Technical information

Cautions for Use of SSR
14
ds_x61_en_ssr_technical_information: 011212D
SSR Driving Circuits
Phototriac Coupler, AQ-H Solid State Relay Driving Circuits
1. Relay Driver 2. NPN Transistor Driver 3. PNP Transistor Driver
Load
Load power
supply
Relay contacts
Vcc
SSR




Load
Load power
supply
NPN Transistor
Vcc
SSR




Load
Load power
supply
PNP Transistor
Vcc
SSR




4. TTL/DTL/IC Driver 5. C-MOS/IC Driver
(1) SSR fires when IC output is HIGH: (2) SSR fires when IC output is LOW:
Load
Load power
supply
TTL, DTL, IC
Vcc
SSR




Load
Load power
supply
C-MOS, IC
Vcc
SSR




Load
Load power
supply
C-MOS, IC
Vcc
SSR




6. Self Sustaining Circuit Using SSR 7. Driving with a Shared Supply 8. SSRs Used in Series
Load power
supply
Vcc
R
AB
SSR
ZNR
Terminal A: ON input pulse
Terminal B: OFF input pulse


Load
Load power
supply
ZNR
SSR
SW
C


Load
Load power
supply
ZNR
ZNR
SSR


SSR


Load
Vcc
1. NPN Transistor Driver
1) Phototriac Coupler
* Phototriac coupler and AQ-H is current driving type.
2) AQ-H Solid State Relay
4
3
1
2
Vcc
NPN Transistor
Load power
supply
Load
Load
Load power
supply
8
6
2
3
Vcc
NPN Transistor