tiroth said:
For the main board "ONLY" not the output boards correct?
I would hate for someone to let out more smoke..
They are spec'd to 5A, I believe. I don't know how much you can realistically get out of a single regulator though in class A...the thermal demands are much higher.
"Use with caution" depending on your bias, perhaps. 😉
"Use with caution" depending on your bias, perhaps. 😉
Member
Joined 2002
That is true about the Digi Boards i have 4 set's too : O ) I wonder if they will handle the current though. Also would have to change some parts to get 15V rail's
Jason
Jason
I've been using an LM338 regulated power supply for a while now as a generic supply for various projects, with the output as high as +/-30V at 4 amps continuous, with occasional short demand spikes as high as 10A, so I don't see a problem with using them to regulate the whole amp supply. That being siad, I would err a bit on the side of caution, and separately regulate each channel. Also, don't forget to put a big schwack of capacitance after the regulator too.
Member
Joined 2002
I think ill use my regulator boards : O ) now to find the exact part to get the output after the regulator to 15V
You can throw a pot in there, tune it, and then just measure the values. Probably the easiest way.
Member
Joined 2002
Member
Joined 2002
jleaman said:
I have a design partially worked out with a power supply board, allowing for the option of regulation. I will post details of the setup when I have time. I will be back from my business trip on Saturday night, and I can talk to you then.
--
Brian
As I am relativly new to this game, can anyone please give me a short descpiption of balanced and unbalanced inputs and the pro's and con's .
Tony
Tony
APK said:
Tony-
Not to be rude, but ANY effort put into a search and a little light reading will answer that question.
That would be a good idea😉 Unless you design a regulated psu board to meet the specs and a bit more😉
Count me in for a few of these boards. My old chassis for Zen amps needs new stuffing😀
Steen.
Member
Joined 2002
Id love to see brian make a simple Regulated board WIth the psu board all in one. : O ) Also i was noted that we could use digi's boards for this too : O )
J'
J'
Short version, pro: Balanced input only amplifies the incomming signal, and rejects everything else. Cons: none AFAIK, soundwise. (Otherwise there is, cost and so on) Unbalanced, industry standard. Not that bad😉 This is religous
territory😱
Steen.
You are right🙂 To make it simple in the spirit of these amps, why not scissor out the zener regulator, including capacitance multiplier, from the ZenV4? I have used it on several occasions with very good results. If there was any hum from the supply, it totally disappeared after implementing that simple regulator🙂 Furthermore, a big Mosfet is a rugged device that can take some beating😉 I think a LM338 will raise the white flag before a hefty IRF device does🙂
Steen.
It will probably put me in the dog house (3 amp projects at once), but I'm gonna have to get in on this as well...
Member
Joined 2002
AHH the dogie house i love that place it is so quiet and no one to talk to me : O ) i love the couch too : O )
im starting a small spread sheet for this soon to ask brian go start a wikki then we can see how much it is for the boards and how many and ect ect things.
Jason
im starting a small spread sheet for this soon to ask brian go start a wikki then we can see how much it is for the boards and how many and ect ect things.
Jason
Member
Joined 2002
Great, two more amps to build 
I am in for a dual mono set, whenever this is ready 🙂
p3a, doz, lm3876, aleph2, aleph-x (will probably never finish), ksa-50 and now mini-a 🙂 i am crazy.
I am in for a dual mono set, whenever this is ready 🙂
p3a, doz, lm3876, aleph2, aleph-x (will probably never finish), ksa-50 and now mini-a 🙂 i am crazy.
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