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Old 23rd August 2002, 05:53 PM   #1
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Default Zen Variations part 4

The Zen variations part 4 is finished and will be available
next week. Most Probably.

The production boards are better than the prototype, and
we are very pleased at the results.

Meanwhile, for those of you carving metal in anticipation,
here is a picture and dimensioning of the PC board. It
contains everything for one channel except the unrequlated
power supply at 50 volts @ 2 amps per channel. The
amplifier is designed to draw 100 watts per channel, but can
also easily be set up to draw 67 watts.

Accordingly we will be recommending 300 VA of transformer
per channel (36 V @ 8 amps) and .25 deg C/watt per channel
heat sinking.

www.passlabs.com/temp/z4pcbtop.tif

www.passlabs.com/temp/z4pcbmech.tif
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Old 23rd August 2002, 06:45 PM   #2
fcel is offline fcel  United States
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So, only Q1, Q2 & Q5 needs to be on the ("big") heatsink?
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Old 23rd August 2002, 07:13 PM   #3
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Wink The Zen variations part 4 trailer

The PCB before the schematic heh....... Could that be a ZVP3310 source follower on the input? Tune in next week for the exciting conclusion!

H.H.
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Old 23rd August 2002, 07:25 PM   #4
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fcel - Yes, Q1, Q2, and Q5 only need the heat sink.

H.H.- same bat time, same bat channel. KaPowee!!
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Old 23rd August 2002, 07:34 PM   #5
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Talking Batman

Don't you mean dadadadada..... Passman!

P.S. I just noticed that was my 1001 post! That alone sould put me in the Sin Bin..........
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Old 23rd August 2002, 10:30 PM   #6
skaara is offline skaara  Slovenia
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Is zen v.4 SuSy circuit?
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Old 23rd August 2002, 10:36 PM   #7
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No. SuSy is for desert. Later. Much Later.
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Old 23rd August 2002, 10:56 PM   #8
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Location: Adelaide, Australia
Default Re: Batman

Quote:
Originally posted by HarryHaller
Don't you mean dadadadada..... Passman!
Now we have identified the Bat .... we just need to locate the Riddler, the Joker, the Penguin and King Tut
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Old 24th August 2002, 12:23 AM   #9
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67 watts--meaning that the 250VA-transformer
of 24V @ 5 Amps still useful? Expecting so.

... Nice weekend!
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Old 25th August 2002, 06:23 PM   #10
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Can I use only one "big" transformer (600 VA; 2 x 35 V) for left and right channel or is it better to use two separat transformer.
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