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Old 16th August 2011, 01:42 PM   #1241
Salas is online now Salas  Greece
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Creative use of redundant positions, nice. With 12V reg straight to the input relays I think there were no erratic denials from the input selection actions in the MEZ.
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Old 17th August 2011, 02:13 PM   #1242
cersepn is offline cersepn  United States
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Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

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Old 17th August 2011, 02:17 PM   #1243
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You changed signal resistors to Texas and Caddock? Nice pic. Since the chassis floor is 4mm and the box normal size, better sink them there.
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Old 17th August 2011, 02:22 PM   #1244
cersepn is offline cersepn  United States
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Haha, actually that's not my dcb1. I stole it off someone else here

those vishays are definitely in the pipeline though
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Old 17th August 2011, 04:29 PM   #1245
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By lvl1, did you mean using 10 ohm resistors for 200 mA?

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Originally Posted by cersepn View Post
Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.
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Old 17th August 2011, 05:38 PM   #1246
cersepn is offline cersepn  United States
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Yea, 10 ohm - 200 mA. Will that be a problem?
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Old 17th August 2011, 05:54 PM   #1247
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Quote:
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Yea, 10 ohm - 200 mA. Will that be a problem?
No, I'm thinking the same thing. My heatsinks is a bit bigger than yours. I don't plan to mount to the chassis and want to make sure it is OK. Now you reported "HOT". Would the DCB1 be stable?
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Old 17th August 2011, 06:16 PM   #1248
Salas is online now Salas  Greece
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Measure your sinks, if they don't go over 55C, they could make it. Punch ventilation holes on the box under and top of them.
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Old 17th August 2011, 06:47 PM   #1249
Marra is offline Marra  United Kingdom
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Quote:
Originally Posted by cersepn View Post
Before i mount my lvl 1 hot rodded dcb1 into the chassis, i was wondering if it would be better to use the bottom of my chassis (bottom alu sheet measures ~ 350mm x 430mm x 4mm thickness) as the heatsink instead of the heatsinks that i'm using right now. I realize with these heatsinks i can only rest my finger there for at most 5 seconds - it is really quite hot.

Click the image to open in full size.
Would it be a good idea to heatsink the 10 ohm caddocks?
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Old 17th August 2011, 06:49 PM   #1250
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Quote:
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Would it be a good idea to heatsink the 10 ohm caddocks?
Yes, otherwise they are typically 2W's.
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