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30th March 2007, 12:56 AM
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#1 |
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diyAudio Member
Join Date: Mar 2006
Location: bc
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LM385 Adjustable voltage ref. diode as LED bias?
Hi Guys,
I'm wondering is the LM385 would do a better job then LED as for cathode bias? The LM385 can be adjusted from 1.24V to 5.3V and its dynamic impedance is 1 ohm. The data sheet is http://www.national.com/ds/LM/LM185-ADJ.pdf Thanks |
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30th March 2007, 04:25 AM
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#2 |
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diyAudio Member
Join Date: Dec 2004
Location: South Florida, USA
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Here is what an LM385 really looks like to your circuit. Compare to the "schematic" of an LED.
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Brian |
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30th March 2007, 04:27 AM
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#3 |
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diyAudio Member
Join Date: Dec 2004
Location: South Florida, USA
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Which leads to this kind of behavior. Compare to the dynamic Z of an LED.
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Brian |
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