Wiring Precautions

Section 3-6

Output Surge Current

When connecting a transistor or triac output to an output device having a high

 

surge current (such as an incandescent lamp), steps must be taken to avoid

 

damage to the transistor or triac. Use either of the following methods to

 

reduce the surge current.

 

Method 1

 

Add a resistor that draws about 1/3 of the current consumed by the bulb.

OUT

L

FQM1

R

COM

 

+

Method 2

Add a control resistor as shown in the following diagram.

R

OUT

L

FQM1

+

COM

90

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Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 operation manual Output Surge Current, Reduce the surge current, Method