JoseA Posted October 9, 2020 Report Share Posted October 9, 2020 Thanks JoaMat Quote Link to comment Share on other sites More sharing options...
JoseA Posted October 9, 2020 Report Share Posted October 9, 2020 I was checking my second order to Mouser (last one) and verifying everything, I discovered that all my LT1021 are 7v instead of 10v (GR78xx, GR79xx and T2) Should I replace them with 10V one or I can let them ? I will have to change only R2=2.29K to get 15V Quote Link to comment Share on other sites More sharing options...
Kerry Posted October 9, 2020 Report Share Posted October 9, 2020 I like the 7v version for the GRLV supplies, but it doesn’t matter. From a noise perspective, I think they’re slightly better. If you’re talking about the T2 power supplies, I believe they need to be 10V. You could potentially recalculate all of the set resistors. Quote Link to comment Share on other sites More sharing options...
starcat Posted February 19, 2021 Report Share Posted February 19, 2021 Guys, any leftover boards available? Would be interested in 2 sets of PS boards and 1 mini T2: 4 grhv, 2 grlv78xx, 2 grlv79xx, 2 main board, 1 mini t2 please Quote Link to comment Share on other sites More sharing options...
JoaMat Posted February 20, 2021 Report Share Posted February 20, 2021 @starcat I have boards. Ping me if still interested. Location Sweden. 1 Quote Link to comment Share on other sites More sharing options...
waltzingbear Posted May 5, 2021 Report Share Posted May 5, 2021 interested in getting a set of the Kerry psu and modules. either preassembled or bare board would be fine. 2X GRHV 1XGR78xx 1XGR79xx Cheers and TIA Alan Quote Link to comment Share on other sites More sharing options...
mwl168 Posted May 6, 2021 Author Report Share Posted May 6, 2021 On 5/4/2021 at 7:41 PM, waltzingbear said: interested in getting a set of the Kerry psu and modules. either preassembled or bare board would be fine. 2X GRHV 1XGR78xx 1XGR79xx Cheers and TIA Alan PM me if you are still looking for boards. Also, you need a base board to assemble a PSU unless you have or plan to fabricate your own. Quote Link to comment Share on other sites More sharing options...
starcat Posted May 11, 2021 Report Share Posted May 11, 2021 On 3/25/2019 at 2:08 AM, Kerry said: Here's some pics of the power supply inside a Canon build... Hi @Kerry, nice build as always. Mind sharing the p/n for the white clips holding the pot cables to the PCB spacers? Thanks a lot! 1 Quote Link to comment Share on other sites More sharing options...
Kerry Posted May 11, 2021 Report Share Posted May 11, 2021 They're just Nylon R Type Cable Clamp Fasteners. I got my last batch from Amazon. I tend to use 1/8, 3/16 & 1/4" sizes. 1 Quote Link to comment Share on other sites More sharing options...
cspirou Posted June 20, 2021 Report Share Posted June 20, 2021 Haven't been as active on here lately and I can't believe I missed this GB. Anyway, good work on this everybody Quote Link to comment Share on other sites More sharing options...
audiostar Posted August 15, 2022 Report Share Posted August 15, 2022 (edited) Looks like MMBT3904,215 and MMBT3906,215 from Nexperia are a good replacement for the MMBT3904 and MMBT3906 BJTs from Onsemi. Edited August 16, 2022 by audiostar Quote Link to comment Share on other sites More sharing options...
audiostar Posted August 15, 2022 Report Share Posted August 15, 2022 Lots of the parts like OPA134UA/2K5 or the voltage references LT1021DCS8-10#PBF or LT1021DCS8-7#PBF are available end of 2023. That's just insane and getting worse, like the world has run out of parts! 1 Quote Link to comment Share on other sites More sharing options...
audiostar Posted February 25, 2023 Report Share Posted February 25, 2023 @Kerry Would it be possible to substitute the OPA134UA/2K5 that's used in the PSU with something else that's easier available? Mouser keeps pushing it out, now scheduled for 2024! Quote Link to comment Share on other sites More sharing options...
boinger Posted February 27, 2023 Report Share Posted February 27, 2023 delete Quote Link to comment Share on other sites More sharing options...
Kerry Posted February 27, 2023 Report Share Posted February 27, 2023 On 2/25/2023 at 5:45 AM, audiostar said: @Kerry Would it be possible to substitute the /2K5 that's used in the PSU with something else that's easier available? Mouser keeps pushing it out, now scheduled for 2024! Yes, you can substitute something else in for the OPA134UA. I did a quick search and found OPA1655DR which is in stock. You'll need to test it to make sure it functions properly. Good luck and post back your findings. PS I'm running on very little sleep, so double check the operating parameters of the OPA1655 against OPA134. 1 Quote Link to comment Share on other sites More sharing options...
audiostar Posted July 3, 2023 Report Share Posted July 3, 2023 Any good substitute for the shottky diodes MBRA140T3G in D3,D4,D5,D6? I could find this one: https://www.mouser.com/ProductDetail/750-CDBA140-G, it is in a different package but pretty much same length. Forward voltage 500mV instead of 710mV for the MBRA140T3G. Quote Link to comment Share on other sites More sharing options...
Pars Posted July 3, 2023 Report Share Posted July 3, 2023 Digikey shows a VIshay SS14-E3/5AT or a Diodes Inc. B140-13-F as direct replacements. 2 Quote Link to comment Share on other sites More sharing options...
audiostar Posted July 3, 2023 Report Share Posted July 3, 2023 Thanks, Pars. Quote Link to comment Share on other sites More sharing options...
audiostar Posted August 6, 2023 Report Share Posted August 6, 2023 Anyone by chance has 4x DN2540N8-G for me? Mouser showing mid of September for these. 1 Quote Link to comment Share on other sites More sharing options...
sorenb Posted August 6, 2023 Report Share Posted August 6, 2023 24 minutes ago, audiostar said: Anyone by chance has 4x DN2540N8-G for me? Mouser showing mid of September for these. PM me your address, I have plenty 1 Quote Link to comment Share on other sites More sharing options...
audiostar Posted January 7 Report Share Posted January 7 Hi Gang, wish you All a happy, joyful and prosperous New Year! Any left unused boards for the mini T2 and Kerry's PSU, please let me know. I would need a set. Quote Link to comment Share on other sites More sharing options...
mwl168 Posted January 7 Author Report Share Posted January 7 I’ll pm you. 1 Quote Link to comment Share on other sites More sharing options...
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