Many put complex stuff on signal input to have loading options. I could understand if in commercial, catering for the unknown. In diy I would avoid contacts and distances at the signal's most delicate. I.e. when exits shielded and goes to first gate. A bulk foil trimmer could do it all. For capacitors I personally would not bother at all.
Tanks Salas and Ricardo
Fair point and much on my line of thinking dip switches and extra signal pats are bad especialy at such low levels.
Thing is there is not a real standard for cartridges outputs and loading and same time manufacturer reccomandation may not be ideal.
So I will try to get te thing set up with the possibility to take the Dip switch out of the signal pat and solder the best sounding combination on the imput pins once I have found it, + Elite today and tomorow? may be sometink else.
Fair point and much on my line of thinking dip switches and extra signal pats are bad especialy at such low levels.
Thing is there is not a real standard for cartridges outputs and loading and same time manufacturer reccomandation may not be ideal.
So I will try to get te thing set up with the possibility to take the Dip switch out of the signal pat and solder the best sounding combination on the imput pins once I have found it, + Elite today and tomorow? may be sometink else.
One step forward 2 back
Got a batch of CIF boards from Farnell and .....Crap photosensitive layer living bad stracks and acid working its way troug.
So still shopping for parts
Found very nice post about resistor noise on the part forum
Quote
Originally Posted by Ron AKA
Have a look at the test circuitry, and test results in this paper, and in particular the Vishay S102K.
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
The author Frank Seifert is a research engineer working on the development of a quantum-noise limited power stabilization for a high-precision laser system.
End quote
worth a look IMO sorry if out of topic
Got a batch of CIF boards from Farnell and .....Crap photosensitive layer living bad stracks and acid working its way troug.
So still shopping for parts
Found very nice post about resistor noise on the part forum
Quote
Originally Posted by Ron AKA
Have a look at the test circuitry, and test results in this paper, and in particular the Vishay S102K.
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
The author Frank Seifert is a research engineer working on the development of a quantum-noise limited power stabilization for a high-precision laser system.
End quote
worth a look IMO sorry if out of topic
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The Reflektor went even less parts meantime. After Ricardo's subjective experiments and some suggestions by me it looks that its 1000uF ref filter can work in nice tone without its PP Cap + small R bypass, if the output cap will go 0.47u and every stopper resistor be 120R. So make it like this if you will ever add such regs, which I highly recommend. I have read the resistors current noise article BTW.
Attachments
Sure. From this link below, the Reflektor idea begun. Then on there are the tryout posts amongst some general ones for the other types.
From post#4471 there, you can read what OT moved from here.
http://www.diyaudio.com/forums/powe...-voltage-shunt-regulator-429.html#post2724088
From post#4471 there, you can read what OT moved from here.
http://www.diyaudio.com/forums/powe...-voltage-shunt-regulator-429.html#post2724088
Tanks Salas
Going to order a few tomorow.
I can get Multycomp current gain 100
Or On semy current gain 200 (2N4403G)
Do the transistors need matching?
And how?
Ops Sorry just realised this should be on the Power suply forum.
Maybe for continuity sake may be worth moving the SCH there?
Going to order a few tomorow.
I can get Multycomp current gain 100
Or On semy current gain 200 (2N4403G)
Do the transistors need matching?
And how?
Ops Sorry just realised this should be on the Power suply forum.
Maybe for continuity sake may be worth moving the SCH there?
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Your 24V recommended after voicing tweaks schematic is already here on post #6926
OK found most probably the beghining of it http://www.diyaudio.com/forums/powe...w-voltage-shunt-regulator-86.html#post2724088
Tanks Salas
Tanks Salas
troubleshooting one channel
I got my salas riaa built but it is not working. I am using the Salas 1.1 bib as the regulator and I am measuring 25.1 volts. I am trying to build the Salas Simplistic NJFET Riaa Version 1.0 PDF(MM or MC High version) not the most current PDF version 11.02.F0
The leds are powered on but I am getting no sound or hum on one channel. My other channel isn't working either and is in worse shape.
From reading some of the thread there is mention of measuring the drain to ground voltage so I think I measured these correctly.
Q6 - 24.9 volts
Q3 collector - 15.65 volts
Q1 drain - 7.16 volts
Q2 drain - .961 volts
Q5 drain - .443 volts
Compared to recent PDF
Q6 is Q5
Q3 is Q4
Q5 is Q3
Any help is appreciated.
Kerux
I got my salas riaa built but it is not working. I am using the Salas 1.1 bib as the regulator and I am measuring 25.1 volts. I am trying to build the Salas Simplistic NJFET Riaa Version 1.0 PDF(MM or MC High version) not the most current PDF version 11.02.F0
The leds are powered on but I am getting no sound or hum on one channel. My other channel isn't working either and is in worse shape.
From reading some of the thread there is mention of measuring the drain to ground voltage so I think I measured these correctly.
Q6 - 24.9 volts
Q3 collector - 15.65 volts
Q1 drain - 7.16 volts
Q2 drain - .961 volts
Q5 drain - .443 volts
Compared to recent PDF
Q6 is Q5
Q3 is Q4
Q5 is Q3
Any help is appreciated.
Kerux