The Shop > Electronics & IC Programing
Digital oscilloscope project/kit
DICKEYBIRD:
Just a quick post to say thank you very much to all who have contributed to this thread. I read & enjoyed every word. I never knew so many wonderful things are done by mere mortals in their own homes & workshops....with so little money!
Cheers to you one & all! :beer:
Pete W.:
--- Quote from: hopefuldave on February 14, 2016, 08:31:45 AM ---Sounds like the IC "reclaimer" I saw who turned a blowlamp on the solder side then bashed the boards on the bench - 95% removal rate, and they *looked* fine...
Dave H. (the other one)
--- End quote ---
Maybe I'm about to propound yet another urban myth but here goes anyway: :lol: :ddb: :lol: :ddb: :lol: :ddb:
My understanding is that the flame (e.g. propane or paraffin) is a plasma so it's conductive. There's little risk of electrostatic discharge damage :zap: to the chips because, while they're in the flame, all their 'legs' are effectively shorted together.
awemawson:
Well certainly I don't remember any of the ic's being faulty after removal that way, and some were the early MOS memory chips that had little inbuilt by way of electrostatic protection. But it was mainly TTL 7400 series or the Mullard FCHXXX or FCKXXX series equivalents.
RobWilson:
Evening Chaps :wave:
I thought I would mess about with anouthe Bangood project tonight :zap: , I welded up the wee power supply to use with the signal generator .
Not a bad board it dose have a few SMD parts , three fairly large inductors , noting the new hot air gun could not cope with :thumbup:
The soldering welding is not the best a my solder paste had gone off :( anyway I got the project up and running with only one hitch :Doh: , some fool soldered one of the shottky diodes arse about tit .
Which causing the board to have no minus voltage outputs ,,,,,,,,,,,,,,,,,and made the buck convertor get a tad warm :palm:
I must admit to enjoying troubleshooting my f45k ups :lol: and here are a few action shots of it and the signal generator working :ddb:
all gipping stuff lol .
Question for the more knowledgeable , the board has a 3.3v output , I would rather have a 9v out put , is there a replacement for the 1117-3,3 smd voltage regulator that I can replace with a 9v reg ?
I have had no luck finding one ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,due to not knowing what I am looking for :lol: :lol:
Cheers Rob
John Rudd:
Rob,
You may need to mod the board to get 9 v.....
Have you got a link to the kit or the schematic?
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