Ervin, last year, I picked up some heavy copper washers from a friendly, local plumbing supply house for under a $1 ea. These were not the skinny crush-able type used for auto oil pans and the like. The washers were normal sized, like in your bolted assembly pic, and were meant for a Jacuzzi brand spa pump fitting. Just an idea that could help out?, or not.
I hope you weren't in to much trouble and dinner was ready when you got home. Its good to see you get the soldering done and the light lit up. For some reason I only seem to make them smoke.
still alive :bigsmile:
its my living profession right now to solder, and IT, and this kind of stuff so its not just luck that i haven’t smoked something just jet. in other side of the coin I would love to have the ability you have(and I lack) to work and bring to live beautiful metallic stuff like you do ….
first post updated, driver homework, still some things to do and post and than will be complete for the driver section on my build.
sort of BUMP
first post updated driver finally is over, hope to not have bothered anyone, next step design, head construction, metal, metal, metal …………
Hey Ervin, I’m also in the contest and I haven’t started yet, but I figure why not help out the competition in the spirit of BLF karma?
When you’re soldering 7135 chips together, try taking a TINY bit of superglue and bonding the stack together ahead of time. Saves a ton of frustration. Also some good tweezers like you can get from mountainelectronics.com
One more thing, if you very carefully bend the three pins on the chip down ahead of time on all but the bottom chip in the stack it’s way easier to get the solder to jump from pin to pin.
This is a really interesting thread Ervin. Just two tips you may not have dug up from the volumes of DIY posting that goes on here. One member, I think maybe Djozz but can’t remember and couldn’t find the post if I did, suggested this method and I used it successfully on a recent mod. Epoxy the chips together with hi temp epoxy(JB weld works) and weave fine wire around/between the pins.
The second tip is to use the dip switches to control the gate pins only and use a second high power switch for main power. This idea for the amc 7135 has been around for awhile but if you are new to using them you may not have seen it.
onetrickpony,Rufusbduck thank you both, super advices. I guess this are the type of benefits on an very friendly and with a lot of talented and experienced members around.
thanks to both of you it looks like driver going in a revision…
This is one seriously cool project black hole time sucking project(I like that) I’m enjoying your imagination both on paper, in copper, and on the keyboard. Just don’t lose your job over it.