Delta-Y Impedance Circuit Transformation - Sharp EL-5230 Operation Manual

Delta-Y impedance circuit transformation

Transformation of a Y impedance circuit to an equivalent Delta impedance
circuit and vice versa.
The Delta-Y transformation is defined by the following formula:
R
Z = —
1
R
2
R
Z = —
2
R
3
R
Z = —
3
R
1
where R = R
Press b 2 1 0 to open a window for creating a NEW
1.
program.
Type DELTAY for the title then press e.
2.
• A NEW program called 'DELTAY' will be created.
3. Enter the program as follows.
Program code
Print"(1)DELTA TO Y
Print"(2)Y TO DELTA
Input X
If X=1 Goto DTOY
If X=2 Goto YTOD
Label DTOY
Z
2
Z
Z
3
1
R + R R + R R
1 2 2 3 3 1
Chapter 8: Application Examples
Z Z
1
R = ———
1
Z
Z Z
2
R = ———
2
Z
Z Z
3
R = ———
3
Z
where Z = Z
Key operations
i 1 ( 1 ) @ a
DELTA s TO s Y ; e
i 1 ( 2 ) @ a Y
s TO s DELTA ; e
i 2 ; X e
i 8 ; X ; = 1 ;
s i 9 @ a DTOY
; e
i 8 ; X ; = 2 ;
s i 9 @ a YTOD
; e
i 6 @ a DTOY ;
e
R
1
R
2
2
R
3
3
1
+ Z + Z
1 2 3
99