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Digital oscilloscope project/kit

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awemawson:

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 :lol: :lol: :lol: :lol:

Hi Dave , whats on at Donny ?  will there be bacon or sausage  butties involved  ?  :D

Micro controlled , mmmmmmm sounds like a plan  :thumbup: 

I was planning  to use a current limiting resistor to charge the caps .  As to the size of the cap bank thats still a big question mark  :palm: , I would like to build a small cap discharge spot welder 
:zap:


Rob
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Rob,

My stud welder has 200v caps of 66,000 microfarad, that charges up to a max of about 180 volt and will fix an M6 stud as per this thread (no pun intended !):

http://madmodder.net/index.php/topic,10358.0/all.html

RobWilson:
Cheers for the input lads  :beer:


Looks like I will have to do some reading  up on capacitors , a classic case of Wilson running before he has even learned to crawl  :palm:


Canny stud welder Andrew  :thumbup: , good to read you got it all fixed . Used one myself many years ago  :dremel:  , I do remember one lads steel toecaps looking like two hedgehogs one morning
when he came into work   :lol:


Rob

PK:
A simple constant current circuit is better than a resistor because it will allow faster charging.
I used this for a small anodising supply once.

RobWilson:
That sounds a much better idea PK  :thumbup: , something I will look into .


Cheers Rob

wheeltapper:
Hi
update on my non working airband receiver.
it's still not working. :doh: :doh:

I've checked all the elec caps, the're round the right way, all the chips are right way round in the correct places, I unsoldered one leg of each diode ( 4 in total ) and tested those, the're the right way.
the transistors are the right way according to the silkscreen.

I even pulled all the chips to check if I folded a leg over inserting them, all OK.

I'll try some voltage checks next.

Roy.

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