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RE: Electronics Question
- To: <ukha_d@xxxxxxx>
- Subject: RE: Electronics Question
- From: "Dr John Tankard" <john@xxxxxxx>
- Date: Sun, 24 Feb 2002 11:19:23 -0000
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Title: Message
Sorry
Keith, I did not get your reply, I have only just spotted it on the web,
looks
like Yahoo is playing up
John
The
MAX232 I posted to the list yesterday includes voltage doublers and
converters
all in a single 16pin DIP.
In
fact I was building a test board last night with a MAX232 and PIC
16F628.
Keith
> Hi,
>
> I'd
like to take a data signal clocked at 1200 Baud, from a battery
>
powered deivce (power is 3x1.5V AAA) for connection to a
> serial
input at
> either 5V or RS232 levels, any suggestions on the best
way
to do this.
>
> Note I only need to read the data.
I
assume the question you are asking is how do I get the required
voltage
to run rs232 ? If that is what you want then you could look at a
DC-DC
converter, mamim do them from memory
http://dbserv.maxim-ic.com/PowerSupplies.cfm
Or
if you don't heed a higher voltage for any other parts of you design
you
could look at a rs232 driver with voltage conversion built in.
Again
Maxim do loads of theses but I can't remember the part numbers,
take a
look on the same site under
interface.
John
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information:
http://www.automatedhome.co.uk
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