Basic Wheatstone Full Bridge Circuit

[Eddie W. Shore]

The program WHEATSTONE (HP Prime) deals with the full Wheatstone circuit.

Formulas

EA = E * (1 – R4/(R4 + R3))
EB = E * (1 – R1/(R1 + R2))
eO = EA – EB

Variables used: A = R1, B = R2, C = R3, D = R4, L = EA, R = EB, O = eO

Resistance is measured in ohms (Ω), current in volts (V).

HP Prime Program WHEATSTONE

Code:

EXPORT WHEATSTONE()
BEGIN
// 2017-04-25 EWS

LOCAL K,A,B,C,D,L,R,O;

INPUT({A,B,C,D,E},
"Basic Wheatstone",
{"R1: ","R2: ","R3: ","R4: ",
"E: "});
L:=E*(1-D/(D+C));
R:=E*(1-A/(A+B));
O:=L-R;
PRINT();
PRINT("EA: "+L);
PRINT("EB: "+R);
PRINT("e0: "+O);
END;

Link: http://edspi31415.blogspot.com/2017/04/h...basic.html

Source:

Strain Gages and Instruments. Tech Note TN-514 Vishay Precision Group. February 1, 2013. Link: