| A test circiut..... - Click HERE for Original Thread |
| coffin |
A modification from bride of ZEN and Power Follower 99c.....
Can anybody tell me does it work?
I want to take output cap off.
I add DC-servo.
Thanks!:D
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| eLarson |
I tried both links, but neither worked for me.
(Unavailable and "Forbidden" respectively.)
What is a Power Follower 99c? Whose design is it?
Erik |
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| Henrik |
Andrea Ciuffoli´s powerfollower is a very fine circiut. I have build two of them.
I believe Your circiut will work, but I am pretty shure that it wount beat the original design. Take a look, and read his text carefully over and over again, it is more sufisticated than the most, specially his consideration on the relation between the singlerailed powersupply, the outpucap and the grounding, all this is gone in Your scematic.
:) |
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| Mark A. Gulbrandsen |
The power followers were the first class A things that I had built, but they were too low of power for my Dynaudios. Went on to build a pair of Aleph 2's which are almost finished now. The power follower does sound good though.....
Mark |
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| Henrik |
| I don´t get any pictures from that link! |
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| Henrik |
I am just getting this message:
"You don't have permission to access /coffin1967/ab2/p1.gif on this server." |
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| coffin |
[QUOTE]Originally posted by Henrik
I am just getting this message:
"You don't have permission to access /coffin1967/ab2/p1.gif on this server." [/QUOTE
Try this again.....
http://photo.pchome.com.tw/s01/coffin1967/book1/
Sorrrrrrrrry |
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| Henrik |
| Still no picture, I can se it should be there, but it ain´t. |
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| Henrik |
My fault, it was my firewall´s cookiecontrole wich denied the use of cookies this way.
But that should not be nessesary to go to this extreme use of cookies, show your picture elswhere. |
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| coffin |
| quote: | Originally posted by jh6you
This?
JH |
YES:att'n: :att'n: :att'n:
Thanks!!!:D :D :D |
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| Nelson Pass |
I haven't analyzed it carefully, but it looks like the
designer is smart enough, and it will probably work. |
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| AMT-freak |
OPA637 in a DC servo?
Did you get them as samples and don't know what to do with them? :)
I'd try something way cheaper since low THD and high speed is not what you need here... |
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| coffin |
| quote: | Originally posted by AMT-freak
OPA637 in a DC servo?
Did you get them as samples and don't know what to do with them? :)
I'd try something way cheaper since low THD and high speed is not what you need here... |
Hi
I won't use OPA637 on test ckt.
Maybe OP27/OPA132 or something much cheaper....
Thanks
:D |
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| coffin |
It works!
Just add a resistor at the base of Servo BJT to gnd.
Only left some huss and hum problem to fix......
Coffin:nod: :nod: :nod: |
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