过压保护元件的技术资料A
Applicat
pplication
ion Gui
Guide
de b Be tte r
Over Voltage Protector
Pro tectio n p rin cip le ：
G en era l ly, G D T (G a s D ischarg e Tube ) w orks w hene ve r
a su rge vol tage exc e ed s th e r at e d w orki n g V oltag e of G D T .
A s th e a rc w ith hig h cur re nt (beca us e of i m p eda nce ofsurge
vo lta ge to G D T ) i s di sch arg ed , G D T ca n p reven t a f u rthe r
rise o fsu rg e vo l tag e ,
( a pp ro xim a te ly som e 10 vo l ts ), a n d
th e e n e rg y of su rg e w il l n ot tra n s m it to the c irc uitan d
co m p on en t n eed e d to be p rote ct e d.
保护原理 ：
当放电……
