Example 2 An inductor has a value of 820 aH. Express this in (i)
millihenrys and (ii) henrys
(i) 1 uH = 1 x 10"
3
mH
820 uH = 1 x 10"
3
x 820 = 0.82 mH
(ii) 1 jiH = 1 x IO"
6
H
820 uH = 1 x IO
-6
x 820 = 8.2 x IO
-4
H
10 PRINT "PROG 96"
20 PRINT "CONVERSION OF MICROHENRYS TO OTHER UNITS"
30 INPUT "ENTER MICROHENRYS" ; UH
40 LET MH=UH/10*3
50 LET H=UH/10*6
60 PRINT UH "MICROHENRYS = " MH "MILLIHENRYS"
70 PRINT UH "MICROHENRYS = " H "HENRYS"
8.3
Inductor formulas
(a) Induced voltage
The average voltage induced in a coil is given by the formula
e = N
d<t>/dt
where
6Q>/dt
= rate of change of magnetic flux with tim ...
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