What are you wanting to learn in reference to them? I have built a few and just finished a 12 channel build.? I lot has shifted in the past 20 years specifically the use of Class D. My build used LM3886 chips?

Best Regards,

Jules Ryckebusch?

On Sep 17, 2024, at 13:42, Adrian Hicks via <kartparts=[email protected]> wrote:

?

I’ve been looking around to try to find some sources of material to enable me to learn about how amplifiers work.?

I’ve only got the most rudimentary electronics knowledge so end up floundering very quickly.?

I bought The Art of Electronics a while ago and have had a cursory browse through it.

I was also recommended this paper by an old work colleague.

"Audio power amplifier design" has also been recommended to me.

What do you guys think / recommend to enable learning about these things? It seems that a lot of you are well versed in the ways of coercing electrons

lol that is more than an email ?.? Let me see what references I can find.?

Best Regards,

Jules Ryckebusch?

On Sep 17, 2024, at 13:54, Adrian Hicks via <mail=[email protected]> wrote:

?

The basics of how they work.

I've looked at your designs and from other conversations on here seen other schematics.

I'd like to be able to read a schematic. Currently I can only work out the most basic elements such as filtering caps and voltage dividers but not the whole schematic.?

It's analogous to being given a map but not having the ability to read it but being able to see the destination on it.

On Tue, 17 Sept 2024, 18:50 Jules Ryckebusch, <ryckebusch@...> wrote:

What are you wanting to learn in reference to them? I have built a few and just finished a 12 channel build.? I lot has shifted in the past 20 years specifically the use of Class D. My build used LM3886 chips?

Best Regards,

Jules Ryckebusch?

On Sep 17, 2024, at 13:42, Adrian Hicks via <kartparts=[email protected]> wrote:

?

I’ve been looking around to try to find some sources of material to enable me to learn about how amplifiers work.?

I’ve only got the most rudimentary electronics knowledge so end up floundering very quickly.?

I bought The Art of Electronics a while ago and have had a cursory browse through it.

I was also recommended this paper by an old work colleague.

"Audio power amplifier design" has also been recommended to me.

What do you guys think / recommend to enable learning about these things? It seems that a lot of you are well versed in the ways of coercing electrons

"The Art of Electronics" is absolutely worth having. True story : while I was struggling in Electrical Engineering (its almost all calculus, and i suck at calculus),? my friend in Physics took a one term electronics course that went straight to all the practical every-day transistor design stuff that I was dying to learn, and "The Art of Electronics" was their text. Op-amps are vital audio building blocks, so be sure to spend time with those.

?

Rod Elliot's circuits are also very useful, as well as Paul's advice here. And I believe there are some decent free electronics courses online. So it is possible to learn from basic principles and go up.

?

It's also possible to go in the other direction: find a project you like, build it, and then spend some time learning about how that circuit actually works (and how you could tweak it). A lot of useful hacking is done these days just by using an IC or module as a black box.

I do not have a book or website to recommend except perhaps Rod Elliot’s, but what you seem to want is an understanding of the various basic single-stage amplifier types, such as common emitter, common base, common collector, and then the fundamentals of different devices such as BJTs, JFETs (depletion mode and enhancement mode), MOSFETs, and so on.?

Then you want to be able to look at a complex schematic and break it down into functional blocks. To keep this on track a typical mic amplifier has an impedance converter to go from the extremely high impedance of the capsule to a low impedance that is capable of driving more circuitry without attracting EM interference, and then a low impedance drive stage to drive a cable of several metres and the input impedance of a preamp. You might also have a circuit to provide a 50V-200V polarisation voltage for the capsule if it is not an electret.

There have been various historical technologies used which still today influence the choices made, such as transformers in microphone preamps (which allowed “phantom” power to be used for microphones, so some of the modern circuits seek to provide optimum performance in a real world where some parts of the signal chain may not be optimised for current technology.

I hope this helps!

On 17 Sep 2024, at 20:11, Adrian Hicks via <mail=[email protected]> wrote:

Of course, I was more looking for recommendations on the best materials.?

I had considered an online course, but not wanting to become an electronics engineer I didn't really know what would be the best option.

Hill and Horowitz seems to be a Bachelors degree in a book, but it's just the size of it that makes it seem insurmountable. I suppose I just need to break down into the actual elements I really need to learn.?

I.e ohms and Kirchoff's laws and then move on from there.

I think being a mechanical engineer is a curse, because anything you don't understand means that you now 'need' to understand it.

On Tue, 17 Sept 2024, 19:02 Jules Ryckebusch, <ryckebusch@...> wrote:

lol that is more than an email ?.? Let me see what references I can find.?

Best Regards,

Jules Ryckebusch?

On Sep 17, 2024, at 13:54, Adrian Hicks via??<mail=[email protected]> wrote:

?

The basics of how they work.

I've looked at your designs and from other conversations on here seen other schematics.

I'd like to be able to read a schematic. Currently I can only work out the most basic elements such as filtering caps and voltage dividers but not the whole schematic.?

It's analogous to being given a map but not having the ability to read it but being able to see the destination on it.

On Tue, 17 Sept 2024, 18:50 Jules Ryckebusch, <ryckebusch@...> wrote:

What are you wanting to learn in reference to them? I have built a few and just finished a 12 channel build.? I lot has shifted in the past 20 years specifically the use of Class D. My build used LM3886 chips?

Best Regards,

Jules Ryckebusch?

On Sep 17, 2024, at 13:42, Adrian Hicks via??<kartparts=[email protected]> wrote:

?

I’ve been looking around to try to find some sources of material to enable me to learn about how amplifiers work.?

I’ve only got the most rudimentary electronics knowledge so end up floundering very quickly.?

I bought The Art of Electronics a while ago and have had a cursory browse through it.

I was also recommended this paper by an old work colleague.

"Audio power amplifier design" has also been recommended to me.

What do you guys think / recommend to enable learning about these things? It seems that a lot of you are well versed in the ways of coercing electrons