Mystery Component

johnmarkp · 18th May 2009, 04:05 PM

This is from a tube based power supply and feeds the cathode of a 6H30 from the positive rail. It says 583 KS on it. Is it a 58v zener?

John

AndrewT · 18th May 2009, 04:18 PM

are you referring to the device with the translucent case?

What voltage is across it?

johnmarkp · 18th May 2009, 05:45 PM

Sorry, for the confusion. Yes it is the translucent device. I was not able to measure the voltage across it.

John

analog_sa · 18th May 2009, 07:08 PM

More details? Or at least a larger pic? Is it an ARC component?

johnmarkp · 18th May 2009, 09:45 PM

Yes this a Ref 3. I got a chance to take a careful look at a friends and want to see if I can clone it. I'll see if I can put up a better picture.

John

analog_sa · 18th May 2009, 09:54 PM

It's about the only ARC pre worth cloning IMO. A very quick preliminary question

what does it use for volume?

Tube_Dude · 19th May 2009, 04:40 AM

Quote:

Originally posted by johnmarkp
This is from a tube based power supply and feeds the cathode of a 6H30 from the positive rail. It says 583 KS on it. Is it a 58v zener?

John

Its a 58 nF polystyrene capacitor...

johnmarkp · 19th May 2009, 12:44 PM

Tube Dude, thanks. I just did not think of polystyrene as a possibility. Do I need to use a polystyrene there? Or can I use something else?

The volume is controlled by chip resistors just like all ARC's over the last couple of years.

Tube_Dude · 19th May 2009, 12:55 PM

Quote:

Originally posted by johnmarkp
Tube Dude, thanks. I just did not think it of polystyrene. Do I need to use a polystyrene there? Or can I use something else?

Is better to stay with polystyrene, because de low losses and precision.

http://www.jaycar.com.au/images_uploaded/rescode.pdf

Tube_Dude · 19th May 2009, 01:15 PM

Why you think the capacitor is to blame?

They usually stand for a life time...

18th May 2009, 04:18 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	are you referring to the device with the translucent case? What voltage is across it? __________________ regards Andrew T.

19th May 2009, 01:15 PM	#10
Tube_Dude diyAudio Member Join Date: Mar 2002 Location: Aveiro-Portugal	Why you think the capacitor is to blame? They usually stand for a life time... __________________ Jorge

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Mystery RF amp	spooney	Car Audio	11	25th April 2008 06:14 PM
Oscilloscope mystery	herrdahlin	Parts	6	6th January 2008 04:23 PM
little 6.5 mystery ...	oface	Full Range	6	4th November 2007 11:20 PM
Mystery SE OPT	alexmoose	Tubes / Valves	4	11th July 2006 01:29 AM
mystery...	mista2	Multi-Way	1	14th January 2005 04:20 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th May 2009, 05:45 PM	#3
johnmarkp diyAudio Member Join Date: Apr 2004 Location: Wisconsin	Sorry, for the confusion. Yes it is the translucent device. I was not able to measure the voltage across it. John

18th May 2009, 07:08 PM	#4
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	More details? Or at least a larger pic? Is it an ARC component?

18th May 2009, 09:45 PM	#5
johnmarkp diyAudio Member Join Date: Apr 2004 Location: Wisconsin	Yes this a Ref 3. I got a chance to take a careful look at a friends and want to see if I can clone it. I'll see if I can put up a better picture. John

18th May 2009, 09:54 PM	#6
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	It's about the only ARC pre worth cloning IMO. A very quick preliminary question what does it use for volume?

19th May 2009, 12:44 PM	#8
johnmarkp diyAudio Member Join Date: Apr 2004 Location: Wisconsin	Tube Dude, thanks. I just did not think of polystyrene as a possibility. Do I need to use a polystyrene there? Or can I use something else? The volume is controlled by chip resistors just like all ARC's over the last couple of years.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)