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Old 10th December 2007, 03:35 PM   #1
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Default Zen transformer rating!!

Have a source for 18VAC CT (9-0-9) @ 2amp trans . I plan to use these to power a V4 Zen . What rating can I attribute to a pair of these with secondaries wired in series?? Is it still a 2amp setup?? Any problems with 2 of these setups paralleled?? I should know but for some reason can't be sure!! Please set me straight!!
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Old 10th December 2007, 06:03 PM   #2
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This is a transformer with a 36 VA rating. For a single channel
of Z4 you will need a minimum of 150 VA rating. This would
correspond to a secondary with 36 VAC at 4 to 5 amps.

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Old 10th December 2007, 09:00 PM   #3
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Quote:
Originally posted by Nelson Pass
This is a transformer with a 36 VA rating. For a single channel
of Z4 you will need a minimum of 150 VA rating. This would
correspond to a secondary with 36 VAC at 4 to 5 amps.


Thank you for your reply.It would appear that two of these units with secondaries wired in series, paralleled with another like pair would handle one channel . This certainly is a makeshift setup but will allow me to try one of these circuits which have been on my mind since 1994.The trannies in question are less than $5 a piece surplus. I recall that others have used this arrangement with apparent success.
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Old 11th December 2007, 12:54 PM   #4
MikeW is offline MikeW  United States
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Buy a bigger transformer. You would be better off with 300 VA per channel.
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Old 11th December 2007, 01:22 PM   #5
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You could squeeze one channel of Z4 from three of your $5 trannies to satisfy your curiosity, but remember the DIY adage: Build nice or build twice!

My guess is you don't have these xformers yet, but when you pick them up, you can see if they heat up or buzz by simulating the load with a power resistor. But you're better off finding a nice fat transformer. Why not call Steve at Apex Jr and see if he has something unlisted on the website? And keep your eyes on the trading post.
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Old 11th December 2007, 06:18 PM   #6
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Quote:
Originally posted by Tosh
You could squeeze one channel of Z4 from three of your $5 trannies to satisfy your curiosity, but remember the DIY adage: Build nice or build twice!

My guess is you don't have these xformers yet, but when you pick them up, you can see if they heat up or buzz by simulating the load with a power resistor. But you're better off finding a nice fat transformer. Why not call Steve at Apex Jr and see if he has something unlisted on the website? And keep your eyes on the trading post.
Of course you all have set me straight. 'Nice or twice' is a fact of life . Retirement has made a cheapskate out of a spender ...allways seeking
a cheaper solution.

Everything else is here including a bunch of IRF040's that i bought years ago. Why cheapen the scenario!!

Plitron here I come !!!

I would add that I have read everything Mr.Pass has written from the first article on and would like to thank him for what amounts to a very fine education . He has that special teaching talent that is largely missing in most schools.

Thank you and happy holidays.
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Old 11th December 2007, 08:26 PM   #7
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Quote:
Originally posted by sandstorm33
I would add that I have read everything Mr.Pass has written from the first article on and would like to thank him for what amounts to a very fine education.
I just like to answer the questions I had when I was starting out.

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Old 12th December 2007, 11:54 AM   #8
Magura is offline Magura  Denmark
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Quote:
Originally posted by Nelson Pass


I just like to answer the questions I had when I was starting out.


And that is much appreciated!


Magura
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Old 12th December 2007, 12:23 PM   #9
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Quite a relief that P-Man had questions.

(imagine what it would have been like for us numb-skulls if he had not)
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Old 12th December 2007, 01:47 PM   #10
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Magura



And that is much appreciated!


Magura

Quote:
Originally posted by jacco vermeulen
Quite a relief that P-Man had questions.

(imagine what it would have been like for us numb-skulls if he had not)

even Papa wasn't always Papa



but - what he obviously was always is - greedy for fun..........
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