Re: mass storage for Apple //c

[David Schmenk <dschmenk@gmail.com>]

On Wednesday, 12 June 2013 00:13:56 UTC-7, Michael J. Mahon  wrote:
> Riccardo <rigreco.grc@gmail.com> wrote:
> 
> > The converter have a system protection of short-circuit or over range
> 
> > current, (by a feedback control - it can put down all voltage output to 0
> 
> > V for safety),  but, anyway, all depends to type of over load current
> 
> > (time/current curve). 
> 
> > 
> 
> >> 
> 
> >> The supply has internal protection. It will probably work fine--just give
> 
> >> 
> 
> >> it a try. 
> 
> >> 
> 
> > 
> 
> > Oh no thanks! :-)
> 
> > 
> 
> > (I don't trust of internal protection)
> 
> > 
> 
> > Ric.
> 
> 
> 
> The internal supply must protect itself from overloads, since there is no
> 
> fusing on any connectors to the outside world. 
> 
> 
> 
> A bad power supply can fry a main board, but I've never seen a bad main
> 
> board (or joystick, or...) fry a power supply. They just shut down
> 
> (repeatedly) until the load is manageable. 
> 
> 
> 
> -michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon

Actually, I have some ROM 0 //c's and they do have a fuse on the MB.  Looks like a little glass cap near the back left.   Couldn't find it on any schematics, but managed to "discover" it when I was making a 12 V car adapter.

Dave...