Hum Free 5 speed Electronic Fan Regulator - Page 2 - Electronic Circuits Projects Diagrams Free

atif_butt82 · 1st May 2008, 08:19 PM

thanx rodalco i hav got ur attachment but confused abt few thing. first how the voltage will drop at speed 2 n 3 with .47uf cap. and why to use a bypass switch? and secondary watz that 'M' in the circuit representing

RODALCO · 1st May 2008, 08:37 PM

M means motor (fan motor) in the schema.

The capacitor reduces the voltage to the motor by limiting the current flow. Also it causes a phase shift.
A capacitor doesn't get hot like a resistor.

This causes the motor to tun slower.
Basically the slip from the induction motor increases from the usual 3-4% to 40-60%.

The bypass switch is to run the fan at the top three speeds via the normal switches drawn in the black square.

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1st May 2008, 08:19 PM	(permalink)
atif_butt82	thanx rodalco i hav got ur attachment but confused abt few thing. first how the voltage will drop at speed 2 n 3 with .47uf cap. and why to use a bypass switch? and secondary watz that 'M' in the circuit representing

1st May 2008, 08:37 PM	(permalink)
RODALCO	M means motor (fan motor) in the schema. The capacitor reduces the voltage to the motor by limiting the current flow. Also it causes a phase shift. A capacitor doesn't get hot like a resistor. This causes the motor to tun slower. Basically the slip from the induction motor increases from the usual 3-4% to 40-60%. The bypass switch is to run the fan at the top three speeds via the normal switches drawn in the black square. __________________ There are more ways to get to Rome. Electricity, Electric clocks, Meters and Trains are great.