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Old 26th December 2007, 02:43 PM   #1
diya370 is offline diya370  United Kingdom
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Default 2kw water cooled amp

hi guys any ideas on this amp ? got a pair on ebay cheep. just thought the would be fun to play with ??????? 60 output devices should be fun
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Old 26th December 2007, 06:46 PM   #2
latala is offline latala  United Kingdom
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what are the output devices ?
regards Trev
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Old 26th December 2007, 07:06 PM   #3
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This company made something similar about 35 years ago.
http://www.mbdynamics.com/index.php
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Old 26th December 2007, 07:06 PM   #4
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Looks like the pass bank for an old argon laser. If so, the devices would be fairly high voltage.
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Old 26th December 2007, 09:51 PM   #5
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definitely a gas laser pass bank. You can be sure that
all the devices are npn transistors and they are rated
for 400 to 500 volts. Total current thru the pass bank
in the range of 35 to 50 amps continuous.
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Old 26th December 2007, 11:18 PM   #6
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I don't see any heat sink there.

Was it just removed for the shot?

John C.
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Old 26th December 2007, 11:53 PM   #7
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Default heat sink

Quote:
Originally posted by Hotsauce
I don't see any heat sink there.

Was it just removed for the shot?

John C.

The heat sink is the copper bar the trannies are attched to, with the copper tubing carying the water attached underneath...duh

John L.
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Old 27th December 2007, 10:22 AM   #8
diya370 is offline diya370  United Kingdom
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Default no it isnt from an argon laser

its not from an argon laser psu . if it was why would it have v+ and v_ supply rails? all the argon power supplys i have seen (and i work on lasers every day) have only had single ended supply voltages of around 100 to 130 volts at around 35 amps.
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Old 27th December 2007, 01:21 PM   #9
AndrewT is offline AndrewT  Scotland
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makes a good start for a quasi complementary ClassA stage.

Are one on each bank a driver, controlling the remainder of the bank?
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Old 27th December 2007, 07:46 PM   #10
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If not from an argon laser, maybe from soething nasty like a shaker table. Nice find , anyway. Are all the devices the same sex? Any discernable part numbers, or are they house numbered parts?
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