XIMEA xiQ series Technical Manual page 46

3.8.4.4.5. Output Wiring Example: Inductive load (Relay) Driving
Do not connect inductive load RL directly to Camera Digital Output. A transistor must be used to prevent damage of the output.
See image below for possible inductive load driving. Resistor R can be connected to Digital Outputs and power supply to provide
the necessary bias current for transistor. You should also use an external diode to protect the transistor from over voltage while
disconnecting an inductive load. Keep in mind that this connection has an inverted logic. Current will flow through the load at the
start of the camera.
Power Supply
MQ Camera
DIGITAL OUTPUT
GND (Common IO Ground)
figure 3-38, Inductive load (Relay) Driving (inverted logic)
For positive logic you can use a second bipolar transistor.
Power Supply
MQ Camera
DIGITAL OUTPUT
GND (Common IO Ground)
figure 3-39, Inductive load (Relay) Driving (non-inverted logic)
xiQ - Technical Manual Version 1.0
D
R
T
R1 R2
D
T2
T1
RL
RL
46