PowerBook 160 USB-C PD Adapter
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Adapt 15V USB-C Power Delivery to 7.5V in a barrel jack for your Apple PowerBook 160, or other PowerBook laptop!
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Updated at source:
Model information
- Source
- Printables
- Category
- Computers
- License
- Creative Commons — Attribution — Share Alike
This adapts 15V, 2.0A USB-C Power Delivery power supplies to the 7.5V, 2.2A barrel jack on the PowerBook 160. I would assume that it works on other PowerBooks, but I haven't tested it. Of course, this can all be adapted to supply different voltages and different connectors - I just happened to build mine for a PowerBook 160.
Bill of Materials
To build it, you'll need:
- USB-C 15V Trigger Board
- Step Down Converter
- 2.1x5.5 mm Pigtail (should use the 6 mm cable variant)
- 10mm M3 screws
Annoyingly, with these links you can't build just one, so consider doing a group buy with some friends or selling the extras. You can optionally purchase a USB-C power meter to see what your adapter is outputting.
Tested USB-C Adapters
Any USB-C adapter that supports 15V or 9V with at least 2A should work. The trigger board will request 15V, and if not available, will step down to the next available voltage. I would recommend confirming the output voltage before connecting to your PowerBook, and then re-resting after connecting the PowerBook to be sure that everything is correct.
- Apple 35W Dual USB-C Adapter, Model A2571
- Ships with M2 and M3 13" MacBook Air
- Outputs 15V at 15V, 2.33A
- Apple 30W USB-C Power Adapter, Model A2164
- Ships with M2 13" MacBook Air
- Outputs 15V at 2.0A
- Apple 20W Adapter, Model A2935
- Ships with the 10th generation standard iPad
- Outputs max 9V, 2.22A
- Despite not supporting 12V, seems to work great with the PowerBook 160
- The Step Down Converter seems to maintain an even 7.5V, even though the input voltage is lower
- Ventev Wall Charger 585920
- Supports 15V at 3.0A
- Anker PowerCore 20100 Nintendo Switch Edition
- 15V at 2.0A
Assembly and Configuration
- Solder together the boards
- Place them in the enclosure
- Connect a power supply
- Measure the output voltage, and adjust the potentiometer until the output is approximately 7.5 volts
- Connect it to your PowerBook, and boot it up
- Now that the adapter is under a normal load, carefully fine-tune the voltage to 7.5 with 1/16th turns
- Shut down the PowerBook, remove power, and install the top half of the case
Revision History
v1
- Initial release
v2 (2025-02-06)
- Relaxed tolerances
- Added hold downs for buck converter board
- Added 12 mm x 50 mm label space to one side
- Added 4, 4.5, 5, 5.5, 6, 6.5, and 7 mm power cable variants, so you can print the right one for your specific cable