Manjula,

Try this configuration:

(1) Connnect a resistor of value R say R1 between node A  and B
(2) Connecet another  resistor of value R say R2 between node B and ground.
(3) Connnect a variable resistor of value X say Rx between node A  and C
(4) Connecet another  resistor of value R say R4 between node C and ground
(5) Connect your voltage source Vin between nodes A and ground.
(6) Measure output voltage Vout between nodes B and C.

   Vout    V(nodeB) -V(nodeC)  = Vb -Vc
    Vout = Vin *(R/(R+R))  -Vin *(Rx /(Rx+R))| R1 = R2 = R4 =R
    Vout    Vin/2   -  Vin *(Rx/(Rx+R))   = Vin/2 *[(Rx -R)/(Rx+R)]
I hope this will clarify bridge measurement procedures. If you have any
questions
contact me.
John Nkwuo P.E
Email [email protected]


----- Original Message -----
From: "manjula raman" 
To: 
Sent: Wednesday, July 28, 2004 11:35 PM
Subject: [mems-talk] coventor-MEMPZR


hi,
I am using electrical links to connect 4 piezoresistors to form a wheatstone
bridge.I am applying voltage to 2 patches and i need to know output of the
bridge.I am getting error message(unable to open output file) after
simulation.Can anyone tell me how to connect 4 resistors and how to specify
voltages to complete the simulation.
thanks
manjula
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