[MLB-WIRELESS] N-type adapters, 5V regs on eBay

[Tom Parker]

Rik,

Yeah, but the TO-220 has much less metal on it so needs a bigger heatshink
and will carry less current without a heatsink.  How hot they get depends
upon the input voltage too (in addition to load current).  If you put 12V in
then 12 - 5 = 7V has to go somewhere (heat), if you put 9V in 9 - 5 = 4V
then a lot less heat will be generated.

The TO-220 also has a smaller surface area so the heat must pass over a
smaller surface too.

Cheers,
Tom

ps. the auction is good value, but 100 is too many!!


----------------------------------
Tom Parker tparker at netspace.net.au
http://www.wiresncode.com/projects



> -----Original Message-----
> From: rik [mailto:mibz at optushome.com.au]
> Sent: Sunday, 16 February 2003 12:47 PM
> To: tparker at netspace.net.au
> Subject: Re: [MLB-WIRELESS] N-type adapters, 5V regs on eBay
>
>
> they say they both do 1.5 amps
>
>
> ----- Original Message -----
> From: "Tom Parker" <tparker at netspace.net.au>
> To: <melbwireless at wireless.org.au>
> Sent: Sunday, February 16, 2003 12:24 PM
> Subject: RE: [MLB-WIRELESS] N-type adapters, 5V regs on eBay
>
>
> >
> > 100 regulators is a lot of POE boxen!!!
> >
> > Here are some one off retail reference prices to compare.
> >
> > TO-220 (same as auction).
> >
> http://www.rockby.com.au/catresults.cfm?searchkey=7805&searchbtn=S
> ubmit&stoc
> > k_no=23842
> >
> > TO-3 (carry more current without heatsink)
> >
> http://www.rockby.com.au/catresults.cfm?searchkey=7805&searchbtn=S
> ubmit&stoc
> > k_no=23843
> >
> > Rockby are about 5 mins from Monash Uni.
> >
> > Cheers,
> > Tom
> >
> > ----------------------------------
> > Tom Parker tparker at netspace.net.au
> > http://www.wiresncode.com/projects
> >
> >
> >
> > > -----Original Message-----
> > > From: owner-melbwireless at wireless.org.au
> > > [mailto:owner-melbwireless at wireless.org.au]On Behalf Of Clae
> > > Sent: Sunday, 16 February 2003 12:04 PM
> > > To: melbwireless at wireless.org.au
> > > Subject: Re: [MLB-WIRELESS] N-type adapters, 5V regs on eBay
> > >
> > >
> > > Note that these just adapt an N-type connector to another N-type
> > > connector, male or female, they aren't the bare N-types you can add
> > > to the end of a cable....
> > >
> > > The 5v regs could be useful for POE boxes
> > >
> > >
> > > At 11:41 AM +1100 16/2/03, rik wrote:
> > > >im quiet willing to get these and divide the cost by 7 for
> the first 6
> > > >people who come up to me at the mw meet
> > > >
> > > >if you dont know me yet im the one people bring monkeys to
> throw poo at
> > > >
> > > >rik
> > > >----- Original Message -----
> > > >From: "Clae" <clae at tpg.com.au>
> > > >To: <melbwireless at wireless.org.au>
> > > >Sent: Sunday, February 16, 2003 7:50 AM
> > > >Subject: [MLB-WIRELESS] N-type adapters, 5V regs on eBay
> > > >
> > > >
> > > >>  Are these any use to anyone?
> > > >>
> > > >>  http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=2507561051
> > > >>  Connector N Type Adaptor M-M (1 Lot of 7)
> > > >>  http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=2507583645
> > > >>  Connector N Type Adaptor M-F (1 Lot of 7)
> > > >>  http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=2507567310
> > > >>  REGULATORS   5  Volt     ( 1 x Lot of 100)
> > > >>
> > > >>  If so, and you're not on eBay, get back to me to arrange bidding.
> > > >>  Each lot is currently $19.95 with no bids.
> > > >>
> > > >>  Clae.
> > > >>
> > > >>  --
> > > >>  -=-=-=-=-=-=-=-=-=-=-=-=-
> > > >>     insert twee, inoffensive .sig joke
> > > >>       and teddy-bear ascii art here
> > > >>  -=-=-=-=-=-=-=-=-=-=-=-=-
> > > >>
> > > >>  To unsubscribe: send mail to majordomo at wireless.org.au
> > > >>  with "unsubscribe melbwireless" in the body of the message
> > > >>
> > > >
> > > >
> > > >To unsubscribe: send mail to majordomo at wireless.org.au
> > > >with "unsubscribe melbwireless" in the body of the message
> > >
> > >
> > > --
> > > -=-=-=-=-=-=-=-=-=-=-=-=-
> > >    insert twee, inoffensive .sig joke
> > >      and teddy-bear ascii art here
> > > -=-=-=-=-=-=-=-=-=-=-=-=-
> > >
> > > To unsubscribe: send mail to majordomo at wireless.org.au
> > > with "unsubscribe melbwireless" in the body of the message
> > >
> > >
> >
> >
> >
> > To unsubscribe: send mail to majordomo at wireless.org.au
> > with "unsubscribe melbwireless" in the body of the message
> >
>
>



To unsubscribe: send mail to majordomo at wireless.org.au
with "unsubscribe melbwireless" in the body of the message