What is the ELEKTOR magazine? Is it available in the US?


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Friedel Bruening
Sent: Thursday, November 22, 2001 11:45 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: Digitally-controlled variable voltage regulator


There is complete PWS project in the last ELEKTOR Magazine, using a 16F84
doing all the
job, voltage and current indication, setpoints for V and A, RS232,
PC-Software, HEX-CODE,

Friedel


At 02:03 a.m. 22/11/01 -0800, you wrote:
>Hey All,
>
>         I am trying to construct a powersupply that will be controlled by
> a pic. I
>have decided to us the good'ol LM317 as the regulator. I figure that I can
>use a D/A converter to allow a PIC to control the biasing of a mosfet, used
>as a variable resistor, to adjust the voltage. Another way I figure is to
>use a digital potentiometer, only problem is that no greater than 5 volts
>can be applied to any one pin or pass more than 1 or 2 mA. Anyone got any
>ideas? Am I making this harder than it should be? How do people like HP do
>it? (I know HP power-supplies cost an arm and a leg...)
>
>         I am trying to get 0.1V resolution on the output.
>
>James Burkart
>jamesburkart@yahoo.com
>
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