Just a quick power supply capacitance question

[markiemrboo]

Originally posted by Nuuk

I don't think that I did say that!

I'm near enough ready to give up. I do have a feeling, because you know I am a newbie, that I cannot possibly be right about this.

If someone has the time, please do draw me a schematic of how this second diagram is actually supposed to be.

Because to me, it's showing two regulated supplies off a single transformer, each one powering a single channel. I can't see what else it could possibly be showing. The first diagram is showing a single regulated supply for both channels, the second diagram shows two 'regulator circuits', one per amp channel, single transformer.

I've tried drawing it as a schematic as I see it, two regulated supplies on a single transformer, and you've pretty much just laughed and taken the ****.

[markiemrboo]

I've built all three of these supplies myself , they do work and I don't understand the confusion.
The first one is one transformer dual secondarys, pair of rectifiers with a single dual reg circuit set to output +/- and gnd running two amps.
The second one is one transformer dual secondarys , pair of rectifiers with a PAIR of dual reg circuits set to output +/- and gnd so now each amp has its own dual reg run from the one transformer and dual rectifiers

Yes! Right! I might be getting somewhere. Thank you.

I have built it as (as far as I can tell)

The second one is one transformer dual secondarys , pair of rectifiers with a PAIR of dual reg circuits set to output +/- and gnd so now each amp has its own dual reg run from the one transformer and dual rectifiers

Could I ask you (when you have some free time) to draw how you have wired this up?

EDIT: I am rubbish at trying to describe things, but if you can understand... have you basically got "the second regulated supply" sort of... in parallel to the first? From each "DC" output of the bridge you're taking two wires, eight wires in total, four wires per regulated supply?

[Ropie]

I've tried drawing it as a schematic as I see it, two regulated supplies on a single transformer, and you've pretty much just laughed and taken the ****.

Sorry if this is how you feel but you've asked an almost endless stream of fairly pointless questions. The thing is to have a break and think about what has been said in answer to what you asked, not to keep on repeating the question ad nauseum. Electronics can be a frustrating business -- I should know, I've struggled with most things I've attempted in it. Quite often the best idea is to sleep on the problem...

[Nuuk]

I'm near enough ready to give up. I do have a feeling, because you know I am a newbie, that I cannot possibly be right about this.

This is not about being right or wrong! It is about you understanding some of the basics, like split rail supplies.

Do you know how long it takes to draw these circuits? Asking somebody to draw out a full circuit for all the options is just taking the **** - you that is, not me!

If you start by trying to understand the simplest of those three options, understanding the other two should be easy.

The second circuit just repeats the regulator part of the circuit (after the rectifier bridges, as I stated clearly before) so that each channel has its own split rail supply.

Trust me, these diagrams are correct. If you don't understand them then it is because you don't understand them, not because I have made a mistake. So calm down, stop being so adversorial, and take your time to understand how they work because they do, as somebody else has taken the trouble to tell you too!

I don't take advantage of newbies. The whole reason for Decibel Dungeon is to help newbies. But you don't help yourself with the attitude that you have displayed throughout this thread!

[t.]

Originally posted by Ropie


Sorry if this is how you feel but you've asked an almost endless stream of fairly pointless questions. The thing is to have a break and think about what has been said in answer to what you asked, not to keep on repeating the question ad nauseum. Electronics can be a frustrating business -- I should know, I've struggled with most things I've attempted in it. Quite often the best idea is to sleep on the probem...

Yes this one has proven to be hard Ropie

[Ropie]

Originally posted by t.

Yes this one has proven to be hard Ropie

Yes, all credit to Nuuk (and yourself) for taking the time to respond

[markiemrboo]

Originally posted by Ropie
[B]

Sorry if this is how you feel but you've asked an almost endless stream of fairly pointless questions. The thing is to have a break and think about what has been said in answer to what you asked, not to keep on repeating the question ad nauseum.

I was just trying to get you to see what I am seeing. There appeared to be misunderstanding in what I was trying to achieve.

Electronics can be a frustrating business -- I should know, I've struggled with most things I've attempted in it.

Yes, yes it is.




If "t." can see this [rather crude looking] picture, is this how you've got it wired... or have I misunderstood you again now?




(with filter caps before the regulators and after the BR's, i have left these out)

Assuming that the blue line from the bridge is the DC "-" tab, and the red the DC "+" tab, and the lines after the regulator, red = +ve, blue = -ve and green = 0v?

[Nuuk]

Yes, all credit to Nuuk for taking the time to respond

An excuse to stay up and watch both episodes of Two Pints!

[Nuuk]

If "t." can see this [rather crude looking] picture, is this how you've got it wired... or have I misunderstood you again now?

Eureka! That's it!

[t.]

Well I admit DD is the site that got me into diy, I also built my first GC because of that site so we do appreciate it Nuuk!
All the stuff I've built off there has worked too and I personally found everything very clear
Please keep up the excellent work