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#powersupply — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #powersupply, aggregated by home.social.

  1. A few impressions of the #repair of my #Apple #PowerBook100 with lots of leaky caps. I had to open the HDD, too, to free the heads that were stuck in parking position. But now it boots again. I have to take a closer look at the LCD, though, the contrast is way too low and the potentiometer has no effect. Maybe the LA5316 is broken, or the leakage spread further than I noticed. I had to clean the side behind the caps in the picture, too. A replacement screen is no option, so I might have to abandon this project when I can't fix it. The #powersupply is beyond repair, and the battery is dead, too.
    #retrocomputing #PowerBook #soldering #recapping #leakycaps #electronics

  2. Continuing on the "Hangell" switching bench power supply I received a few weeks ago...

    I mentioned there was some switching noise visible on the output - not a lot, but more than I'd ideally want. Today I built a filter for its outputs, with a large-ish common-mode inductor/choke rated 10 mH (accurate enough, though my meter says it drops to about half that at 100 kHz) sandwiched between a couple of 1 μF class X2 safety capacitors.

    It seems to have done the trick. Under a moderate load, all the random hash has disappeared, leaving only some spikes at the switching frequency, and those are much smaller than they were before. The RMS noise value is now (barely) under 1 mV, if you believe my cheapish oscilloscope.

    Like a lot of switching supplies, there's a lot of open space in the chassis, so I had room to squeeze the filter inside. I'm pretty happy with it!

    Now to see if this no-brand thing works for any length of time.

    #YumCha #SMPS #PowerSupply #SwitchModeSupply #Hangell #bench #workbench #noise #filter #electronics #hobby

  3. Inside a 3000W Water-Cooled Power Supply with GaN & SiC by ElectrArc240
    - AC/DC: Interleaved Totem-Pole PFC
    - DC/DC: ZVS Phase Shifted Full Bridge

    youtube.com/watch?v=da9GwXX-0Zs
    #PowerSupply #Teardown #WBG

  4. very pleased to have got the little retention post at the blank end of the power supply (on the right front corner) pretty much exactly right the first try ^_^

    the dowel in back (slightly visible here, more visible on the other side) is the other retention clip.

    anyway the switch LED is powered by actual DC power out, the switch controls AC power in so the power supply is completely actually off when it's in "off" position, not just in standby or something. (It uses like 1.4 watts in standby so it's not like it's a lot, but why use any when you don't have to?)

    #PowerSupply #3dPriting #GMRS

  5. DIY Amiga power supply: JuiceBox prototype
    The components needed to assemble the USB-C-powered "JuiceBox" power supply for the Amiga 500, 500+, 600 and 1200 keyboard computers are expected to be available at the end of January.

    A more recent presentation video than the one linked in the web shop at the title link was published on New Year's Eve and can be found on YouTube.

    amiga-news.de/en/news/AN-2026-

  6. FPT exports first chip shipment to Japan

    This milestone marks the initial step towards the goal of exporting FPT-designed chips to the Asia-Pacific market over the next three years. FPT has exported its first commercial chip shipment to a leading Japanese…
    #Japan #JP #JapanNews #AsiaPacificmarket #Commercialshipment #FPT #Highperformanceprinters #japaneseelectronics #news #powermanagement #powersupply #Semiconductorchips
    alojapan.com/1435990/fpt-expor

  7. alojapan.com/1435990/fpt-expor FPT exports first chip shipment to Japan #AsiaPacificMarket #CommercialShipment #FPT #HighperformancePrinters #Japan #JapanNews #JapaneseElectronics #news #PowerManagement #PowerSupply #SemiconductorChips This milestone marks the initial step towards the goal of exporting FPT-designed chips to the Asia-Pacific market over the next three years. FPT has exported its first commercial chip shipment to a leading Japanese electronics company It is

  8. EDIT: car insurance is now only 1 month behind instead of 3! Let's see what else we can do to improve this situation, fedi!

    Atha is bureaucratically and politically disabled from getting a job for a while.
    Inamruzui is partly disabled by POTS and sleep issues. Employment is not a simple matter for them to arrange.

    Atha was at the food bank yesterday and was given two small shopping bags of canned and dried food for hir and Inamruzui to last a month. Let's raise some funds for the rest of their grocery needs! $300 might be a good start for that.

    Let's take another chunk out of Atha's debts! The IRS is being ass, cranking up its non-payment fees. They alone want $860ish. The rest of this part of the request goes to credit cards and car loan and car insurance, with any small change for food.
    #MUTUALAID #URGENTMUTUALAID
    $373.98/$2500 for debts and bills this week!

    Then there's the matter of solar batteries: the #Vulpibus systems struggle to store enough energy to keep running overnight in winter.
    We need to get them AT LEAST 2 more (ideally 10 more) batteries at around $250 a pop. So $500 (ideally $2500)
    Any small change from that goes to cable crimps and mounting hardware.
    They also need battery insulation and heaters!

    Then there's the matter of insulating more of the bus itself. Not only is the insulation itself needed, so is something to hold it all in place. A layer of thin plywood would be good. Also not a cheap matter.

    The bus grows heavier as more is added to it, so care needs to be taken to choose lightweight but sturdy things to fit.

    If you are looking for someone interesting to host in their vehicles on your homestead a while in Colorado, give us a DM.

    paypal.me/athamanatha
    liberapay.com/athamanatha
    ko-fi.com/athakitsune
    patreon.com/vulpinedesigns
    Cashapp $Athamanatha
    Venmo @Athamanatha
    Visa+ +athamanatha.paypal
    Wise, IBAN, ACH, bank transfer, Zelle, Xoom and Throne on DM request.

    If you would like to purchase or send things directly, let us know

    #helpthehouseless
    #sendhelp
    #sendmoney
    #pleasedonate
    #donate
    #donation
    #crowdfund
    #crowdfunding
    #translivesmatter
    #transinneed
    #disabled
    #lgbtqia2S
    #lgbt
    #lgbtq
    #queer
    #queerinneed
    #queermutualaid
    #transmutualaid
    #selfsufficiency
    #offgridliving
    #homestead
    #homesteading
    #schoolie
    #skoolie
    #schoolbusconversion
    #labsonwheels
    #communityfunding
    #commune
    #communesandconvoys
    #fedihelp
    #fedihost
    #help
    #worktogetherandwin
    #makeithappen
    #helpfolkssurvive2025
    #survival
    #winteriscoming
    #winter
    #fuckcapitalism
    #fucktrump
    #fuckmusk
    #solarpower
    #batteries
    #energy
    #solarpunk
    #money
    #moneyhelp
    #currency
    #resistance
    #bethechange
    #TRASHMAGIC
    #queerpunk
    #queerpride
    #homelessnessisnotacrime
    #homeless
    #endhomelessness
    #mutualaidsaveslives
    #cold
    #heating
    #powersupply
    #power
    #electricity
    #youcanhelp

  9. EDIT: car insurance is now only 1 month behind instead of 3! Let's see what else we can do to improve this situation, fedi!

    Atha is bureaucratically and politically disabled from getting a job for a while.
    Inamruzui is partly disabled by POTS and sleep issues. Employment is not a simple matter for them to arrange.

    Atha was at the food bank yesterday and was given two small shopping bags of canned and dried food for hir and Inamruzui to last a month. Let's raise some funds for the rest of their grocery needs! $300 might be a good start for that.

    Let's take another chunk out of Atha's debts! The IRS is being ass, cranking up its non-payment fees. They alone want $860ish. The rest of this part of the request goes to credit cards and car loan and car insurance, with any small change for food.
    #MUTUALAID #URGENTMUTUALAID
    $373.98/$2500 for debts and bills this week!

    Then there's the matter of solar batteries: the #Vulpibus systems struggle to store enough energy to keep running overnight in winter.
    We need to get them AT LEAST 2 more (ideally 10 more) batteries at around $250 a pop. So $500 (ideally $2500)
    Any small change from that goes to cable crimps and mounting hardware.
    They also need battery insulation and heaters!

    Then there's the matter of insulating more of the bus itself. Not only is the insulation itself needed, so is something to hold it all in place. A layer of thin plywood would be good. Also not a cheap matter.

    The bus grows heavier as more is added to it, so care needs to be taken to choose lightweight but sturdy things to fit.

    If you are looking for someone interesting to host in their vehicles on your homestead a while in Colorado, give us a DM.

    paypal.me/athamanatha
    liberapay.com/athamanatha
    ko-fi.com/athakitsune
    patreon.com/vulpinedesigns
    Cashapp $Athamanatha
    Venmo @Athamanatha
    Visa+ +athamanatha.paypal
    Wise, IBAN, ACH, bank transfer, Zelle, Xoom and Throne on DM request.

    If you would like to purchase or send things directly, let us know

    #helpthehouseless
    #sendhelp
    #sendmoney
    #pleasedonate
    #donate
    #donation
    #crowdfund
    #crowdfunding
    #translivesmatter
    #transinneed
    #disabled
    #lgbtqia2S
    #lgbt
    #lgbtq
    #queer
    #queerinneed
    #queermutualaid
    #transmutualaid
    #selfsufficiency
    #offgridliving
    #homestead
    #homesteading
    #schoolie
    #skoolie
    #schoolbusconversion
    #labsonwheels
    #communityfunding
    #commune
    #communesandconvoys
    #fedihelp
    #fedihost
    #help
    #worktogetherandwin
    #makeithappen
    #helpfolkssurvive2025
    #survival
    #winteriscoming
    #winter
    #fuckcapitalism
    #fucktrump
    #fuckmusk
    #solarpower
    #batteries
    #energy
    #solarpunk
    #money
    #moneyhelp
    #currency
    #resistance
    #bethechange
    #TRASHMAGIC
    #queerpunk
    #queerpride
    #homelessnessisnotacrime
    #homeless
    #endhomelessness
    #mutualaidsaveslives
    #cold
    #heating
    #powersupply
    #power
    #electricity
    #youcanhelp

  10. EDIT: car insurance is now only 1 month behind instead of 3! Let's see what else we can do to improve this situation, fedi!

    Atha is bureaucratically and politically disabled from getting a job for a while.
    Inamruzui is partly disabled by POTS and sleep issues. Employment is not a simple matter for them to arrange.

    Atha was at the food bank yesterday and was given two small shopping bags of canned and dried food for hir and Inamruzui to last a month. Let's raise some funds for the rest of their grocery needs! $300 might be a good start for that.

    Let's take another chunk out of Atha's debts! The IRS is being ass, cranking up its non-payment fees. They alone want $860ish. The rest of this part of the request goes to credit cards and car loan and car insurance, with any small change for food.
    #MUTUALAID #URGENTMUTUALAID
    $373.98/$2500 for debts and bills this week!

    Then there's the matter of solar batteries: the #Vulpibus systems struggle to store enough energy to keep running overnight in winter.
    We need to get them AT LEAST 2 more (ideally 10 more) batteries at around $250 a pop. So $500 (ideally $2500)
    Any small change from that goes to cable crimps and mounting hardware.
    They also need battery insulation and heaters!

    Then there's the matter of insulating more of the bus itself. Not only is the insulation itself needed, so is something to hold it all in place. A layer of thin plywood would be good. Also not a cheap matter.

    The bus grows heavier as more is added to it, so care needs to be taken to choose lightweight but sturdy things to fit.

    If you are looking for someone interesting to host in their vehicles on your homestead a while in Colorado, give us a DM.

    paypal.me/athamanatha
    liberapay.com/athamanatha
    ko-fi.com/athakitsune
    patreon.com/vulpinedesigns
    Cashapp $Athamanatha
    Venmo @Athamanatha
    Visa+ +athamanatha.paypal
    Wise, IBAN, ACH, bank transfer, Zelle, Xoom and Throne on DM request.

    If you would like to purchase or send things directly, let us know

    #helpthehouseless
    #sendhelp
    #sendmoney
    #pleasedonate
    #donate
    #donation
    #crowdfund
    #crowdfunding
    #translivesmatter
    #transinneed
    #disabled
    #lgbtqia2S
    #lgbt
    #lgbtq
    #queer
    #queerinneed
    #queermutualaid
    #transmutualaid
    #selfsufficiency
    #offgridliving
    #homestead
    #homesteading
    #schoolie
    #skoolie
    #schoolbusconversion
    #labsonwheels
    #communityfunding
    #commune
    #communesandconvoys
    #fedihelp
    #fedihost
    #help
    #worktogetherandwin
    #makeithappen
    #helpfolkssurvive2025
    #survival
    #winteriscoming
    #winter
    #fuckcapitalism
    #fucktrump
    #fuckmusk
    #solarpower
    #batteries
    #energy
    #solarpunk
    #money
    #moneyhelp
    #currency
    #resistance
    #bethechange
    #TRASHMAGIC
    #queerpunk
    #queerpride
    #homelessnessisnotacrime
    #homeless
    #endhomelessness
    #mutualaidsaveslives
    #cold
    #heating
    #powersupply
    #power
    #electricity
    #youcanhelp

  11. EDIT: car insurance is now only 1 month behind instead of 3! Let's see what else we can do to improve this situation, fedi!

    Atha is bureaucratically and politically disabled from getting a job for a while.
    Inamruzui is partly disabled by POTS and sleep issues. Employment is not a simple matter for them to arrange.

    Atha was at the food bank yesterday and was given two small shopping bags of canned and dried food for hir and Inamruzui to last a month. Let's raise some funds for the rest of their grocery needs! $300 might be a good start for that.

    Let's take another chunk out of Atha's debts! The IRS is being ass, cranking up its non-payment fees. They alone want $860ish. The rest of this part of the request goes to credit cards and car loan and car insurance, with any small change for food.
    #MUTUALAID #URGENTMUTUALAID
    $373.98/$2500 for debts and bills this week!

    Then there's the matter of solar batteries: the #Vulpibus systems struggle to store enough energy to keep running overnight in winter.
    We need to get them AT LEAST 2 more (ideally 10 more) batteries at around $250 a pop. So $500 (ideally $2500)
    Any small change from that goes to cable crimps and mounting hardware.
    They also need battery insulation and heaters!

    Then there's the matter of insulating more of the bus itself. Not only is the insulation itself needed, so is something to hold it all in place. A layer of thin plywood would be good. Also not a cheap matter.

    The bus grows heavier as more is added to it, so care needs to be taken to choose lightweight but sturdy things to fit.

    If you are looking for someone interesting to host in their vehicles on your homestead a while in Colorado, give us a DM.

    paypal.me/athamanatha
    liberapay.com/athamanatha
    ko-fi.com/athakitsune
    patreon.com/vulpinedesigns
    Cashapp $Athamanatha
    Venmo @Athamanatha
    Visa+ +athamanatha.paypal
    Wise, IBAN, ACH, bank transfer, Zelle, Xoom and Throne on DM request.

    If you would like to purchase or send things directly, let us know

    #helpthehouseless
    #sendhelp
    #sendmoney
    #pleasedonate
    #donate
    #donation
    #crowdfund
    #crowdfunding
    #translivesmatter
    #transinneed
    #disabled
    #lgbtqia2S
    #lgbt
    #lgbtq
    #queer
    #queerinneed
    #queermutualaid
    #transmutualaid
    #selfsufficiency
    #offgridliving
    #homestead
    #homesteading
    #schoolie
    #skoolie
    #schoolbusconversion
    #labsonwheels
    #communityfunding
    #commune
    #communesandconvoys
    #fedihelp
    #fedihost
    #help
    #worktogetherandwin
    #makeithappen
    #helpfolkssurvive2025
    #survival
    #winteriscoming
    #winter
    #fuckcapitalism
    #fucktrump
    #fuckmusk
    #solarpower
    #batteries
    #energy
    #solarpunk
    #money
    #moneyhelp
    #currency
    #resistance
    #bethechange
    #TRASHMAGIC
    #queerpunk
    #queerpride
    #homelessnessisnotacrime
    #homeless
    #endhomelessness
    #mutualaidsaveslives
    #cold
    #heating
    #powersupply
    #power
    #electricity
    #youcanhelp

  12. Atha is bureaucratically and politically disabled from getting a job for a while.
    Inamruzui is partly disabled by POTS and sleep issues. Employment is not a simple matter for them to arrange.

    Atha was at the food bank yesterday and was given two small shopping bags of canned and dried food for hir and Inamruzui to last a month. Let's raise some funds for the rest of their grocery needs! $300 might be a good start for that.

    Let's take another chunk out of Atha's debts! The IRS is being ass, cranking up its non-payment fees. They alone want $860ish. The rest of this part of the request goes to credit cards and car loan and car insurance, with any small change for food.
    #MUTUALAID #URGENTMUTUALAID
    $0/$2500 for debts and bills this week!

    Then there's the matter of solar batteries: the #Vulpibus systems struggle to store enough energy to keep running overnight in winter.
    We need to get them AT LEAST 2 more (ideally 10 more) batteries at around $250 a pop. So $500 (ideally $2500)
    Any small change from that goes to cable crimps and mounting hardware.
    They also need battery insulation and heaters!

    Then there's the matter of insulating more of the bus itself. Not only is the insulation itself needed, so is something to hold it all in place. A layer of thin plywood would be good. Also not a cheap matter.

    The bus grows heavier as more is added to it, so care needs to be taken to choose lightweight but sturdy things to fit.

    If you are looking for someone interesting to host in their vehicles on your homestead a while in Colorado, give us a DM.

    paypal.me/athamanatha
    liberapay.com/athamanatha
    ko-fi.com/athakitsune
    patreon.com/vulpinedesigns
    Cashapp $Athamanatha
    Venmo @Athamanatha
    Visa+ +athamanatha.paypal
    Wise, IBAN, ACH, bank transfer, Zelle, Xoom and Throne on DM request.

    If you would like to purchase or send things directly, let us know

    #helpthehouseless
    #sendhelp
    #sendmoney
    #pleasedonate
    #donate
    #donation
    #crowdfund
    #crowdfunding
    #translivesmatter
    #transinneed
    #disabled
    #lgbtqia2S
    #lgbt
    #lgbtq
    #queer
    #queerinneed
    #queermutualaid
    #transmutualaid
    #selfsufficiency
    #offgridliving
    #homestead
    #homesteading
    #schoolie
    #skoolie
    #schoolbusconversion
    #labsonwheels
    #communityfunding
    #commune
    #communesandconvoys
    #fedihelp
    #fedihost
    #help
    #worktogetherandwin
    #makeithappen
    #helpfolkssurvive2025
    #survival
    #winteriscoming
    #winter
    #fuckcapitalism
    #fucktrump
    #fuckmusk
    #solarpower
    #batteries
    #energy
    #solarpunk
    #money
    #moneyhelp
    #currency
    #resistance
    #bethechange
    #TRASHMAGIC
    #queerpunk
    #queerpride
    #homelessnessisnotacrime
    #homeless
    #endhomelessness
    #mutualaidsaveslives
    #cold
    #heating
    #powersupply
    #power
    #electricity
    #youcanhelp

  13. Since the #powersupply for my #IBM #ThinkPad 755C doesn't work reliably and uses a very strange connector, I unsoldered the socket from the internal board. It came on a handy mini #PCB, which I reengineered in @kicad for a barrel jack. It also has connections for a 20V USB-C PD trigger board that I had lying around.
    The boards were manufactured by @aislerhq and fit perfectly. Only the barrel jack was a bit tight since I had to smallen the holes a bit to place it on the board.
    Now I just have to decide which to solder back into the #laptop. Will have to try which fits better inside the hole.
    #KiCad #Aisler #diyelectronics #hardwaremodding #hardwarehacking #ThinkPad755C #retrocomputing #usbcpd #righttorepair

  14. Since the #powersupply for my #IBM #ThinkPad 755C doesn't work reliably and uses a very strange connector, I unsoldered the socket from the internal board. It came on a handy mini #PCB, which I reengineered in @kicad for a barrel jack. It also has connections for a 20V USB-C PD trigger board that I had lying around.
    The boards were manufactured by @aislerhq and fit perfectly. Only the barrel jack was a bit tight since I had to smallen the holes a bit to place it on the board.
    Now I just have to decide which to solder back into the #laptop. Will have to try which fits better inside the hole.
    #KiCad #Aisler #diyelectronics #hardwaremodding #hardwarehacking #ThinkPad755C #retrocomputing #usbcpd #righttorepair

  15. Since the #powersupply for my #IBM #ThinkPad 755C doesn't work reliably and uses a very strange connector, I unsoldered the socket from the internal board. It came on a handy mini #PCB, which I reengineered in @kicad for a barrel jack. It also has connections for a 20V USB-C PD trigger board that I had lying around.
    The boards were manufactured by @aislerhq and fit perfectly. Only the barrel jack was a bit tight since I had to smallen the holes a bit to place it on the board.
    Now I just have to decide which to solder back into the #laptop. Will have to try which fits better inside the hole.
    #KiCad #Aisler #diyelectronics #hardwaremodding #hardwarehacking #ThinkPad755C #retrocomputing #usbcpd #righttorepair

  16. Since the #powersupply for my #IBM #ThinkPad 755C doesn't work reliably and uses a very strange connector, I unsoldered the socket from the internal board. It came on a handy mini #PCB, which I reengineered in @kicad for a barrel jack. It also has connections for a 20V USB-C PD trigger board that I had lying around.
    The boards were manufactured by @aislerhq and fit perfectly. Only the barrel jack was a bit tight since I had to smallen the holes a bit to place it on the board.
    Now I just have to decide which to solder back into the #laptop. Will have to try which fits better inside the hole.
    #KiCad #Aisler #diyelectronics #hardwaremodding #hardwarehacking #ThinkPad755C #retrocomputing #usbcpd #righttorepair

  17. Since the #powersupply for my #IBM #ThinkPad 755C doesn't work reliably and uses a very strange connector, I unsoldered the socket from the internal board. It came on a handy mini #PCB, which I reengineered in @kicad for a barrel jack. It also has connections for a 20V USB-C PD trigger board that I had lying around.
    The boards were manufactured by @aislerhq and fit perfectly. Only the barrel jack was a bit tight since I had to smallen the holes a bit to place it on the board.
    Now I just have to decide which to solder back into the #laptop. Will have to try which fits better inside the hole.
    #KiCad #Aisler #diyelectronics #hardwaremodding #hardwarehacking #ThinkPad755C #retrocomputing #usbcpd #righttorepair

  18. Why would a computer (specifically a #G4 tower) power off when a DVD is put in the drive? I'm trying to figure out what's happening to the power supply in this situation that's causing the behaviour, because it's probably a pretty good clue as to what I did wrong when I rewired it that's also causing it to turn off after running for 15-20 min.

    And it's not the drive itself. I swapped in another one just to eliminate that variable. I'm fairly certain it's something wrong with the way I rewired the ATX power supply to adapt it to Apple's weird non-standard pinout.

    #powermac #g4 #atx #switchmode #powersupply #halp

  19. Why would a computer (specifically a #G4 tower) power off when a DVD is put in the drive? I'm trying to figure out what's happening to the power supply in this situation that's causing the behaviour, because it's probably a pretty good clue as to what I did wrong when I rewired it that's also causing it to turn off after running for 15-20 min.

    And it's not the drive itself. I swapped in another one just to eliminate that variable. I'm fairly certain it's something wrong with the way I rewired the ATX power supply to adapt it to Apple's weird non-standard pinout.

    #powermac #g4 #atx #switchmode #powersupply #halp