[sdiy] Tube amp cap discharge tool?

Ken Stone sasami at hotkey.net.au
Thu May 19 05:06:24 CEST 2005


The problem with the cheap screwdriver trick is you need a new screwdriver
each time you try it :)  I've blown a huge chunk out of one doing this ONCE.

Ken

>The lamp will spark initially but the response time of a typical light 
>bulb is milliseconds I think due to the tiny tiny amount of thermal mass 
>involved :-).  So it will help some. But hey..just get a cheap 
>screwdriver with a well insulated handle and let er rip! :-)  -Bob
>
>Ken Stone wrote:
>
>>>Might be a bad idea at 300V...
>>>
>>>(what voltage you got in AU ?   Our light bulbs are 120V)
>>>    
>>>
>>
>>Our mains is 240V. Even so, using a light bulb is still a bad idea. Filament
>>resistance is too low when it is cold, so I'd expect you'd still get a heck
>>of a spark (the sort that blows away a chunk of your terminal)
>>
>>Ken
>>
>>_______________________________________________________________________
>>Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
>>Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>>Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>>
>>
>>  
>>
>
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>




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