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Posts Tagged ‘USB power’

Building the ultimate USB power distribution system

Thursday, February 21st, 2019

Dr. Scott M. Baker published a new build: My goals include: 1. The ability to switch each device on/off with a rocker or toggle switch 2. Current limiting capability via a fuse or similar device 3. Overvoltage protection 4. Visual indicator (LED) of operational status 5. Multiple independent outlet See...

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Posted in DIY, USB | No Comments »

App note: Charging batteries using USB power

Sunday, February 19th, 2017

Fairly old application note from MAXIM Integrated about getting out power from USB ports. Link here (PDF) Many devices with rechargeable batteries use USB power to recharge the batteries while they are connected. This application note describes the power available from USB and how it can be used to charge...

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App note: Enable automotive USB power – Managing the increasing currents, longer cables, and tight portable-device specifications

Saturday, March 22nd, 2014

Here's an application note from Maxim:  Enable automotive USB power - Managing the increasing currents, longer cables, and tight portable-device specifications This application note discusses the challenges of rapid USB charging of today’s portable devices (PDs) in an automobile. The PDs may not charge quickly or charge at all, especially...

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FT230X charger detection investigation

Tuesday, November 12th, 2013

Baoshi writes: I bought some FT230X (FT230XS) USB-USART bridge chip recently for a new design.  FT230X is not only cheaper than the traditional FT232RL, but also offers a new fancy “USB charger detection” function. This interests me because I’m quickly running out of desk space and power socket. I wish...

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Posted in testing | 2 Comments »

Web platform USB power supply

Tuesday, March 9th, 2010

See the latest version on the documentation wiki. Markus Gritsch added a USB power supply jumper to his web platform: I found it convenient to be able to power the Web Platform using my iPhone USB charger and a normal USB cable.  It is also convenient when presenting the board...

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Posted in web platforms | 1 Comment »

Recent Comments

  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
  • jose: Part removal described here is pure butchery, the cheapest hot air station will do a fast and clean job removing the QFP, heat air to...
  • Cody: Yes please
  • Marko: armature -> amateur
  • Crawford: Dibs,