[simpits-tech] Electronics question

[Cris Harrison]

jeroen,
This is the Hardway
seems like you overherd of Open Collector, outputs
1. put 5vdc on the collector through a small resistor like 330ohms,
put your lamp/what ever between the resistor and the open collector now you
can pull this down with a gate if you want to, tada
Cris Harrison



On Thu, Mar 12, 2009 at 10:12 AM, Jeroen Huijben <jeroen_huijben at hotmail.com
> wrote:

>  I am wondering if this will work.
>
> I have a voltage divider of two resistors, set to put 2.5V at the output X
> when 5V is set over it.
> I want to use a logic chip (74HC74 dual Dtype flipflop) to pull the output
> to 0V or 5V, depending on how a rotary encoder turns.
> I have found how to turn the signal of the rotry into a high on either of
> two outputs of the flipflop.
> Now I want to use two transistors to short out either of the resistors so
> that the output X is connected to either side of the divider.
>
> http://i40.tinypic.com/jajuag.gif
> A and B will go straight to the chip with only a diode in between.
>
> Will this work?
> Can I use any regular transistor?
>
> Regards,
> Jeroen.
>
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