tue, 15 February 2005 06:30
		Re: Capacitors By: PakProtector on Tue, 15 February 2005 07:26
		Re: Capacitors By: Manualblock on Tue, 15 February 2005 15:37
		LED's By: PakProtector on Tue, 15 February 2005 16:40
		Re: LED's By: Wayne Parham on Tue, 15 February 2005 22:38
		Re: Capacitors By: Wayne Parham on Tue, 15 February 2005 22:40
		two words... By: PakProtector on Wed, 16 February 2005 05:49
		but... By: PakProtector on Wed, 16 February 2005 05:52
		"Valve Amplifiers 3" - again :-) By: Damir on Wed, 16 February 2005 06:26
		"Valve Amplifiers 3" By: PakProtector on Wed, 16 February 2005 06:43

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