Author Topic: USB:- volts/amps?  (Read 248 times)

Online Phase

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USB:- volts/amps?
« on: February 28, 2017, 04:42:56 PM »
Had an external power supply made up for the DX10 PRO3A 5.7V, 2.1mA.

What was the USB from laptop delivering? Anybody know?

Offline Rotten Johnny

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Re: USB:- volts/amps?
« Reply #1 on: February 28, 2017, 04:53:22 PM »
5V .5A
Audiophile: There is almost no other group that prides themselves more on wasting good money on utterly worthless ****, and then trying to furiously blow smoke up their own ass to justify it.

Free your mind...and your ass will follow.

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Re: USB:- volts/amps?
« Reply #2 on: February 28, 2017, 05:40:05 PM »
[imghttp://[/img]

5V 2.1A

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Re: USB:- volts/amps?
« Reply #3 on: February 28, 2017, 05:40:55 PM »

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Re: USB:- volts/amps?
« Reply #4 on: February 28, 2017, 05:46:45 PM »
[imghttp://[/img]

Also had Garth make up a RG59 75ohm rca/bnz cable.

Offline pwatts

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Re: USB:- volts/amps?
« Reply #5 on: February 28, 2017, 08:30:19 PM »
The current delivery is negotiated between the host and device. Max is 0.9A for USB3. Some hosts cut cost and just tie the main 5V to the USB plug but that's rare (and dangerous)

Offline chrisc

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Re: USB:- volts/amps?
« Reply #6 on: March 08, 2017, 05:29:56 PM »
The Crabtree and Gewiss 15A sockets with a built in twin USB socket supply 2 amps at 5 volts