October 16, 20169 yr 1 hour ago, Kerry said: Very nice chassis work. I like the red anodized face. Welcome to the wonderful world is milling. It really is very rewarding Thanks! I love machining -- if only they'd let me wear my electrostatic headphones around the milling machine 6 hours ago, JoaMat said: Indeed a most elegant amplifier. Impressive chassis work - like a Maserati. Aw! Thanks! :-)
January 7, 20179 yr Here is something new that I might make more of... the SMD KGSSHV. This is really my attempt to build a "cheap" electrostatic amp to bring a great amp to the masses. Lofty goal and I have no idea if it will succeed but its worth a shot.
January 7, 20179 yr Here are the boards mounted to the heatsinks. One small mod wire as the bloody layout software doesn't check the ground plane for continuity... The board has already been through major revisions to adapt this to mass production and I doubt I am done.
January 7, 20179 yr Really nice boards Birgir. Are you using an reflow oven? I’m in the process of modifying a 9L toaster oven using a Controleo2 kit for my Dynalo mini boards .
January 7, 20179 yr Nice job Birgir! What have you got the SK170 pair wrapped in? Also, can the HV silicon be obtained for these today? And are the thru-hole resistors just there cuz you didn't have the SMD on hand? What size package are the resistors? 1210? 0805?
January 8, 20179 yr I can't believe how compact that all is. Makes my circlotron case seem even more ridiculous than it already is. 9 hours ago, Pars said: What have you got the SK170 pair wrapped in? I would hazard it's plain old heat shrink used to force the flat parts together to help keep the temperature drift between the two more in line.
January 8, 20179 yr It is indeed all soldered by hand and they are 2510 resistors. Only size you can really use for electrostatic HV use even though I also use them for the LV stuff as well. That is mostly to use the same parts more than once. The through hole resistors are there because I forgot to order 200R and 300R units but I might change them to series connected 100R's anyway. With pick and place it helps to keep the parts numbers low so hello series connection. The 2SK170's are just covered with heatshrink and the HV parts are out of stock but I have thousands of them.
January 9, 20179 yr Oops, yeah forgot the HV part and haven't looked at voltage specs for SMD resistors. 2510 doesn't seem to save much real estate over thru-hole. Vey nice job though!Sent from my iPhone using Tapatalk
January 9, 20179 yr They are a bit smaller but I need to series connect to bring down number of values used so space saving is pretty much zero. My goal is to have them assembled for me a thus cut the cost of the amps.
March 6, 20179 yr Hello guys, first time in this thread, learning and working on the carbon. I was pointed to this thread by insanity ! More stuff to read and learn ! Thank you all ! vince
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