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Old 11th July 2005, 02:43 AM   #91
Htguy is offline Htguy  United States
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Default L200...

Hi,

Has anyone tried the L200 reg in any diy projects? Does it indead improve on the performance of the LM3x7? Is there a negative version of the L200?


Thanks

God bless...

Mark
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Old 18th July 2005, 07:55 PM   #92
r_jik45 is offline r_jik45  Japan
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Really? Noone?
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Old 18th July 2005, 10:43 PM   #93
Htguy is offline Htguy  United States
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Default any other improved Linear regs?

Hi,

So far no response on the L200 so is there anyone out there who has used another type of linear reg with lower noise and faster adjusting?

God bless...

Mark
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Old 20th July 2005, 12:06 AM   #94
lgreen is offline lgreen  United States
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Default Regulators

Ive use the LT1964 and LT1962 as regulators.
They worked very very well.
I could barely see the noise on my scope's highest setting.

(More info here)

Here is the circuit:

Click the image to open in full size.

Here is the single sided board I made (bottom view).
All hand soldered.
That is a dime, you see the devices are very tiny.

Click the image to open in full size.
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Old 23rd July 2005, 12:45 AM   #95
Htguy is offline Htguy  United States
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Default TI TL783 a good option...

Hi,

After spending many hours online looking at data sheets, it looks to me that the Texas Instruments TL783 3terminal reg is a pretty good option.

-zener vref (lower noise than bandgap ref)
-line reg ~1-2us
-load reg ~20us



Any thoughts one else have thoughts on this?

God bless...

Mark
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Old 6th December 2006, 09:07 PM   #96
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Default Improving LM3x7

Hi Fred,
luckily I found the thread about that subject and saw your worthy contribution, but somehow I get lost over several threads. Your post #34, is that the last word on this subject?
Can it be applied to the 3A and 5A LM-type also?
What, in your words, will be the exact improvements?
In all data sheet are shown the tracking preregulator. What excactly will happen there, and will that improve the LM3xx?

Since I could not write you an email, I hope you answer here, if you are not to tired to this endless discussion pro and con.
Thanks
Michael
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Old 6th December 2006, 09:17 PM   #97
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Default Re: Improving LM3x7

Quote:
Originally posted by Michael Mik
Hi Fred,

Since I could not write you an email, I hope you answer here, if you are not to tired to this endless discussion pro and con.
Thanks
Michael
The original thread is almost 3 years old now and Fred moved on a long time ago.
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Old 26th January 2011, 10:05 PM   #98
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Since I am waiting out a blizzard -- was looking at this thread and had the TAA 2/95 article sitting in my lap:

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Old 27th January 2011, 12:53 AM   #99
Telstar is offline Telstar  Italy
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Should this thread moved to the power supply forum?
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Old 27th January 2011, 10:25 AM   #100
AndrewT is offline AndrewT  Scotland
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Hi Jack,
are these simulations or measurements?
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