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Old 31st March 2009, 01:42 AM   #1
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Default Arc Vt-60 Cloned :-)

I will receive PCB from my group buy of ARC VT-60 SE but I can't find where's a source of LM329 IC's ?

Schematic included 3*6DJ8, 4*6550 and I decide to use Hammond 1650P, too
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Old 31st March 2009, 01:50 AM   #2
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Default Our PCBs

Plate through hole double layer with SILVER PLATED and 2 times of FR4 and CRYO TREATED
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Old 31st March 2009, 02:29 AM   #3
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Default Re: Arc Vt-60 Cloned :-)

Quote:
Originally posted by ANADIGIT
I will receive PCB from my group buy of ARC VT-60 SE but I can't find where's a source of LM329 IC's ?

Schematic included 3*6DJ8, 4*6550 and I decide to use Hammond 1650P, too
Digikey has some:
http://search.digikey.com/scripts/Dk...ame=LM329DZ-ND

You might also get by with a couple of 6.9V Zeners.
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Old 31st March 2009, 03:37 AM   #4
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Default comparing ?

Does 6.9V zener diode better than LM329 ?
How are noise and regulation ?

Does anyone know about brand name of filter capacitor (470uF and 100uF) ?

Thanks
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Old 31st March 2009, 08:20 AM   #5
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Hi Anadigit

Thanks for publishing the circuit. Taking into account the high signal level circuits the regulator is powering, there should be no real degradation using a zener. The 470uF and the low voltage electrolytics are Nichicon, the 100uF probably Chemicon.
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Old 31st March 2009, 08:48 AM   #6
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May i ask you where did you get the VT-60 pcb's. Where is the group buy?

Regards,
Boris
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Old 31st March 2009, 10:27 AM   #7
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Is that circuit correct? There's one or two things that don't look right.

Cryotreating a circuit board (besides being useless) can reduce reliability. NOT a good idea.
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Old 31st March 2009, 10:32 AM   #8
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Default Cryo ?

Hi, SY
Why don't you think CRYO not good for audio ?
I seen there're many website used this method to improve their goods.

This circuit came out from service manual but I think there're many revision of them.

Thanks
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Old 31st March 2009, 10:36 AM   #9
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It is not a good process for circuit boards (will hasten delamination). I have serious reservations about reliability considerations for other components (especially tubes).

Was the circuit redrawn from the manual? If so, that could explain the errors.
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Old 31st March 2009, 10:42 AM   #10
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Default Example

Cryo used for make everything reliable such as COPPER when you treated your interconnect it will be smooth and easy to solder because its molecule will recontruction.

BTW this method can made your money lost but it can make me happy.

What's wrong in schematic ?
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