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Cd Pro power supply
Cd Pro power supply
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Old 13th February 2004, 05:02 AM   #1
CHS is offline CHS  Taiwan
diyAudio Member
Join Date: Feb 2004
Location: taiwan
Default Cd Pro power supply

Hi Guys,
I've built the simple power supply
for the Cd Pro using the R method
for the display panel. Voltage checks
out correctly but when connected up
it dosen't light-up. Connection are
all corrrect. Did I miss something ?
I'm using two 5W parallel 330 ohms
drop resistors. Voltage at Vkk is 22 volts

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Old 14th February 2004, 01:37 PM   #2
Peter K is offline Peter K  Netherlands
diyAudio Member
Join Date: Apr 2003
Location: Vlaardingen
Wink Re: Cd Pro power supply

Originally posted by CHS
Voltage at Vkk is 22 volts
The VKK psu has to be negative, all info you need is on the Daisy webpages http://www.daisy-laser.nl/homeoptics/page20.html
Or search the forum, you will find a lot of info regarding this problem. (http://www.diyaudio.com/forums/showt...207#post218207)

Good luck

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Old 16th February 2004, 08:40 AM   #3
CHS is offline CHS  Taiwan
diyAudio Member
Join Date: Feb 2004
Location: taiwan
Hi Peter,
Thanks for your advice.
Sorry the voltage is -VKK
Will tie the ground to pcb
& see if it works.
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