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Posts that Interest me

PC Crossovers

Posted 10th February 2011 at 07:36 PM by DougL

This looked Interesting.

I'll have to research that.
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Great Snubber Article

Posted 13th October 2010 at 02:36 PM by DougL
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Lynn Olson's Book List

Posted 30th September 2010 at 02:52 PM by DougL

This speaks for itself:
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Posted 30th July 2010 at 10:10 PM by DougL
Updated 14th September 2010 at 06:33 PM by DougL

This looks cool.
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Posted 1st July 2010 at 10:28 PM by DougL
Updated 14th September 2010 at 06:34 PM by DougL

Motorola used one on their first cell phone.

Chauser eleptical low pass with nulls at 4.5k and 9k iirc.

Now I am wondering if I could create a "passive line level" with this, avoiding inductors.

Here is a link to a design article:
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Active inductor substitutes

Posted 3rd May 2010 at 01:45 PM by DougL
Updated 14th September 2010 at 06:34 PM by DougL

Here is a circuit I like.
Not excessive voltage drop, no absolute expectations on voltage or current.


A link to the discussion in the Tube Forum
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Power supplies for B1

Posted 9th February 2010 at 07:51 PM by DougL
Updated 28th April 2010 at 06:44 PM by DougL

My brother gave me a Pass B1 board.
Now that he has his working I thought I would look at mine.

I am going to use this space to record all of the links and tricks. Some of the links will be very basic.
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CSS bias

Posted 12th January 2010 at 03:32 PM by DougL
Updated 13th January 2010 at 08:52 PM by DougL

I found a great comment in post post #10.

Very few details were given, but it caught my imagination.
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Build your own case

Posted 20th November 2009 at 08:52 PM by DougL

These are answers I need.

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Tube Voltage Regulator, Is it worth the effort

Posted 27th October 2009 at 10:31 PM by DougL
Updated 13th January 2010 at 08:53 PM by DougL

This thread has some good, solid information and very little bravado.

Special Mention to:
Allen Wright
Bas Horneman

For their interesting contributions.

IMHO, There are several ways to make an adequate Power supply. And several ways to totally botch the job.

In the 1980's, I was totally against using solid state in a tube preamp. However, this was more about not using low voltage devices in high voltage circuits than anything else.
Now that high voltage transistors are available this is not a major consideration.
My first tube amp is going to be a platform to play with some of the discussions.
I want to try unregulated and regulated power supplies. I will probably start out with unregulated choke input supplies.

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