Cautions for Use of Solid State Relays
ASCTB400E 201806-T
Phototriac Coupler, AQ-H Solid State Relay Driving Circuits
*Phototriac coupler and AQ-H is current driving type
1. NPN Transistor Driver
6. Self Sustaining Circuit Using SSR
7. Driving with a Shared Supply
Vcc
R
A
B
SSR
ZNR
Load
Load power
supply
Terminal A: ON input pulse
Terminal B: OFF input pulse
1
2
3
4
U
ZNR
SSR
SW
C
Load
Load power
supply
1
2
3
4
U
(1) Phototriac Coupler
(2) AQ-H Solid State Relay
Load
Load power
supply
4
3
1
2
Vcc
NPN Transistor
Load power
supply
8
6
2
3
Vcc
NPN Transistor
Load
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