- The 280 pound capacitor - 3 Updates
- (OT) Would you pay $99.99 for a USED 1gb Flash Drive - 1 Update
| Stephen Wolstenholme <steve@easynn.com>: Jun 09 03:39PM +0100 On Thu, 8 Jun 2017 17:28:02 -0000 (UTC), Cursitor Doom >drain application? >If I can source a generic electrolytic of the same spec or better for < >30 quid, why should I not use that instead of the bespoke replacement?? It will be a limited production component that is no longer made and the remaining stock has a very high price. Replace it with an electrolytic of the same capacitance and voltage rating. The extra terminals are probably connections to internal parallel capacitors. I once worked on a power supply that had a 600 uF capacitor but when it went I discovered it was made of 8 x 100 uF in parallel all in the same encapsulation with two terminals. I assume the 600 mark on the case was a misprint. Steve -- Neural Network Software for Windows http://www.npsnn.com |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 09 09:16AM -0700 On Thu, 8 Jun 2017 17:28:02 -0000 (UTC), Cursitor Doom >https://www.flickr.com/photos/128859641@N02/35050368241/in/dateposted-public/ 47,000 uF 16v. You should be able to find that in a physically smaller package. <http://www.ebay.com/sch/i.html?_nkw=47000+uf+16v> Carefully remove the base from the capacitor, preserving only the base and the can. If you're really careful, you might be able to also save the vinyl insulator. Tear out the guts and throw it away. Install the replacement physically smaller capacitor inside the can, connecting the capacitor leads to the base to match the original. Solder it back onto the PCB and you're done. If you don't care if it looks like the original, forget the aforementioned process and just solder the replacement cap to the PCB in place of the can in any manner that will fit. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
| "Tim Williams" <tiwill@seventransistorlabs.com>: Jun 09 11:26AM -0500 "Bert Hickman" <bert-hickman@comcast.net> wrote in message news:Wvydna-H_99eBafEnZ2dnUU7-anNnZ2d@giganews.com... >> a bowling ball and was about the same size > Our 170 pound energy discharge capacitors, each 70 uF at 12 kVDC: > http://capturedlightning.com/photos/Energy_Discharge_Caps/MAXCAP3.JPG I've worked with capacitors bigger than that, although I think they were in sections so maybe it's not technically true to say "bigger capacitor" (singular). :^) Ratings were around 100s uF, 2000V, lots of amps. Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com |
| Ralph Mowery <rmowery28146@earthlink.net>: Jun 09 10:08AM -0400 In article <nm4ljc1m4ffosvrrfvbl2ce7oon119njif@4ax.com>, oldschool@tubes.com says... > and I dump photos to my computer at least once every 3 months. > Anyhow, in the case of *bootable* flash drives, it appears that > computers DO have problems with "too large" flash drives. I paid about $ 600 for 2 of the 5 1/4 inch floppy drives and electronics to go in a TRS-80 computer. As long ago as that was, it was probably well over $ 1000 in todays money. Some computers and othe devices that take storage devices do have probles with large 'cards'. Same with devices where I worked had problems with newer computers. We programed many devices with a laptop. As the computers got faster, the old devices would not program. The timming loop timmed out before the old device could send or receive the data. I keep a couple of old laptops around the house to program some of my things that the software is only in dos or I need some of the MCICA or whatever memory card slots. |
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