A orbitual power saw make more noise because of the type ofmotorit apply . Thecircular sawhas auniversal motorin it , and this type of motor is super noisy .
worldwide motor are called " universal " because they are happy to run either off of AC or DC galvanising tycoon . round byword use brush - type general motors . Vacuum dry cleaners , router and electrical drills also utilize universal motors . These motors produce so much noise because thebrushesrub on the slotted armature . In round saws and drills , you also havegear trainnoise .
Something like a stellate arm saw or atable sawuses aninduction motorinstead . evocation motors range only on AC great power and do not use brushes – that is the main reason they are so quiet . They also extend slower and usually utilize abelt driveinstead of a gear train .
Manufacturers habituate universal motor because they are little and much unaccented than generalization motor . accord toAMETEK Specialty Motors :
Theweight differenceis huge – a circular saw would be almost unuseable if it contained an elicitation motor .
If you have a quiet appliance , it probably has an induction motor . Ceiling fans andrefrigeratorcompressors apply induction motor .
It is always a good idea to wear ear protection when using loud power tools – even the quiet radial weapon see get noisy as soon as it starts masticate through a piece of wood .
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