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Old 24th January 2009, 09:40 AM   #1
eeyore is offline eeyore  Australia
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Default CCS Kit options

In the market to buy a CCS kit for a SE front end. I have two choices, the K and K Audio Cascode Current Source Kit and the DIY Hifisupply CCS kit.

The KandK is based on cascodes depletion Mosfet, whilst the DIY HFS is based on the 10M45S.

Can anyone comment which performs better in terms of output noise and stability?
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Old 24th January 2009, 10:23 AM   #2
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Why not save $ and roll your own discrete one?

Cheers!
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Old 24th January 2009, 11:33 AM   #3
SY is offline SY  United States
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Geek is right on. An excellent CCS is about two transistors and three resistors. Why buy a kit? This is maybe, possibly, $4 worth of parts.
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Old 25th January 2009, 09:48 AM   #4
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http://www.classicvalve.ca/tubepcb.html

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Old 27th January 2009, 06:12 AM   #5
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You might also consider the Bottlehead load. A 2 transistor CCS is almost always a must!
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Old 27th January 2009, 08:12 AM   #6
JC951t is offline JC951t  Taiwan
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Hi SY,
Any nice schematics to share.

Thanks
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Old 27th January 2009, 09:36 AM   #7
Brit01 is offline Brit01  United Kingdom
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The link to Greggs page has some schematics:

http://www.classicvalve.ca/docs/CVD_...inary_docs.pdf
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Old 27th January 2009, 11:36 AM   #8
SY is offline SY  United States
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Quote:
Originally posted by JC951t
Hi SY,
Any nice schematics to share.

Thanks
Here's one from my phono amp. This particular one is set for 20mA, but that can be changed by adjusting the source resistor. There's a similar circuit in the ImPasse.
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Old 27th January 2009, 03:51 PM   #9
JC951t is offline JC951t  Taiwan
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Hi Brit 01,
Thanks for the link
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Old 27th January 2009, 03:53 PM   #10
JC951t is offline JC951t  Taiwan
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Hi SY,
Thanks. May I ask, how does it sound ?
Source resistor would that be R3 ?
Have you compare it to choke loading ?

Many thanks again
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