On 2/25/2013 9:23 PM, Yan Seiner wrote:
>
>
> I have a "smart relay" that's controlled by a tri-state switch. The
> switch has a power lead and one wire out of it that works like this:
>
> State 1: 12V nominal
> State 2: floating (not connected)
> State 3: ground
>
> I need to detect the state of this switch with my TS7200. How do I
> translate this into 2 (or 3, I have inputs to spare) bits for a TS7200
> DIO header?
>
> Thanks.
Will two transistors not work?
NPN, collector to +12v, emiter to valve
PNP, collector to ground, emiter to valve and tie the bases together.
--
Jason Stahls
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