sbelyo
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Posts posted by sbelyo
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If I take say 1 120 Ohm 5 watt wire wound resistor for each channel that's sufficient for a dummy load correct?
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On 10/21/2012 at 2:32 PM, sbelyo said:
Balanced gain will be 10 by changing R52, R56 to 50K and C1, C3 to 5 pf.
Got it... Thanks for the schematic Chris. It's the 200K resistors. The cap has to increase to 5 pf
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I need to make sure what resistors are the feedback for gain. Are they the 10K or 200K on either side of the input?
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looks good
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good, no magic smoke
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Yeah, voltage seems ok. I'll go ahead and put it under load to see if it drops below the voltage that it should be
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it did, I thought I had a very small fuse in there. Put a bigger one in and it held
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OK, so I did something stupid and accidentally shorted the secondaries of an Avel Lindberg Y23 transformer for two seconds. The voltage seems fine after I corrected the error. Do you think it survived, and or what's the harm in using it?
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loved that show... it's on sometimes daily where I am
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lol, yep. Luckily I work from home. The cars were already encased in at least a half inch of ice while I was untangling the cord
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Sucked up an extension cord into my snow blower... FVCK. Spent an hour untangling it, went to pull start it and the cord won't recoil now. Had to drag it back in the garage. I'm mad now! Snow is stupid... At least the driveway was clear when my wife came home from work
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got it
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Thanks for the schematic! When I look at the board JP1 seems to be in the mix. Can you tell if I have to close JP1 to use U2?
Looks like this is the part number I need for U2 LT1021DIN8-5#PBF
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glad it all arrived!
perhaps this was your mail man
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Very cool, thanks for looking at it. I'm going to build it and run it without a crowbar circuit for now until I can figure out what circuit to use. I asked for the schematic btw and they said no
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On 7/4/2018 at 4:39 AM, Craig Sawyers said:
Apart from its use as a PC linear supply, that is good value for a grunty supply anyway.
The thing to watch is reliability though. If one of the linear supplies goes down and the other voltages stay up, what happens? Or if one of the linear regulator series pass transistors go into second breakdown and shove raw rectified voltage up a supply line. A bit of failure mode thinking might be in order.
Both Craig and Kevin made a good point that I failed to see. If any of the regulators let go it will send unwanted high voltage upstream. Does anyone know if there are some crowbar circuit pcb's out there? There's plenty of circuits I see on the web but not sure what to use.
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Anytime...
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my pleasure
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I see a bunch are delivered already. I'll try my best to post the leftovers this weekend.
As far as another group buy goes, I'm open to it. GRLV boards are always popular and I'll add + only (positive rail) split GRLV boards since I could use a few for projects. I thought I saw a while back that Kerry posted a smt GRHV with LV. There's also the TH Buffer 2.0 boards as well so if anyone can think of anything else they need just post it in here
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My stuff came in. Thank you Steve!
No sweat man... sorry for the wait
Sent from my iPhone using Tapatalk -
could this be given the GRLV treatment?
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Here's some scans of the part list and top and bottom of the board.
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Everyone but Nebb, Jgazal, and Samsie are all packed up with shipping printed. USPS will pick them up today at the house, fingers crossed. I'll go through the leftover boards this weekend and post what's left.
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everyone's weighed
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Realistic SA-10 as a headphone amp?
in Do It Yourself
Posted
definitely check the offset on that thing. Not sure how good this would sound
probably need to do something like this
http://www.dms-audio.com/power-amp-heaadphone-adapter
I'll work for a bag a chips and a cold beer