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Registered Member #158
Joined: Sun Feb 12 2006, 09:53PM
Location: Central Ohio
Posts: 282
I have a small box of scr's given to me for my coilgun project a few years back that I havent used yet. I would like to use them if possible so I went through all my boxes and found em. The problem is I dont have any data on them and cannot find any online either. They are I beleive what is a TO-94 package (1 heavy screw mount stud, 1 heavy gauge lead, 2 small guage leads). They are labeled NL-1130-008.
There was also a note in the box to the original recipient (my vocational electronics instructor) that states "we are going to offer the C164M part as a replacement for the old 1130-008. This is a little overkill but will be a better part. The C164M are in stock and $58.90 per piece." Maybe this was for future reference becuase the part# matches the fore-mentioned 1130-008. I did find the specs on the C164M however, it is 600V, 110A, TO-94, TQ=10.
I am hoping what I got will hold up to about a few hundred joules ~400V per stage. I figure what I am asking probably no one knows but I figure might as well try and ask.
P.S. Can SCR's be paralleled for increased current pulse capability?
[Mod edit: moved from EM projectile board. It's about SCRs, not projectile accelerators.]
Registered Member #78
Joined: Thu Feb 09 2006, 11:27AM
Location: Sydney, Australia
Posts: 133
yeah, of couse they can. Although they should be similar SCRs so one doesn't switch on first and hog all the current. A seperate gate resistor on each SCR would also help with the current balancing i'm told.
Registered Member #195
Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
If he C164M is a resonable replacement then I would go with it. Thease probly can handle up to 500 amps PEAK witch might be in the specs as a peak rateing. If you want to parellel them they should have a half an ohm or so in each anode and they have to be fired at the same time. The best way would be try it and bring the voltage on your caps up slowly. If you had a low indutance resistor say .1ohm in the collector and a o-scope you make a curent veiwing resistor. This resistor could be 10 1 ohm carbon compisition or metal film resistors in prallel. good luck.
Registered Member #158
Joined: Sun Feb 12 2006, 09:53PM
Location: Central Ohio
Posts: 282
I am not getting any C164M I already have a bunch of the 1130-008 SCR's. I was just saying they should be similar according to the info. What I am trying to do is identify and come up with a spec sheet on the ones I have. My research to that end has come up with nothing so I figured I'd post it just incase someone here has used/seed this scr before or maybe has some more references than I do.
About paralleling them... I know the safest way to parallel anything is to put a small resistor in series with each device. Is .1ohms too high though? If I was actually pulsing say 500A I would think .1 might dissapate quite a bit of power. But then again there needs to be enough resistance there to force the system to roughly balance. Could I go lower, like .05?
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SCR I.D.? [Moved from EM Projectile board]
