digger945 Posted July 8, 2009 Report Posted July 8, 2009 Ditto on everything Marc said. This one of Gilmore's children does not play well with others. It's hot headed for sure, and if left unattended will burn the house down.
guzziguy Posted July 8, 2009 Report Posted July 8, 2009 I'm about 95% done stuffing the board marc sent me, this is definitely NOT a beginner project. I'll be machining up some custom brackets in the next couple of days. If anyone sells boards to -=her=- i will hunt them down and kill them. Seriously a person with her skills has no chance at this thing. Wait, isn't she a fully-fledged engineer now? She just graduated from Northwestern and is ready to do anything.
luvdunhill Posted July 8, 2009 Author Report Posted July 8, 2009 Wait, isn't she a fully-fledged engineer now? She just graduated from Northwestern and is ready to do anything. She'd probably just take it to Ray to fix anyways Oh, pabbi1, so far things have been pretty boring, except for this little "incident":
guzziguy Posted July 8, 2009 Report Posted July 8, 2009 Somebody must have been looking for the magic smoke and it appears that they found it.
DigiPete Posted July 8, 2009 Report Posted July 8, 2009 Ditto on everything Marc said. This one of Gilmore's children does not play well with others. It's hot headed for sure, and if left unattended will burn the house down. Sonic impressions??? Who is she
pabbi1 Posted July 8, 2009 Report Posted July 8, 2009 What a piker - certainly you can do better than that. Now please excuse me while I _try_ to keep from doing that with some basic ground wiring. She is Stacy, aka -=Germania=- on HF.
Smeggy Posted July 8, 2009 Report Posted July 8, 2009 Well, that's some serious sinking and exploding! Anyway, a project like this would be easy-peasy to -= =- and along the way she'd modify the design, replace various parts and make it moar better.
kevin gilmore Posted July 8, 2009 Report Posted July 8, 2009 I was just teasing. I sure hope she does not find out about this. Yep she is a full fledged SOFTWARE ENGINEER.
Nebby Posted July 8, 2009 Report Posted July 8, 2009 interesting how that "software" part gets dropped off along the way...
digger945 Posted July 8, 2009 Report Posted July 8, 2009 Sonic impressions??? Who is she I'm still probing around and adjusting things. It's really tough to say with only one board. From what little I have listened to, at most about 3 minutes at a time before shuting down to cool off, I think you guys will be very pleased. Don't you know -=Her=-, over on -=HF=-?
morphsci Posted July 8, 2009 Report Posted July 8, 2009 I was just teasing. I sure hope she does not find out about this. Yep she is a full fledged SOFTWARE ENGINEER. interesting how that "software" part gets dropped off along the way... Software engineer --> audio equipment designer as molecular biologist --> geneticist
spritzer Posted July 8, 2009 Report Posted July 8, 2009 Yep she is a full fledged SOFTWARE ENGINEER. Mikhail v2.01?
luvdunhill Posted July 8, 2009 Author Report Posted July 8, 2009 From what little I have listened to, at most about 3 minutes at a time before shuting down to cool off, I think you guys will be very pleased. 3 minutes? heh. Try the other feedback setting as well, once you get accustomed to this version. Need to recruit more advocates for adding a switch here
digger945 Posted July 8, 2009 Report Posted July 8, 2009 Yep I have been looking for make before break toggles. Did you ever see the thread on HF about the vintage toggles? I have looked everywhere for the easy to flip toggles found on older recievers, and also found on some not too old scopes. Love to find some of these somewhere besides resorting to robbing them from old equipment.
Icarium Posted July 8, 2009 Report Posted July 8, 2009 Hrm can you test what the onboard sigma22 heatsinks can handle?
n_maher Posted July 8, 2009 Report Posted July 8, 2009 Wise move on my part sitting this one out. Roger that.
guzziguy Posted July 8, 2009 Report Posted July 8, 2009 I was just teasing. I sure hope she does not find out about this. Yep she is a full fledged SOFTWARE ENGINEER. Me too, though not her. Software engineer --> audio equipment designer as molecular biologist --> geneticist Congratulations, you managed to drop both. I took almost the exact opposite trip: Biologist --> neurophysiology grad student --> software engineer I suspect that we are both happy with our trips.
morphsci Posted July 8, 2009 Report Posted July 8, 2009 Mine was actually an analogy: a software engineer is as much of an audio designer as a molecular biologist is a geneticist. Most molecular biologists do not have a very deep understanding of classical genetics, unfortunately, though most will tell you they do.
guzziguy Posted July 8, 2009 Report Posted July 8, 2009 I missed the "as", thereby unwittingly proving your comparison.
jinp6301 Posted July 8, 2009 Report Posted July 8, 2009 Biologist --> neurophysiology grad student --> software engineer I suspect that we are both happy with our trips. How did that happen?
kevin gilmore Posted July 8, 2009 Report Posted July 8, 2009 So i think people are pushing this thing way too hard. The design goal is 75 ma per fet times 4 fets (1 x p channel and 1 x n channel) For a total power supply of 300ma at 60 volts which is 18 watts. My heatsinks get to about 96F after being on for an hour or more. The fets can certainly take way more than this, and the board will happily drive them that way, but you have to take the fets of the board and heatsink like crazy. Then you should be able to get to about 50 watts pure class A into 8 ohms...
Icarium Posted July 8, 2009 Report Posted July 8, 2009 That seems significantly lower than the numbers that have been bandied around the last few pages ;p Then again I know nothing about DIY!
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