Patent Application
20060250111
1. Field of the Invention
The present invention relates to an electric appliance control circuit assembly and more particularly, to a multipurpose electric appliance control circuit assembly, which can be controlled to emit light for illumination, or to receive broadcast signals from radio stations.
2. Description of the Related Art
A mobile lighting apparatus is known using a hand-driven dynamo to provide AC power supply, and a rectifier circuit to rectify AC power supply into DC power supply for charging a rechargeable battery to provide the necessary working voltage to a light emitting device for giving off light. This apparatus can be used for illumination only.
Further, there are AC to DC power adapters capable of rectifying AC power supply into different DC voltages for different electric appliances. These AC to DC power adapters can only be used to rectify city power supply into DC power supply. If city power supply is not available, these AC to DC power adapters become useless.
The present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide a multipurpose electric appliance control circuit assembly, which can be controlled to emit light for illumination, or to receive broadcast signals from radio stations. It is another object of the present invention to provide a multipurpose electric appliance control circuit assembly, which can be operated manually to provide the necessary working voltage. It is still another object of the present invention to provide a multipurpose electric appliance control circuit, which can be controlled to output different voltages for different electric appliances. To achieve these and other objects of the present invention, the multipurpose electric appliance control circuit assembly comprises a hand-driven dynamo rotatably by hand to generate AC power supply, a rechargeable battery, a rectifier filter circuit for rectifying AC power supply from the hand-driven dynamo into DC power supply and to filtrating noises from the DC power supply for charging the rechargeable battery, a lighting circuit electrically connected to the rechargeable battery for emitting light for illumination subject to the control of a switch, a boosting circuit for boosting the voltage of the rechargeable battery to a predetermined voltage level, a power output for selectively dropping the boosted DC voltage to one of a series of voltage levels for different electric appliances.
Referring to
The hand-driven dynamo MD is rotatably by hand to generate AC power supply.
The rectifier filter circuit 1 is comprised of a plurality of diodes D1,D2,D4,D5,D6, a resistor R1, and a capacitor C1, and adapted to rectify AC power supply generated by the hand-driven dynamo MD into DC power supply and to filtrate noises from rectified DC power supply, so as to provide stabilized voltage to charge the rechargeable 2.
The lighting circuit 3 is comprised of a plurality of diodes D7,D8,D9, a plurality of resistors R2,R3,R4, a light emitting diode LED, and a switch S1. The switch S1 is electrically connected to the rechargeable battery 2 to control output of battery power supply from the rechargeable battery 3 to the light emitting diode LED, causing the light emitting diode LED to give off light for illumination.
The boosting circuit 5 is electrically connected to the rechargeable battery 2 and adapted to boost the voltage of the battery DC power supply to a predetermined voltage level, comprised of a boosting chip IC, resistors R5,R6, an inductor L, and a capacitor C2.
The power output circuit 6 is comprised of a resistor R7, an electric socket 60, and a series circuit, which is comprised of resistors of different resistance values R8,R9,R10,R11,R12,R13, and switches S3,S4,S5,S6,S7,S8. The power output circuit 6 is electrically connected to the boosting circuit 5 to drop the voltage of the output power from the boosting circuit 5 to different voltage levels such as 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V for output through the electric socket 60 subject to the control of the switches S3,S4,S5,S6,S7,S8.
The radio 4 is adapted to receive broadcast signal from a radio station, enable the user to enjoy the audio program of the radio station.
Referring to
When the switch S1 of the lighting circuit 3 is switched on, battery power supply is transmitted from the rechargeable battery 2 to the lighting circuit 3, thereby causing the light emitting diode LED to give off light for illumination. When the switch S2 of the radio 4 is switched on, battery power supply is transmitted from the rechargeable battery 2 to the radio 4, enabling the radio 4 to receive broadcast signal from a radio station and to output received broadcast signal through speaker means thereof (Because the circuit design of the radio is of the known art and not within the scope of the present invention, no detailed description in this regard is necessary). Further, because the rechargeable battery 2 is electrically connected to the boosting circuit 5, the boosting circuit 5 boosts the voltage (about 4.2) of the rechargeable battery 2 to a predetermined voltage level (for example, about 15V) for output through the power output circuit 6, which drops the voltage to one of a series of voltage levels (for example, 3V, 4.5V, 6V, 7.5V, 9V, 12V subject to the control of the resistors R8,R9,R10,R11,R12,R3. Therefore, the power output circuit 6 provides different voltages for different electric appliances, i.e., any of a variety of electric appliances such as digital camera, mobile computer, digital video player, mobile telephone, pal-top game machine, etc., can be connected to the electric socket 60 to obtain the necessary working voltage subject to the control of the switch S3, S4, S5, S6, S7 or S8.
As indicated above, the invention uses a hand-driven dynamo MD and a rechargeable battery 2 to provide DC power supply for any of a variety of electric appliances. The invention can also be used as an electric hand light as well as a radio to receive audio programs from radio stations.
Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention.
