Touch control fan and method

Details Touch control fan and method Touch control fan and method

1995-12-19

1997-09-02

Wong, Peter

Electricity: power supply or regulation systems

For phase shift or control

Using impedance

323211, 323904, 327110, G05F 100

Patent

active

056636334

ABSTRACT:
A control circuit for an electrical appliance having an inductive load includes a signal conditioning element, a control element, a power conditioning element, a power adjustment element, and a switching element. The control circuit is sensitive to input received from a sensor which in turn is sensitive to a touch on an outside of a conductive casing of the appliance or a sharp sound. A separate touch pad is used if the appliance has a non-conductive casing. The load is typically a motor for driving a fan unit. The fan unit may be used either independently or as part of an appliance such as a humidifier, dehumidifier, heater, or air purifier.

REFERENCES:
patent: Re33285 (1990-07-01), Kunen
patent: 4211959 (1980-07-01), Deavenport et al.
patent: 4289972 (1981-09-01), Wern
patent: 4672229 (1987-06-01), Skarman et al.
patent: 4988924 (1991-01-01), Maurer et al.
patent: 5473202 (1995-12-01), Mudge et al.

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