I guess I shouldn't be asking this at this point in life
Anyway, I've been discharging my caps through the preamp (pin 2
if I remember correctly with no resistor whatsoever). So far, I'm
alive and well. I'd like to keep that way, so I figured I should put
together one of those discharging fixtures as the ones described
here:
http://www.repairfaq.org/sam/captest.htm
http://www.schematicheaven.com/mods/capdischarge.htm
All I have handy (kinda difficult to find parts where I live) is 470R
and 910R 5w cement power resistors. Would this do the job?
I figured I could either use the 470R/5W or two in parallel to get
a smaller resistance and better power handling...
What do you think?
Discharging caps
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- skyboltone
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Re: Discharging caps
Fabio;
I personally don't see the point of the high power low value resistors. The power rating of a resistor is for heat dissipation during use. The drain down resistor will perform all of it's work rather quickly. Long before it has a chance to heat up. I use a 1/2watt 3.3K resistor on about a 18" lead with an alligator clip on the other end. Bend a little hook in the resistor lead and hook it around your last power supply section lead wire after the unit has been de-energised. Give it about 20 seconds, then clip a direct grounded lead at the same point and leave it there while you work.
Don't forget to lift your ground before turning it back on.
I personally don't see the point of the high power low value resistors. The power rating of a resistor is for heat dissipation during use. The drain down resistor will perform all of it's work rather quickly. Long before it has a chance to heat up. I use a 1/2watt 3.3K resistor on about a 18" lead with an alligator clip on the other end. Bend a little hook in the resistor lead and hook it around your last power supply section lead wire after the unit has been de-energised. Give it about 20 seconds, then clip a direct grounded lead at the same point and leave it there while you work.
Don't forget to lift your ground before turning it back on.
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Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: Discharging caps
I use a 2.2K 2W on 6" long leads with aligator clips. Works fine. Almost any value will do, this was just handy.
Re: Discharging caps
Thanks, guys.
I had no idea on the power handling...
I have some aligator clips around here, I'll just solder them.
Thank you very much!
I had no idea on the power handling...
I have some aligator clips around here, I'll just solder them.
Thank you very much!