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Are the SS DynaFet gerbers available? Couldn't find at the link in spritzer's 5/10 post, nor Kevin's 9/4 post. Were the balanced Dynahi and FET boards done in 2011 for Lil'Kinghts GB the SS versions? They look like it, but I could be wrong... I attached the schematic I have. What FETs were these targeted for? The BOM he had showed 2SJ76/2SK213s, but for some reason (availability), I thought the last version used something else? dynafetschembal.pdf

Why are you concerned about using the 15V supply for this? Minuscule current draw if it is just the switch LED. Sent from my iPhone using Tapatalk

An all in one would be nice, with some sort of PCB mounted xfmr. Seems like the EI-30 types that Amb spec'd are harder to find these days. Sent from my iPhone using Tapatalk

Sorry for you loss Wayne, and RIP Bill!!

That looks interesting Marc. Keep me informed as I might be interested in this approach.

Revisiting this again (lighted vandal type power switch). For the DynaFet, if I used a latching switch such as Birgir uses (250V 5A rating), though it is simple, the AC wiring from the IEC to the switch would need to run right under a GRLV in the front, which I don't really want to do. Using an e24 (and probably the o24 transformer board) mounted back by the IEC, only DC wiring would go to a momentary switch (Bulgin, eSwitch or the like) in the front. IEC would be switched and power the o24/e24. A power relay (the Omron G8P-1A2T-F-DC12 recommended isn't available, so maybe a G7L series Omron) would be run off the e24 to power the main transformer/GRLV. I know john uses the e24s a lot. How many use this or something similar, vs. the latching direct AC-switches?

Happy Birthday!

Silca always made good shit, even back in the day. Still have a couple of their frame pumps and a track pump with Columbus tubing. Pumping a sew-up on the road to 120+ psi was a workout, but quite doable [emoji4] Sent from my iPhone using Tapatalk

Sounds like the consensus was t-POS... Sent from my iPhone using Tapatalk

I'm not sure whether you could use the MPSA06/56 in this application? These are still available. Kevin might need to offer his opinion on that. These are rated at 625mW vs. the 1W for either the MPSWs or the PZTA SMD devices. EDIT: not sure why my earlier edit didn't show up (user error?) At any rate, I see that Arrow still has the MPSWs available in single quantities... Sent from my iPhone using Tapatalk

Normally you just load the .zip file into a gerber viewer. I usually use https://gerber-viewer.easyeda.com, but there are a bunch of them out there. And as Kevin mentioned, no on the 7815/7915 v-regs. The SMD version would be the path of least resistance, and the device sizes used aren't bad at all to solder. Sent from my iPhone using Tapatalk

Take a look at the link in this post. https://www.head-case.org/forums/topic/11779-stax-mafia-circuit-boards/?do=findComment&comment=764131 Not sure what you are asking regarding SMD and non-SMD (through-hole)? I would look maybe at the 1.2 version, but check with a gerber viewer. The ebay link that you provided is not the SS Dynalo but the unbal-to-bal board (not the same thing). It also isn't a dynahi balanced (auction title). Not even close. Boards are so cheap to have made anymore that you would be better off to return these, and have some made from the proper gerber files. Also note that the through-hole devices (On-Semi MPSW06/MPSW56) are discontinued, so not sure where you will find genuine parts of these... hence, the SMD version as those are available.

Good for you! Sent from my iPhone using Tapatalk

WTF???!!! Damn that is a big loss. RIP Tom... And RIP to all of those lost their lives yesterday at that fucked up deal in Vegas. Sent from my iPhone using Tapatalk

Same here (ep 4 I think), and I too agree with your assessment regarding what we put the Vietnamese people thru... fucked up.

Google maps shows it as being ~3mi from the shop to Two Brothers via the Prairie Path. If the surface is like the PP (asphalt or packed gravel) I'd be ok with it. Loose gravel, particularly in the dark, would be a problem. Exceedingly non-HC, but don't have a mtn bike, fat tire, etc. The bike in pic has 28mm tires on it (meas. 26). Used to ride PP with 23s Sent from my iPhone using Tapatalk

Definitely Jeff. The Werewolf ride looks pretty fun; unfortunately I am supposed to meet some former coworkers that night at a new place in Naperville (Pour House?). If that falls thru, I'd probably be up for it. Is the ride just from the shop to Two Brothers roundhouse, and back? Sent from my iPhone using Tapatalk

Did 3 of my normal path rides around the lake this week (6.2 mi). Only pulled a biscuit boy once when an old(er) guy's dog ran out in front of me. Managed to unclip and stop, but still fell over. No damage... unlike the biscuit [emoji4] Sent from my iPhone using Tapatalk

One of the dy294 testers might help determining the validity of the eBay parts, but yes, eBay and even some commercial suppliers (Dalbani, probably others) should be viewed with suspicion. Sent from my iPhone using Tapatalk

Happy Birthday! Sent from my iPhone using Tapatalk

Happy Birthday! Sent from my iPhone using Tapatalk

Yeah, TDA1541A availability certainly is an issue, particularly when you need to parallel 8 of them or so... And agreed on grain of salt regarding SBAF... Sent from my iPhone using Tapatalk

Anyone heard or looked at ECDesign's Mosaic UV Dac? John Brown has been quite active on DiyA with NOS TDA1541A designs, but apparently decided that the chip had too many design problems to go further than he had. He designed and implemented a discrete Multibit Dac design which has gone thru several iterations. I think they discuss it some on SBAF, but haven't read it. Not sure if this guy and disciples are of the "mystic" variety ala lampizator, etc. though... Sent from my iPhone using Tapatalk

It looked like they have an online order form. Shipping to the US (or not Aus) looked like they have to contact you with the amount. Did you try that route? Sent from my iPhone using Tapatalk

Happy Birthday Jim! Sent from my iPhone using Tapatalk