Skooby
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Posts posted by Skooby
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Paid! Thanks, Michael!
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Always want to get a laser engraver/cutter for my Stepcraft CNC rig. This seems to be a good idea. But don't know how turn the laser on (or off), via g-code?
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Take care of yourself first! This is just a hobby, no rush.
Wish for your quick and complete recovering!
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Not sure which version of board do you have. I have a set of un-used, un-populated, on-board heat sinks rev. 0.61 amp boards (two) and rev. 0.9 power board. Bought as a spare set for your type of case (so sorry to hear), but the first set worked out fine for me. I have no plan to use this set at all. PM me if you want to rebuild and we can arrange something out (minimal to your favor).
(Seeing that you're in Norway ad I'm in the U.S., not sure the shipping cost will kill the whole purpose)
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Micheal, can you add me/skooby to the PCB list:
4 x grhv, 4 x grlv78**, 4 x grlv79**, 2 x psu main board, 2 x t2 mini
T2 mini board is married right, not separated (one board for both left/right chn)? Thanks for doing this, Micheal! Thank you to Kerry and Joachim for sharing the designs!
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May be a help to someone...I once bought a Tek 2213A at a local swap meet but got no power. Took to this gentleman:
Scott Howell ([email protected])
MobileTek
7456 Eton Ave
Canoga Park, CA 91303-1408
Tel: 818 346-6673
Fax: 866 872-8648He used to work for Tektronix so he's knowledgeable on Tek. He re-capped and re-calibrated my scope. Worked great ever since!
Highly recommended to repair or service Tek. I did this in 2014, not sure if he's still doing it; he's a retiree.
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Thumbs-up on the Metcal! Old tubes sometimes are humming too.
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I've bought his boards before. Just ask him which and what resistors to change to get -20V (he gave me both 1% and .1% resistor options).
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For RK50, email/contact Justin Wilson@Heapamp. I got mine from him (for a pretty good price).
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How do you manage the heat? Is it getting too hot (> 50C)?
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Bought my set of DIYT2 transformers from Richard a few months back, just tell him the Gilmore DIYT2 set (http://primroseaudio.com/transformer-designs/)
*** He gave me only a single 117V primary ***
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Pars, the plus is Rean NYS221. That extra front recess is for a guitar strap. I think NYS2203 looks nicer. Mouser got 'em all.
Yes, standard SMD board. I moved everything off-board except for the XLR inputs in the back.
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A new DynaloMini for a friend:
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Thanks for all the hard works, Steve! Truly apprenciate your effort in helping DIYers.
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55C sounds about right (forgot what was my bias). My Dynahi runs at about the same temp after 30 min (measured via an IR-based meter, a few degs off here and there is not a big deal). Have you checked with Steve about where he got his tranny shieldings? I run with Anteks and they seem to shield adequately. Single-box saves quite a bit of space; if run two boxes, do consider umbilical resistance.
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Nice rework station! The price is pretty reasonable too, should have known about it six months back (when i bought my rework station).
Any recommendation on desolder gun? Hakko fr300/301 any good?
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My hat's off to those who managed to solder on the qfn's. On my latest boards, could only solder the positive qfns, gave up on the negative. Will try to-220 tps7a3301 on the boards from the current GB.
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Well, if you can get the heat sinks to transfer some heat to the chassis (shimming extra metals on top the sink so it can get touch the chassis top), doubt that the heat in the channels would be a problem. My Mini's temp is about 32C with help from the chassis to dissipate the heat; without the chassis help, it was well above 50C. I didn't do any hole into my sinks.
I see you didn't attempt QFN solderings with your new re-flow gun?
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Cheaper than WE300B reissued !
JAC Music got a pair for ~500usd, still pretty steep for a set of four.
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CFP2 is CFA (current feedback amp), right? Much different from Dynahi? I already have the Dynahi, wonder if it would be just a duplicate to build the CFP2.
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I got Sparkfun 303d station. Not the cheapest but the air pump in the base is better than in the gun, i think. Did all my smd's with it.
Ebay got lots of choices but not sure which will support parts, warranty, complaints, etc.
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Good job on the QFN soldering! For some reasons, couldn't get the negative to work. I reflow so many times that I thinked may burn thru the regulators.
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I like 009 more than 007MkII out of the Carbon. To me, worth the $$$.
May be get a chance to listen to both before commit buying anything?
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3 hours ago, bui501 said:
Mouser doesn’t carry the LSK389.
Check Trendsetter, this was where I got mine.
eddie current dht filament
in Do It Yourself
Posted
Thanks Dr. Gilmore,
Got a pbc made from the schematic. Played around with R1=120-ohm to get a good-enough sinusoidal wave; adjusting R2 and R3 to 10K to get 76kHz wave. Hand-wounded trafo, not pretty but does the job...