[hpsdr] Lurkers and volunteers: What in heaven's name happened to good old Proto!

[Eric Ellison]

Mike

We had quite a few messages on the list regarding plugging a 25 am 3.3 volt
(or name your voltage poison) on the list when we decided to use the readily
available power from an ATX power supply. 

No, nothing was decided regarding current limiting.... Watch out for not
only smoke, but EXPLOSIONS! 

Any Ideas for still using an ATX rather than a highly regulated bench
supplies on the alternate Atlas pins?

Thanks
Eric


-----Original Message-----
From: Mike Naruta [mailto:mnaruta at comcast.net] 
Sent: Monday, July 17, 2006 10:59 AM
To: Eric Ellison
Cc: hpsdr at hpsdr.org
Subject: Re: [hpsdr] Lurkers and volunteers: What in heaven's name happened
to good old Proto!

Please excuse my ignorant question, but I have
not seen any current limiting in the HPSDR project,
other than that from the PC power supply.
It seems like 10 Amps could do a lot of damage if I
bumped my scope probe shield against the wrong spot.
Are the on-board regulators the sacrificial current
limiting devices?


Mike - AA8K



Eric Ellison wrote:
> 
> I have not heard ONE word on 'Good Old Proto' (Proteus) mentioned 
> initially by Phil Covington. Any of you guys with all the wonderful PCB 
> tools (preferably not current project leaders who are busy with other 
> HPSDR tasks!). Proto COULD just spur development in many other areas and 
> would make a great 'dead bug' platform to neaten up Bill's - KD5TFD's 
> efforts! No telling what that guy could do with a breadboard mounted on 
> the buss! (smile) 
> 
> What do we need on this board? Obviously regulators and rails for all 
> voltages! Can it be a 2 layer board? Should it be the largest official 
> form factor? How about external power pins so the board can be stand 
> alone? LED's and other blinkeys?  USB and other outside world 
> connectors? Small standoff's or 'snap off/on'  for generic smaller more 
> complex daughter cards? Stacking pins across the 'inside world' edge for 
> stacking more than one proteus?
> 



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