Application Note - TVS

Application Note
Vishay General Semiconductor
Typical TVS Applications
Circuit
Breaker
Options
+
115 VAC
28 V
Aircraft
Bus
300 VAC
Avionics
Package
Figure 1. 28 V D.C. Supply Protection
Figure 6. Circuit Protection from Overvoltage Supply
+
24 VDC
Load
-
DC Motor
Figure 2. A.C. Supply Protection
Figure 7. EMI limiting
R1
+
115 V
Load
24 VDC
-
R1
R1
24 VDC
Relay Coil
Relay Coil
Spoiler
Resistor
Figure 3. Breakdown Voltage Rectifier Protection
Figure 8. Relay and Contractor Transient Limiting
Balanced Line
Unbalanced Line
Load
220 V
Figure 4. Breakdown Voltage Rectifier Protection
115 V
D1
D1
D1
D1
Gnd
+
+
-
≤ 30 pF
-
**
Load
-
When signal is on a
carrier which doesn’t
change polarity
To improve
Insertion
Loss
Low Capacitance TVS
Alternating Signal
**LCE/SAC
Figure 5. 115 V A.C. Supply Protection
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Document Number: 88439
Revision: 07-May-02
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