> -----Original Message-----
> From: Jan-Erik Soderholm [SMTP:jan-erik.soderholm@telia.com]
> Sent: Monday, November 18, 2002 9:35 AM
> To:   PICLIST@mitvma.mit.edu
> Subject:      Re: [EE]: PSU, 9805 and a diod.
>
> OK. Thanks Mike.
>
> So it would be OK to just short the diod (or to replace it with
> a blank wire) then ?
>
> Jan-Erik.
>
> >> Can I simply short the diod to lower it to aprox 5 volts ?
> >> Or could this have something to do with the fact that there is
> >> *two* 9805 connected together (pin 1-1, 2-2 and 3-3) ?
> >>
> >Putting diodes in the common leg is a popular way to increase the voltage
> of
> >these fixed voltage regulators, and this would explain the voltage
> increase.
> >The two parallel devices is no doubt an attempt to double the output
> current
> >capability, although it's not really the recomended technique.
> >
> >Mike
>
Yes, that will reduce the output voltage by one diode drop (~0.7v)

Mike

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