CCS for tubes/valves: PCBs - diyAudio
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Old 27th January 2006, 05:30 PM   #1
SY is offline SY  United States
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Default CCS for tubes/valves: PCBs

Since there's been a lot of interest lately in constant-current sources/sinks for use in tube amps and preamps, a few of us have been working behind the scenes to design a set of boards suitable for a wide variety of uses. The format will be a break-apart set of six circuits, both NPN and PNP. The design is a cascode bipolar, similar to the circuits shown in Morgan Jones's "Valve Amplifiers" and discussed at length in several recent threads.

The hard work has been done by our own Pinkmouse. Mr. Jones was kind enough to make some suggestions. And I'm the poor shmoo who has actually laid out the money to get them made.

We'll be announcing the prices and availability shortly. The boards are scheduled to arrive here in mid-February.

disclaimer: I am strictly doing this non-profit. Any portion of the price coming to me will be donated in full to the forum.
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Old 27th January 2006, 05:44 PM   #2
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That's great! You can count me in for some.
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Old 27th January 2006, 05:54 PM   #3
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Old 27th January 2006, 06:50 PM   #4
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I am interested to!

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Old 27th January 2006, 08:22 PM   #5
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right place, right time !!
I'm interested too

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Old 27th January 2006, 09:29 PM   #6
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Old 27th January 2006, 09:50 PM   #7
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Put me down for some also.
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Old 27th January 2006, 10:31 PM   #8
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Those aren't the classic M. Jones circuit. One resistor morphed into an LED.
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Old 27th January 2006, 10:56 PM   #9
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Mr. Jones didn't object.

No-one will call the police if you stuff a resistor into that space instead of an LED.
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Old 28th January 2006, 12:36 AM   #10
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SY,

Ever think about doing your input board?
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