UK Mobile Phones (uk.telecom.mobile) Mobile telephone equipment and networks.

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Old January 3rd 19, 03:32 PM posted to uk.telecom.mobile
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Posts: 387
Default USB-C cables

On 03/01/2019 12:51, Chris Green wrote:
Brian Gregory wrote:
On 03/01/2019 07:43, Tim+ wrote:
Dunno about tablets but the main advantage of USB C on my phone is much
more rapid charging when used with the supplied “Dash” charger. You would
lose this advantage if you used a micro USB cable.


Why?

How would the phone or charger even know you were using a micro USB
cable and an adapter?

By the various interconnections etc. inside the connectors. Even with
just micro USB there are different 'types' of connector, with USB C
there are even more coding possibilites using signals on the connector
pins.

Exactly - there are cheap USB1/2 cables that just have the power lines
connected, then there are those that have the data lines connected, and
for USB 3 there are more/different data lines that can control things -
in particular with the OnePlus dash charging cables there are additional
electronics in the cables to moderate the power supplied.

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Old January 3rd 19, 03:44 PM posted to uk.telecom.mobile
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First recorded activity by MobileBanter: Jun 2015
Posts: 287
Default USB-C cables

On Thursday, 3 January 2019 15:32:04 UTC, Someone Somewhere wrote:
On 03/01/2019 12:51, Chris Green wrote:
Brian Gregory wrote:
On 03/01/2019 07:43, Tim+ wrote:
Dunno about tablets but the main advantage of USB C on my phone is much
more rapid charging when used with the supplied “Dash” charger. You would
lose this advantage if you used a micro USB cable.

Why?

How would the phone or charger even know you were using a micro USB
cable and an adapter?

By the various interconnections etc. inside the connectors. Even with
just micro USB there are different 'types' of connector, with USB C
there are even more coding possibilites using signals on the connector
pins.

Exactly - there are cheap USB1/2 cables that just have the power lines
connected, then there are those that have the data lines connected,


never even heard of that sort!

and
for USB 3 there are more/different data lines that can control things -
in particular with the OnePlus dash charging cables there are additional
electronics in the cables to moderate the power supplied.


USB started off as a simple replacement for V.24 serial comms (up to 25 lines and myriad protocols). Just four lines - power, ground, Tx and Rx, but of course it had to get more complicated...


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Old January 14th 19, 12:13 AM posted to uk.telecom.mobile
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First recorded activity by MobileBanter: Apr 2018
Posts: 9
Default USB-C cables

On 03/01/2019 12:51, Chris Green wrote:
Brian Gregory wrote:
On 03/01/2019 07:43, Tim+ wrote:
Dunno about tablets but the main advantage of USB C on my phone is much
more rapid charging when used with the supplied “Dash” charger. You would
lose this advantage if you used a micro USB cable.


Why?

How would the phone or charger even know you were using a micro USB
cable and an adapter?

By the various interconnections etc. inside the connectors. Even with
just micro USB there are different 'types' of connector, with USB C
there are even more coding possibilites using signals on the connector
pins.


So the adapter would tell the device?

--

Brian Gregory (in England).


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