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Conclusion

Doc ID 1863 Rev 2

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Conclusion

Microcontroller units (MCU) are in common use in most areas of home appliances. The

applications described in this Application note show that enhanced appliance circuits can be

designed with ST6210 MCU and a snubberless or logic level TRIAC.

The presented circuits are a universal motor drive, and a light dimmer operating from the

110/240 V mains. The motor drive can be adapted, for instance, to vacuum cleaners, food

processors, drills or washing machines. The light dimmer drives incandescent and halogen

lamps supplied either directly from the mains or through a low voltage transformer.

Those circuits include soft start and protection features. Different user interfaces can be

chosen: touch sensor, push button or potentiometer.

Such features are obtained with only few components: an ST6210 MCU in 20 pin DIL/SMD

package with a logic level or snubberless TRIAC in TO-220 package and some passive

components.

Additional features such as motor speed regulation, torque limitation, vacuum or unbalance

implemented.