Debating if it would be more sane to run 24VDC @ 19A or 48VDC @ 10A to the backplane and regulate it down to 5VDC + maybe some other stuff there or just say fuck it and and pump 5VDC @ 70A to it
June 13, 2025 at 11:36 AM
Debating if it would be more sane to run 24VDC @ 19A or 48VDC @ 10A to the backplane and regulate it down to 5VDC + maybe some other stuff there or just say fuck it and and pump 5VDC @ 70A to it
Donc analyse vite faite, voilà ce qu'on trouve dans cet appareil : une alim linéaire à 3 éléments (dont un transfo torique) qui alimente en 5VDC une platine "switch" 100Mbps... et c'est tout, avec beaucoup de vide. Il n'y a évidemment aucune indication sur la référence du transceiver 100baseTX.
December 11, 2023 at 6:22 PM
Donc analyse vite faite, voilà ce qu'on trouve dans cet appareil : une alim linéaire à 3 éléments (dont un transfo torique) qui alimente en 5VDC une platine "switch" 100Mbps... et c'est tout, avec beaucoup de vide. Il n'y a évidemment aucune indication sur la référence du transceiver 100baseTX.
The real problem are broken devices that do not follow the standard, most commonly devices that use USB as a dumb 5vDC input and don't negotiate PD, those won't work with any c to c cables and require a to c plus a dumb power supply.
February 17, 2025 at 11:36 PM
The real problem are broken devices that do not follow the standard, most commonly devices that use USB as a dumb 5vDC input and don't negotiate PD, those won't work with any c to c cables and require a to c plus a dumb power supply.
I did not, I opened the box and saw it had a 0-5vdc output rather than the 4-20 mA our PLC uses and just instantly knew I fucked it.
May 18, 2025 at 5:10 PM
I did not, I opened the box and saw it had a 0-5vdc output rather than the 4-20 mA our PLC uses and just instantly knew I fucked it.
Hand has srtopped aching so am going to wire up the DIN plug today on that C64 power supply. My PSU only has pins for 6,7 (9VAC) and 2,4 (GND, 5VDC). Online info indicate that 5VDC should be on 5, not 4, though it is optional on 4.
Source: www.c64-wiki.com/wiki/Power_S...
Source: www.c64-wiki.com/wiki/Power_S...
December 16, 2025 at 10:11 AM
Hand has srtopped aching so am going to wire up the DIN plug today on that C64 power supply. My PSU only has pins for 6,7 (9VAC) and 2,4 (GND, 5VDC). Online info indicate that 5VDC should be on 5, not 4, though it is optional on 4.
Source: www.c64-wiki.com/wiki/Power_S...
Source: www.c64-wiki.com/wiki/Power_S...
Homelab V3 Status:
OPNSense box bodged.
Pigtail lead soldered to open 5vdc pads on the motherboard.
Fan shroud printed & blowerfan screwed into place.
Network card seems pretty stable now.
OPNSense box bodged.
Pigtail lead soldered to open 5vdc pads on the motherboard.
Fan shroud printed & blowerfan screwed into place.
Network card seems pretty stable now.
June 30, 2026 at 1:14 AM
Homelab V3 Status:
OPNSense box bodged.
Pigtail lead soldered to open 5vdc pads on the motherboard.
Fan shroud printed & blowerfan screwed into place.
Network card seems pretty stable now.
OPNSense box bodged.
Pigtail lead soldered to open 5vdc pads on the motherboard.
Fan shroud printed & blowerfan screwed into place.
Network card seems pretty stable now.
For when you need to run 80 Pi 5's at full load
April 7, 2025 at 8:39 PM
For when you need to run 80 Pi 5's at full load
Realizing that on a 6 pin connector with a common ground I can cram in:
- 120vac @8a switched
- vdc common ground
- 24vdc @300w switched
- 2x 5vdc @50ma PWM
which gives me SO MANY TOOLEND OPTIONS
- 120vac @8a switched
- vdc common ground
- 24vdc @300w switched
- 2x 5vdc @50ma PWM
which gives me SO MANY TOOLEND OPTIONS
September 19, 2025 at 7:26 PM
Realizing that on a 6 pin connector with a common ground I can cram in:
- 120vac @8a switched
- vdc common ground
- 24vdc @300w switched
- 2x 5vdc @50ma PWM
which gives me SO MANY TOOLEND OPTIONS
- 120vac @8a switched
- vdc common ground
- 24vdc @300w switched
- 2x 5vdc @50ma PWM
which gives me SO MANY TOOLEND OPTIONS
wait. you can be both 0-5vdc and 4-20mA at the same time. if the plc does 5 volt logic a 4-20 mA cap sounds roughly right. voltage and amperage should align on spec
May 18, 2025 at 5:12 PM
wait. you can be both 0-5vdc and 4-20mA at the same time. if the plc does 5 volt logic a 4-20 mA cap sounds roughly right. voltage and amperage should align on spec
Best 120V AC to 5V DC | How This Tiny Module Works
🛒 Product link in the description — check the latest price & specs: s.click.aliexpress.com/e/_c3taXkdP
#Shorts #HLK10M05 #HiLink #PowerSupply #ACDC #5VDC #Electronics #IoT #SmartHome #DIYElectronics #Automation #OHBPowerGrid
🛒 Product link in the description — check the latest price & specs: s.click.aliexpress.com/e/_c3taXkdP
#Shorts #HLK10M05 #HiLink #PowerSupply #ACDC #5VDC #Electronics #IoT #SmartHome #DIYElectronics #Automation #OHBPowerGrid
September 18, 2026 at 5:23 PM
Best 120V AC to 5V DC | How This Tiny Module Works
🛒 Product link in the description — check the latest price & specs: s.click.aliexpress.com/e/_c3taXkdP
#Shorts #HLK10M05 #HiLink #PowerSupply #ACDC #5VDC #Electronics #IoT #SmartHome #DIYElectronics #Automation #OHBPowerGrid
🛒 Product link in the description — check the latest price & specs: s.click.aliexpress.com/e/_c3taXkdP
#Shorts #HLK10M05 #HiLink #PowerSupply #ACDC #5VDC #Electronics #IoT #SmartHome #DIYElectronics #Automation #OHBPowerGrid
Three power supplies, 14vac, 3.3vdc, 5vdc, all fused and switched individually so there's ample room for future electrical scenery. The goal is to have it running autonomously, with up to six trains on four lines. All the wiring I scavenged from a discarded Corolla harness and cost nothing.
April 11, 2026 at 1:53 PM
Three power supplies, 14vac, 3.3vdc, 5vdc, all fused and switched individually so there's ample room for future electrical scenery. The goal is to have it running autonomously, with up to six trains on four lines. All the wiring I scavenged from a discarded Corolla harness and cost nothing.
230VAC deutlich effektiver als 5VDC😏
June 17, 2026 at 5:29 AM
230VAC deutlich effektiver als 5VDC😏
[新商品] Pololu 5VDCリレー付SPDTリレーボード（トップコネクト型） ¥1,430 https://ssci.to/10862 #ssci_new
December 18, 2025 at 8:02 AM
[新商品] Pololu 5VDCリレー付SPDTリレーボード（トップコネクト型） ¥1,430 https://ssci.to/10862 #ssci_new
the industrial boxes want +19VDC @ 3A peak and my disk array and tape drive want +5VDC @ 10A peak.
the basic idea is I have DC/DC converters that turn +10~14VDC into the required voltages and put a LiFePO4 battery on the input rails. mains failure trips a watchdog and the battery is already to go
the basic idea is I have DC/DC converters that turn +10~14VDC into the required voltages and put a LiFePO4 battery on the input rails. mains failure trips a watchdog and the battery is already to go
May 8, 2026 at 7:27 AM
the industrial boxes want +19VDC @ 3A peak and my disk array and tape drive want +5VDC @ 10A peak.
the basic idea is I have DC/DC converters that turn +10~14VDC into the required voltages and put a LiFePO4 battery on the input rails. mains failure trips a watchdog and the battery is already to go
the basic idea is I have DC/DC converters that turn +10~14VDC into the required voltages and put a LiFePO4 battery on the input rails. mains failure trips a watchdog and the battery is already to go
The ripple problem applies to all of those modern PSUs, ie their 5VDC rail. The 9VAC is mostly not critical, IF it is produced by a transformer (producing it "digitally" is an art by itself).
January 14, 2025 at 6:03 PM
The ripple problem applies to all of those modern PSUs, ie their 5VDC rail. The 9VAC is mostly not critical, IF it is produced by a transformer (producing it "digitally" is an art by itself).
Careful little buddy, you don't want none of that +5vdc
September 13, 2023 at 12:45 AM
Careful little buddy, you don't want none of that +5vdc
usb c is 5vdc unless you configure resistors to request higher voltages and you have a charger that supports it
August 30, 2026 at 6:17 AM
usb c is 5vdc unless you configure resistors to request higher voltages and you have a charger that supports it
Repaired some old Commodore parts....it is a C1541. The 5VDC Voltage Regulator just died.
December 24, 2025 at 10:47 AM
Repaired some old Commodore parts....it is a C1541. The 5VDC Voltage Regulator just died.
Another reason to make repairs clean and tidy? The next person to work on it may be yourself.
Cut a few traces that I realized later that I could've left intact, so I needed to patch those back together.
Now she's got a more conventional voltage regulator for the +5VDC.
Cut a few traces that I realized later that I could've left intact, so I needed to patch those back together.
Now she's got a more conventional voltage regulator for the +5VDC.
June 13, 2025 at 9:32 PM
Another reason to make repairs clean and tidy? The next person to work on it may be yourself.
Cut a few traces that I realized later that I could've left intact, so I needed to patch those back together.
Now she's got a more conventional voltage regulator for the +5VDC.
Cut a few traces that I realized later that I could've left intact, so I needed to patch those back together.
Now she's got a more conventional voltage regulator for the +5VDC.
With both of those working, here's a design for a version that has a 5V booster with the TPS61023 (www.adafruit.com/product/4654), which gives a nice clean 1A with a small bill of materials. now you can use USB, DC, or solar to charge your favorite lipoly or liion chip and get 5V output.
Adafruit MiniBoost 5V @ 1A - TPS61023
This adorable little board will come in very handy whenever you need a good amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 2-5VDC on ...
www.adafruit.com
November 5, 2024 at 3:44 AM
With both of those working, here's a design for a version that has a 5V booster with the TPS61023 (www.adafruit.com/product/4654), which gives a nice clean 1A with a small bill of materials. now you can use USB, DC, or solar to charge your favorite lipoly or liion chip and get 5V output.
Boards! This is this year's entry into my longstanding fixation on "drive a lot of smartleds using RS-485 for data, and DC cabling, to step 18VDC down to 5VDC using a DC/DC converter".
This year is extra small (the same size as a 4x6 LEGO plate).
This year is extra small (the same size as a 4x6 LEGO plate).
December 4, 2023 at 3:17 PM
Boards! This is this year's entry into my longstanding fixation on "drive a lot of smartleds using RS-485 for data, and DC cabling, to step 18VDC down to 5VDC using a DC/DC converter".
This year is extra small (the same size as a 4x6 LEGO plate).
This year is extra small (the same size as a 4x6 LEGO plate).
I forgot, it also used 8" floppies. And a terminal. Mine had two. I never turned on the second one. Eventually the actual hard disks themselves were used for target practice. You could almost weld with the regulated 5VDC supply.
August 9, 2026 at 3:49 PM
I forgot, it also used 8" floppies. And a terminal. Mine had two. I never turned on the second one. Eventually the actual hard disks themselves were used for target practice. You could almost weld with the regulated 5VDC supply.