Border Patrol PSU, can anyone help?

aksolanki · 5th September 2007, 08:46 PM

Hello, I have an Audionote Oto amp to which I would like to add a Border Patrol type PSU.

Can anyone help with a schematic, or share any experiences of thier own builds.

I won't kid myself and consider myslef in the same league as most of the builders here, but I feel I could handle a PSU project, as always lack of funds are a driving force hence the DIY project.

As always any opinion would be greatly apprceciated.

Kind regards,

Anil K Solanki

Lugo Italy.

ste · 6th September 2007, 09:10 AM

Try here for some relevant discussion:
http://www.pinkfishmedia.net/forum/s...ead.php?t=8272

Steve

mach1 · 6th September 2007, 11:35 PM

Border Patrol use an LC choke input power supply (ie a choke is the first element used after the rectifiers). There is plenty of information on this topology available on the web. Well worth the effort IMHO.

Download Duncanamps PSUD2 and do some simulations before you build. The exercise will be very instructive.

aksolanki · 10th September 2007, 06:37 AM

Thank you both for taking the time to reply to my question.

Many thanks.

Anil.

luvdunhill · 11th September 2007, 04:52 PM

thanks for the link! I have played around with PSUD2 some, but now I'm ready to build! Any recommendations on how to build a dummy load that will let me test things out before hooking it up to my amplifier? I'd like to simulate two or three different load currents. Also, is there a easy way to measure (and graph) the voltage and current over time to make sure that my amplifier doesn't get a suddent surge in either? The reason I ask is my simulations in PSUD2 show a huge spike in voltage at turn on, and I'm not sure if my circuit is considered "soft-start" or not.

Thanks!

schiller · 15th September 2007, 04:52 PM

Hi, the huge spike exists really, you can make it smaller adding some series resistance after the transformer primary, which after a few sec. can be shorted with a 555-relay combi.

Get a choke wound for choke input (big! high AC voltage across it, not only DC as in cap input). Don't let anyone sell you a swinging choke, current consumption is constant,
this is a SE, not a class B amp.
Greetings
Konstantinos

5th September 2007, 08:46 PM	#1
aksolanki diyAudio Member Join Date: Jun 2006	Border Patrol PSU, can anyone help? Hello, I have an Audionote Oto amp to which I would like to add a Border Patrol type PSU. Can anyone help with a schematic, or share any experiences of thier own builds. I won't kid myself and consider myslef in the same league as most of the builders here, but I feel I could handle a PSU project, as always lack of funds are a driving force hence the DIY project. As always any opinion would be greatly apprceciated. Kind regards, Anil K Solanki Lugo Italy.

6th September 2007, 11:35 PM	#3
mach1 diyAudio Member Join Date: Sep 2004 Location: Brisvegas	Border Patrol use an LC choke input power supply (ie a choke is the first element used after the rectifiers). There is plenty of information on this topology available on the web. Well worth the effort IMHO. Download Duncanamps PSUD2 and do some simulations before you build. The exercise will be very instructive. __________________ Au rutti wop-bop-a-loom-bop-a-boom-bam-boom - Richard Penniman

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6th September 2007, 09:10 AM	#2
ste diyAudio Member Join Date: Sep 2001	Try here for some relevant discussion: http://www.pinkfishmedia.net/forum/s...ead.php?t=8272 Steve

10th September 2007, 06:37 AM	#4
aksolanki diyAudio Member Join Date: Jun 2006	Thank you both for taking the time to reply to my question. Many thanks. Anil.

11th September 2007, 04:52 PM	#5
luvdunhill diyAudio Member Join Date: Jul 2006	thanks for the link! I have played around with PSUD2 some, but now I'm ready to build! Any recommendations on how to build a dummy load that will let me test things out before hooking it up to my amplifier? I'd like to simulate two or three different load currents. Also, is there a easy way to measure (and graph) the voltage and current over time to make sure that my amplifier doesn't get a suddent surge in either? The reason I ask is my simulations in PSUD2 show a huge spike in voltage at turn on, and I'm not sure if my circuit is considered "soft-start" or not. Thanks!

15th September 2007, 04:52 PM	#6
schiller diyAudio Member Join Date: Jan 2005 Location: Athens	Hi, the huge spike exists really, you can make it smaller adding some series resistance after the transformer primary, which after a few sec. can be shorted with a 555-relay combi. Get a choke wound for choke input (big! high AC voltage across it, not only DC as in cap input). Don't let anyone sell you a swinging choke, current consumption is constant, this is a SE, not a class B amp. Greetings Konstantinos

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