🚀 go-pugleaf

In article 1539@esunix.UUCP Blaine Gardner writes:
>
>From article <7955@cbmvax.UUCP>, by kevin@cbmvax.UUCP (Kevin Klop):
>> In article <508@aucis.UUCP> andrew@aucis.UUCP (Andrew Gillham) writes:
>>>A friend of mine is trying to build a switchbox to switch the mouse and
>>>Joystick on port 1.
>> [Lots of pinouts deleted.]
>
>What about just switching power and ground? Since the joystick switches
>are all wired from their output to ground, opening the ground lead will
>completely disable it. The mouse requires both power and ground, so
>opening those two will disable it.


Disconnecting power or ground from only part of a circuit is generally a 
bad thing to do.  The unpowered section of the circuit usually 'tries'
to get power through other connections to the live part of the circuit.
When this happens high amounts of current can go through inputs or outputs
and burn out the circuit.

	Steve