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24 ELECTRIC DISCHARGES, WAVB8 AND

I rl

(6)

The same equations may bo derived directly by the integration
of the differential equation:

(7)

where Lj: is the inductance voltap, n the ri^wt

and their sum equals zero, an the «oil i« nhort-eircmitetl

Equation (7) transpoBod gives

di r _u

nr - — ₇ <ft
t L ^J

hence

i « - 7 t + logC,
ij

and, as for t » 0: i m t*₀₎ it is: C •» i§;

14. Usually single-energy tratwientu last an
and thereby become of onginaaring importtai^c^ only in highly
inductive circuits, as motor fields, magnate, oto.

To get an idea on the duration of mush inngnetki tnai»k*iit«_#consider a motor field:

A A-polar motor has 8 ml (megalincn) of mapiatici flux jn^r
pole, produced by 6000 ampere turns m*m.f. per polo, arid
pates normally 500 watts in the field oxdtatioDu

That is, if to » field-exciting current, n » number of fli*M tiirnn
per pole, r « resistance, Md JD - inductance of the fielck«dting
circuit, it is

ioV » 500,
hence

„ 500

* *** ""Y¹*^*¹¹*

to¹



	24 ELECTRIC DISCHARGES, WAVB8 AND I rl

	(6)

	The same equations may bo derived directly by the integration of the differential equation:

	(7)

	where Lj: is the inductance voltap, n the ri^wt and their sum equals zero, an the «oil i« nhort-eircmitetl Equation (7) transpoBod gives *di r _u* nr - — ₇ <ft t L ^J hence i « - 7 t + logC, ij

	and, as for t » 0: i m t*₀₎ it is: C •» i§;

	14. Usually single-energy tratwientu last an and thereby become of onginaaring importtai^c^ only in highly inductive circuits, as motor fields, magnate, oto. To get an idea on the duration of mush inngnetki tnai»kiit«_#consider a motor field: A A-polar motor has 8 ml (megalincn) of mapiatici flux jn^r pole, produced by 6000 ampere turns mm.f. per polo, arid pates normally 500 watts in the field oxdtatioDu That is, if to » field-exciting current, n » number of fliM tiirnn per pole, r « resistance, Md JD - inductance of the fielck«dting circuit, it is ioV » 500, hence „ 500 *** ""Y¹^¹¹* to¹