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Darren
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Joined: 11/07/2002 14:36:40
Posts: 23848
Location: Hampshire, UK
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 Posted: Sat May 15, 2004 8:04 am Post subject: |
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| a4ace wrote: | hmmm... it's difficult to describe.
dave, can i send pictures and perhaps can be added to reader mounts?  |
Yep, send them in and we'll add them and stop calling me Dave 
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Darren Griffin |
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Darren
Frequent Visitor
Joined: 11/07/2002 14:36:40
Posts: 23848
Location: Hampshire, UK
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| Posted: Sat May 15, 2004 8:09 am Post subject: |
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| a4ace wrote: | | i really don't understand why tomtom is no longer supplying the cradle. |
And neither do we, all the problems users reported with units dying, charge issues etc all ocurred when using the cigarette lighter lead, hard wired cradle installs seemed to be unaffected and the cradle did help TomToms BT solution stand out from the crowd.
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Darren Griffin |
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a4ace
Regular Visitor
Joined: 19/08/2003 21:28:03
Posts: 219
Location: Geneva, Switzerland
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| Posted: Sat May 15, 2004 8:29 am Post subject: |
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| Darren wrote: | | a4ace wrote: | hmmm... it's difficult to describe.
dave, can i send pictures and perhaps can be added to reader mounts? |
Yep, send them in and we'll add them and stop calling me Dave |
it's here. 
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tomtom 940 live/tt active dock holder/tt rds-tmc traffic receiver usb |
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MrT
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Joined: Nov 14, 2003
Posts: 2143
Location: Surrounded by A1, M1 & M25
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| Posted: Sat May 15, 2004 12:45 pm Post subject: |
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The cradle connected at 12V is very unlikely to cause any problems as it has a good standard regulator built into it. The regulator is a LM2575T-5 which supplies 5V at 1amp and the guaranteed tolerance is +-0.2V over an input range of 7V-40V. At 12V the tolerance is +-0.1V.
At 5V input the cradle is only a connector with no regulation.
The dual cigar lighter lead that TomTom used to supply also uses the same regulator and has a slightly larger inductor to reduce surges.
It is far more likely that the mains adaptor transformer has poorer regulation. It is sealed and I am not going to break it to find out how it works. |
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