Page top

Building Automation


Industrial Automation


Power Automation & Safety

Bangladesh Distributor

Lead Contents

FAQ02681 of Photomicro Sensors FAQ

FAQ No. FAQ02681

Primary Contents

Question

Why is a capacitor of at least 10 micron (micrometer) F required to extend the EE-SP Photomicro Sensors cable?

Answer



EE-SP Series uses an LED for pulse illumination (modulated light). A circuit to fully stabilize the power supply voltage is not built into the Sensors, and so the voltage supplied to the Sensors will fall when the LED is lit due to the cable resistance and LED current if the cable is extended. A capacitor must be inserted (as a smoothing circuit) to prevent unstable operation due to the drop in voltage.