hey guys,
i've got my eyes on a DIY project which requires to be powered by a dual rail PSU.
Just wondering if it is possible to buy a wall wart, or similar externnal PSU, affordably with dual rails...i see computer PSU's can come with dual rails, but not so sure it's suitable for this purpose.
- It is currently Fri Apr 19, 2024 2:05 pm • All times are UTC + 10 hours [ DST ]
15 V dual rail psu
Moderators: rick, Mark Bassett
8 posts
• Page 1 of 1
15 V dual rail psu
Jamil Khuri
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
- jkhuri44
- Forum Veteran
- Posts: 2537
- Joined: Wed Sep 20, 2006 10:53 pm
- Location: Dundas
Re: 15 V dual rail psu
I'm not aware of any dual rail wall wart PSUs, but Jaycar have a range of dual rail PSUs in various voltages and power ranges that would, no doubt, do the job.
Bob Charman - Stockport Sound, SA
The Road Goes On Forever and the Party Never Ends..........
The Road Goes On Forever and the Party Never Ends..........
-
stosostu - Regular Contributor
- Posts: 458
- Joined: Fri Jul 23, 2010 3:17 pm
- Location: Clare and Gilbert Valleys, South Australia
Re: 15 V dual rail psu
Hi Bob,
All i could find was this:
http://www.jaycar.com.au/powertech-swit ... t/p/MP3180
is a switch mode psu actually suitable for audio applications?
All i could find was this:
http://www.jaycar.com.au/powertech-swit ... t/p/MP3180
is a switch mode psu actually suitable for audio applications?
Jamil Khuri
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
- jkhuri44
- Forum Veteran
- Posts: 2537
- Joined: Wed Sep 20, 2006 10:53 pm
- Location: Dundas
Re: 15 V dual rail psu
Check out Joe Malone's range at http://www.jlmaudio.com/shop/power-supply-kits.html
Top of the list you'll find a +/-16V supply that also provides a 48V for phantom power. There are a range of other supply kits to suit almost every need.
Bear in mind that without a centre tapped transformer, making a +/- supply from a wall wart provides a reference ground rather than an earth. Suppose you get a 24V DC wall wart - a couple of 100K resistors and 12V zener diodes are all you need to create a half volts supply rail, add in some bypass caps as needed. Call this half volts rail 0V and then the wall wart positive is +12V and the wall wart negative is -12V. Lo and behold, dual supply!
The danger is forgetting that the 0V in this arrangement is actually at 12V to the rest of the world - it is NOT earthed - so you do NOT connect it to your case, for example, and you need to have a transformer or other scheme to send any signal out into the real world.
Top of the list you'll find a +/-16V supply that also provides a 48V for phantom power. There are a range of other supply kits to suit almost every need.
Bear in mind that without a centre tapped transformer, making a +/- supply from a wall wart provides a reference ground rather than an earth. Suppose you get a 24V DC wall wart - a couple of 100K resistors and 12V zener diodes are all you need to create a half volts supply rail, add in some bypass caps as needed. Call this half volts rail 0V and then the wall wart positive is +12V and the wall wart negative is -12V. Lo and behold, dual supply!
The danger is forgetting that the 0V in this arrangement is actually at 12V to the rest of the world - it is NOT earthed - so you do NOT connect it to your case, for example, and you need to have a transformer or other scheme to send any signal out into the real world.
Chris Preston
The man who gives meaning to the word amateur
The man who gives meaning to the word amateur
-
chrisp - Registered User
- Posts: 162
- Joined: Wed Apr 08, 2015 7:55 pm
- Location: Sunny warm Canberra
Re: 15 V dual rail psu
thanks for chiming in chris and bob chris, i just noticed ur in canberra now?
so, basically, a ready made dual rail psu siutable for audio doesnt exist im gathering...
so, basically, a ready made dual rail psu siutable for audio doesnt exist im gathering...
Jamil Khuri
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
- jkhuri44
- Forum Veteran
- Posts: 2537
- Joined: Wed Sep 20, 2006 10:53 pm
- Location: Dundas
Re: 15 V dual rail psu
Hey Jamil
Yeah, moved to CBR 3 years ago - still listen to Mandala every now and then.
The JLM unit at the link I posted is ready made.
Yeah, moved to CBR 3 years ago - still listen to Mandala every now and then.
The JLM unit at the link I posted is ready made.
Chris Preston
The man who gives meaning to the word amateur
The man who gives meaning to the word amateur
-
chrisp - Registered User
- Posts: 162
- Joined: Wed Apr 08, 2015 7:55 pm
- Location: Sunny warm Canberra
Re: 15 V dual rail psu
ah sorry chris, i thought it was a kit to build.
cool thanks again
cool thanks again
Jamil Khuri
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
Amusement & Audio Engineer
"it's not awesome unless its 240bpm with distorted 909 kicks!"
- jkhuri44
- Forum Veteran
- Posts: 2537
- Joined: Wed Sep 20, 2006 10:53 pm
- Location: Dundas
Re: 15 V dual rail psu
jkhuri44 wrote:thanks for chiming in chris and bob chris, i just noticed ur in canberra now?
so, basically, a ready made dual rail psu siutable for audio doesnt exist im gathering...
From memory JLM audio has some great dual rail PS kit PCB's and even transformers. Check Joe's website
http://www.jlmaudio.com/shop/power-supply-kits.html
cheers
Terry Demol
T & L Technical P/L
Audio Design & Service
T & L Technical P/L
Audio Design & Service
- zenelectro
- Registered User
- Posts: 59
- Joined: Mon Jul 19, 2010 1:38 am
- Location: Sydney
8 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 5 guests