Bench Phono

Post by **Nick** » Mon Dec 01, 2008 9:42 pm

In fact thats a c4s (Camile Cascade Constant Current Source)

richardcooper2k · Post by **richardcooper2k** » Tue Dec 02, 2008 12:36 am

oh, a constant current load is the same as a constant current source, yes i'm familiar with that term but havn't quite grokked them yet

funnily enough it is izzy wizzys site and Will that got me interested in moving away from active devices and more towards passive chokes and trasformer coupling. i like the relaxed yet dynamic sound they seem to get/describe

i've still got separate valve regulated supplies for the phono and line stages but i'm in the process of finding out what difference it makes to put some passive filtering between the regs and signal circuits. so far i like it (though that may be as much to do with decoupling in the HT between stages). awaiting some more bits before i can take it further

maybe when i've finished the transformer section in morgan jones i'll be able to work out the output impedance of my line stage

Mike H · Post by **Mike H** » Tue Dec 02, 2008 5:16 pm

Nick wrote:In fact thats a c4s (Camile Cascade Constant Current Source)

Is it by Jove?

Post by **Nick** » Tue Dec 02, 2008 5:27 pm

http://www.pacifier.com/~gpimm/56%20C4S%20preamp.gif

richardcooper2k · Post by **richardcooper2k** » Wed Dec 03, 2008 1:11 am

hang on are we talking about V2 5965 or the 2 transistors and LEDs network ?

Post by **Nick** » Wed Dec 03, 2008 1:39 am

I was talking about the transistors creating a CCS load for the output stage.

Mike H · Post by **Mike H** » Wed Dec 03, 2008 6:54 pm

And I was talking about V2

Post by **Nick** » Wed Dec 03, 2008 8:47 pm

Mike H wrote:And I was talking about V2

Isnt that the top half of a mu follower?

richardcooper2k · Post by **richardcooper2k** » Wed Dec 03, 2008 9:07 pm

Nick wrote:
Mike H wrote:And I was talking about V2
Isnt that the top half of a mu follower?

there's something in the circuit following cows ? does having cows in the circuit improve the frequency response ? can you tell that trying to match what i am writing in this job application form to the person specification has done something to my bwain ?

Dave the bass · Post by **Dave the bass** » Wed Dec 03, 2008 10:13 pm

richardcooper2k wrote:
does having cows in the circuit improve the frequency response ? ?

Not so much at the high frequencies but at the udder-end it's a different story.... (see what I did there?)

DTB

richardcooper2k · Post by **richardcooper2k** » Wed Dec 03, 2008 11:00 pm

oh thats grotty

Post by **Nick** » Wed Dec 03, 2008 11:33 pm

Arrgh, my head is going to explode....

richardcooper2k · Post by **richardcooper2k** » Wed Dec 03, 2008 11:36 pm

probably mad cow disease.......

pre65 · Post by **pre65** » Thu Dec 04, 2008 9:12 am

richardcooper2k wrote:probably mad cow disease.......

Probably maid cow disease for DTB !

or as in Little Britain, "I'm a Laydee"

Mike H · Post by **Mike H** » Thu Dec 04, 2008 1:32 pm

How much longer can we milk this joke

Okay leaving moo follower aside, cathode resistor and maybe a bit of something as a grid stopper and you've got a current source

audio-talk

Bench Phono

#46

#47

#48

#49

#50

#51

#52

#53

#54

#55

#56

#57

#58

#59

#60