Brads Electronic Projects Forum

Yes, I was looking at various designs online and found this one to be the best .

Do you have any links for a variable dual rail PSU Brad ? I wouldn't mind making one for my workshop

Jay

Thats what I've done isn't it ? Or have I done something wrong

Thx

The next stage is to build another identical one, get a dual gang pot and an Ipod line in/charge desk stand thing.

Then I'll have a stereo ipod dock that will charge too.

I think I'll make the cabinet out of wood and make it look old fashioned ... maybe oak

Hi Gav,

Thanks I must say again I'm amazed at the quality, the vid does it no justice

It did get very hot with a smaller heatsink running off my bench PSU, drew about 1/2 amp at 9v. Running on the little 9v supply with that sink ( stolen from an old laser printer ) it's cold to touch.

Hi Guys n Gals

This is the design I'm using for a similar project
I decided to make the comparator adjustable ... Any comments or suggestions welcomed

Hi all...


Me again

Ok... heres my amp project !!!

I am amazed by the tiny amount of components needed and also by the quality too... a fantastic little chip...plus it runs fine on a 9v battery too !!

Hi guys, Thought I would share some of my latest stuff. I've been learning about op amps and audio amps so decided I would build one. The most important thing with any amp is a good PSU...so I thought I would make a Dual rail one. Heres the result. The 78** and 79** can be replace to give any voltag...

Thats absolutely fantastic

Looks great fun as well ... especially after a few beers

btw ... Pong is my nickname for my daughter ... dont ask

Jay

Thats a great link thanks Gav.

My next project is making a decent audio amp so all this is very helpul

I've already made a decent dual rail PSU, just waiting for a few resistors etc and I'll post it all up once done

Jay

Hi Gav, I have built an almost identical circuit to this as I've been playing with amps / filters peak detectors etc... I am using a small electret mic to pic up sound then a low pass filter and adjustable comparator for counting beats ... purely for fun :) What I wanted to know is do you use a mic ...

Thats amazing Brad

Can you put a video of it running... would love to see it

Thanks Gav, bought a selection of them.

Much better than plain old headers !

Jay

Ace project matey

Where do you get the connectors from that you use on your board Gav ?

The 2/4 way one that connect the pots etc to the PCB .. what are they called ?

Cheers

Jay

Hi Gav, Yes I did read it and it does make complete sense now. What confused me was the ms count ... but once I understood the count was carried over it clicked ... so it is a very accurate method :D Thanks for posting it, I read the thread and thought .... hang on that sounds familiar :lol: Cheers ...

Hi Gav, Thx for the reply. Whats confusing me is what the timer is actually working at. If it works at ( scaled at 1000 as in code ) 1638 then at 6 cycles its 9828 and at 7 its 11466 The code is set to ms>=10000 ... so does it roll over at exactly that or 11466 ? I ask as the code I've written seems...