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03-20-2005, 07:10 PM
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#151
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Newbie
Join Date: Jan 2005
Posts: 50
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Quote: Originally Posted by nFiniteTuning
Any updates on this? I'm going 64bit on my XPCarputer and need a good psu to power her.
well this isn't it, I suggest you look elsewhere.
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03-22-2005, 07:44 AM
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#152
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FLAC
Join Date: Mar 2005
Location: Maine
Posts: 937
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Does anyone have a copy of the schematic and PCB layout from earlier in the thread? His site is totally not working for me. If anyone has them I'd really appreciate a copy at evandude AT gmail.com
I'm a EE so perhaps I can help a little with design if needed as well.
thanks
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03-22-2005, 01:07 PM
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#153
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MySQL Error
Join Date: Sep 2003
Location: Beach City, Socal
Posts: 4,038
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Last edited by MatrixPC; 03-22-2005 at 01:10 PM.
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03-22-2005, 01:43 PM
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#154
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FLAC
Join Date: Mar 2005
Location: Maine
Posts: 937
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Looks like the site just came back up. thanks for the help though
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03-22-2005, 02:52 PM
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#155
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Registered User
Join Date: Aug 2001
Location: India
Posts: 1,636
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Hello everyone looks like people are having problem with my site below is the new link
Mastero
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03-24-2005, 11:52 PM
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#156
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Newbie
Join Date: Jan 2004
Posts: 23
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Quote: Originally Posted by MatrixPC
If it click, the relay is working.
Check the left most pin (and 10k res) of the BD677 to see if it read 5V when power is hook up. If it read 5V, but no ground on the middle pin, more likely the BD577 is toast. To check for ground on middle pin, check for continueity between middel and right pin (cuz right pin is connect to ground.)
Basicaly this is how the circuit flow.
- When the SDC is on, 5V is coming out of 74HC14 pin6 and thru 10k resistor. That signal (pin3) is switch the BD677 transistor to connect pin 1 and 2 together to send ground from pin1 to pin2 (middle). That ground is then switch/turn on the relay. The relay connect and send 12V (batt level) to 5V StandBy regulator (LM1084).
- J1 when shorted, will bypass the SDC's BD677 switch and directly switch/turn on the relay.
i'm not getting the 5v
i'm getting ~2.3v into the 74hc14, and ~0.6V at the bd677
Last edited by me and me lude; 03-24-2005 at 11:58 PM.
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03-25-2005, 03:39 PM
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#157
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MySQL Error
Join Date: Sep 2003
Location: Beach City, Socal
Posts: 4,038
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Quote: Originally Posted by me and me lude
i'm not getting the 5v
i'm getting ~2.3v into the 74hc14, and ~0.6V at the bd677
Now I have no more clue of what going on. Except, if you get the right 74HC14. Maybe you can get that replace.
Another point is did you check the value of the POT? Look up Mastero site for how to set and what value to be set. I think the fomular is (time in second = capacitance in Farad x Resistance in ohm).
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03-27-2005, 07:07 AM
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#158
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Constant Bitrate
Join Date: Oct 1999
Location: London England
Posts: 120
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Quote: Originally Posted by rando
Oops, I didn't notice the latter part of your post. With the changes you posted, it makes sense now. Also, it seems like you might be able to ditch the relay in favor of a much smaller and cheaper switching transistor. Small, cheap, powerful and efficient ... it's going to get there!
Anyone got a circuit for the auto turn on feature based on a transistor instead of a relay?
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03-27-2005, 11:39 PM
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#159
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Maximum Bitrate
Join Date: Sep 2004
Location: Tijeras, NM
Posts: 697
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Quote: Originally Posted by nFiniteTuning
Any updates on this? I'm going 64bit on my XPCarputer and need a good psu to power her.
I stilll need a good 250W PSU for my carputer with auto startup and shutdown. I haven't gone 64bit yet and wont ever use an inverter. THE 64bit xpc dont require any more then 250w on the PSU. Cause they have the same psu as I do.
But how much, fully asembled, working, tested with proof sheets of it working properly, and shipped to 87059? You can email me at jagray85@gmail.com. This is the only thing I need except a screen to get my xpc in my car.
__________________
1987 Pontiac Fiero GT
XPCarputer Coming Soon
[IIIIIII---] 70% Complete
XPC Model SN41G2V2
AMD AthlonXP 1800+
2× Mushkin 256MB DDR
Pioneer DVDRW
80GB 7200RPM UltraATA HD
Windows XP MC2005
XM Satellite Radio
•ñFïnïtε Τחטіתģ•
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03-28-2005, 09:41 AM
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#160
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MySQL Error
Join Date: Sep 2003
Location: Beach City, Socal
Posts: 4,038
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Quote: Originally Posted by nFiniteTuning
I stilll need a good 250W PSU for my carputer with auto startup and shutdown. I haven't gone 64bit yet and wont ever use an inverter. THE 64bit xpc dont require any more then 250w on the PSU. Cause they have the same psu as I do.
But how much, fully asembled, working, tested with proof sheets of it working properly, and shipped to 87059? You can email me at jagray85@gmail.com. This is the only thing I need except a screen to get my xpc in my car.
This will never happen cuz this is a DIY project. Unless Mastero feel like it.
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03-28-2005, 03:28 PM
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#161
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Low Bitrate
Join Date: May 2004
Posts: 82
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I am kind of new to power supply, is the -5v and -12v really necessary for a P4 system?
as what i remembered, -5 v is NOT used in P4 and -12 v is only used in Serial Port.
can someone confirm this?
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03-29-2005, 04:14 PM
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#162
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Maximum Bitrate
Join Date: Sep 2004
Location: Tijeras, NM
Posts: 697
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Quote: Originally Posted by MatrixPC
This will never happen cuz this is a DIY project. Unless Mastero feel like it.
Well everyone I know who can make it, wont. And I really need a good 200-250wpsu
__________________
1987 Pontiac Fiero GT
XPCarputer Coming Soon
[IIIIIII---] 70% Complete
XPC Model SN41G2V2
AMD AthlonXP 1800+
2× Mushkin 256MB DDR
Pioneer DVDRW
80GB 7200RPM UltraATA HD
Windows XP MC2005
XM Satellite Radio
•ñFïnïtε Τחטіתģ•
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04-04-2005, 01:06 AM
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#163
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Low Bitrate
Join Date: Feb 2004
Location: Halifax
Posts: 60
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RE: 12+ Dual 5Amp Rail
Hello,
I have a question about the 12+ rails. Since they are 5amps each does that mean that i need to plug the 12+ wire from the ATX Power connector to both of the rails to get full power?..... or should i just plug the ATX into one and the hard drive and cdrom power connectors into the other.
Im going to be running a 2200+ sempron off of this power supply ... any help would be appreciated.
Im getting excited to try it out cause im getting pretty close to being finished. Only a one more night once i get my coils and im done ... 
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04-04-2005, 04:11 AM
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#164
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Newbie
Join Date: Apr 2005
Posts: 21
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Hi,
Can you please help me with a wiring diagram for your MK 4.5 PSU. I have almost finished making it with the help of your instructions.
Kindly let me know how to wire this up completly on both sides , i.e. Car Battery side and the Moherboard , Hard disk Side.
Thanks
Manik
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04-04-2005, 11:03 AM
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#165
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MySQL Error
Join Date: Sep 2003
Location: Beach City, Socal
Posts: 4,038
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Quote: Originally Posted by 047025n
Hello,
I have a question about the 12+ rails. Since they are 5amps each does that mean that i need to plug the 12+ wire from the ATX Power connector to both of the rails to get full power?..... or should i just plug the ATX into one and the hard drive and cdrom power connectors into the other.
Im going to be running a 2200+ sempron off of this power supply ... any help would be appreciated.
Im getting excited to try it out cause im getting pretty close to being finished. Only a one more night once i get my coils and im done ...
One for the mobo and one for the drive.
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