TISP3290F3DR-S Просмотр технического описания (PDF) - Bourns, Inc

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TISP3290F3DR-S

HIGH-VOLTAGE DUAL BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS

Bourns, Inc 

TISP3xxxF3 (HV) Overvoltage Protector Series

APPLICATIONS INFORMATION

Longitudinal Balance

Figure 18 shows a three terminal TISP® device with its equivalent “delta” capacitance. Each capacitance, CTG, CRG and CTR, is the true

terminal pair capacitance measured with a three terminal or guarded capacitance bridge. If wire R is biased at a larger potential than

wire T, then CTG >CRG. Capacitance CTG is equivalent to a capacitance of CRG in parallel with the capacitive difference of (CTG -CRG).

The line capacitive unbalance is due to (CTG -CRG) and the capacitance shunting the line is CTR +CRG/2.

All capacitance measurements in this data sheet are three terminal guarded to allow the designer to accurately assess capacitive

unbalance effects. Simple two terminal capacitance meters (unguarded third terminal) give false readings as the shunt capacitance via

the third terminal is included.

T

T

(CTG-CRG )

CTG

G

Equipment

G

CTR

CRG

CTR

Equipment

CRG

R

CTG > CRG

R

Figure 18.

CRG

Equivalent Unbalance

AIXXAB

“TISP” is a trademark of Bourns, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office.

“Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries.

MARCH 1994 - REVISED MARCH 2006

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

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