--- In "Rich Peet" <> wrote:
>
> DC-DC converter in the normal primitive sense is a Voltage Regulation
> IC. A common one is the LC7805 which is a 5 volt regulator. It can
> handle up to 35 volts input and still hold the output at 5 volts.
> Supply of excess voltage does mean more heat given off by the chip.
> What is impossible to predict is how well that IC is heat sinked to a
> chunk of metal in your device. This is a bit simplified description
> because with digital stuff often a -5 volts is needed as well which is
> a LC7905.
>
> In recent years some manufacturers are getting smart and using this as
> an advertising plus. The SD722 recorder markets their recorder as
> being able to accept 10 to 18 volts. They likely are using a LC7805
> and allowed a 2X safty for voltage spikes and the like. This makes
> further sense considering the recorder powers down at about 6 volts.
> Other manufacturers like RME are allowing either polarity with either
> DC or AC voltages to be supplied to their equipment. This just takes a
> couple more diodes to make a full wave rectifier with input isolation
> and a bit more filtering to work.
>
> Probably a bit more than you wanted to read. My answer is vague but
> boils down to try it at your own risk and if it gets hot then stop that.
>
> Rich Peet
>
> --- In Rob Danielson <type@> wrote:
>
> > No problem. Personally, I've not tried 6 volts yet. Many low voltage
> > DC powered devices use a DC-DC power converter I believe. Figure out
> > a way to secure / add strain-relief for the type "A" connector to the
> > body of the recorder. Its my opinion that inadequate or disrupted
> > powering is behind 95% of the incomplete disk writing occurrences
> > with Hi-MD. Rob D.
> >
>
Thanks Rich Peet
I will keep an eye out for any curls of smoke rising from it.
:-))
Phil
"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
------------------------------------------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/naturerecordists/
<*> Your email settings:
Digest Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/naturerecordists/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
------------------------------------------------------------------------
|