Does this creature exist / Is this possible ?? slightly urgent...

[iso9001]

First off, I'm extremely new at this... but I aint no fool

I need a chip/curcuit (maybe single chip??) to read in 3 different wires and for each wire output two others (ie: 3 in | 6 out), but they all need to be different resistances... so for example:

Wire1 is sending a 5V signal at 4.5ohm... this goes into the chip, and then the chip sends out two wires, one at 4.5ohm and the other at 9ohm... (ohm numbers are just for example)

What chips have instruction sets to do this ?? Do any exist ? Cheap easy programming is a serious plus.

Can analog or digital ICs read in and output resistances ???

Thanks,

 

[xyzz]

I have read your post many times and still cannot understand the task.
Please explain better.
Also mention the required operation speed.

 

[nbucska]

The problem seems to be trivial but understanding what
you really need is HARD. Trying to translate:

You need three independent circuits. Each one has one input and two outputs. The input is a voltage Vi across an input
resistance Ri. One output is V1 driving R1 the second
in V2 with the load of R2.

V1/Vi and V2/Vi must be defined.

No single chip solution, but OP.AMP with R-s.
Give specs with tolerances.




<nbucska@pcperipherals.com>

 

[plcsavvy]

why not use digital potentiometers to give you the required resitances? Most Digital potentiometers are interfaced serially to an external controller such as a plc or microcontroller. You may be able to locate one that uses a simple binary input.

best ragards, PLCSAVVY