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ChargerCharger description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050269986, Charger. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] (a) Field of the Invention [0002] The present invention-provides improvement on structure of a charger, and embodies characteristics including a choke coil and a choke iron core disposed on a plane surface of heat dissipating fins. Furthermore, a configuration is embraced whereby a face plate, a control circuit board, a drive circuit board, the heat dissipating fins, a fan and a ventilation plate adopt a separately series-connected alignment and are fitted on a base thereof, whereafter the configuration is covered with a case and screwed down with screws, whereupon a base portion is screwed down by means of base screws penetrating a base plate. [0003] (b) Description of the Prior Art [0004] Output current and voltage of a conventional charger must be adjusted in advance in order to prevent overloading electric quantity when charging, which would otherwise result in shortening service life of a battery, even causing burnout of the battery. Furthermore, when electric power output of the charger is unstable, the charger is unable to operate in coordination with batteries having different electric power mode, resulting in reducing service life of the battery and damage to same. [0005] Hence, the inventor of the present invention expects to resolve and surmount existent technical difficulties in eliminating the aforementioned shortcomings. SUMMARY OF THE INVENTION [0006] The present invention provides improvement on structure of a charger. Electric circuits of the present invention are characterized in that electric power from a power supply input is transmitted to the drive circuit board through an input terminal, whereupon alternating current passes through a rectifier circuit and is converted into direct current thereat. Efficiency and stability of the electric power is enhanced through impedance matching generated by way of the choke coil, whereafter the electric power is transmitted to a wave filter circuit, thereby effectuating provision of steady direct current from the power supply. [0007] Upon charging, a detector detects status of internal voltage, electric current and electric quantity of a battery, whereupon results from the detector are transmitted to a microprocessor, which thereupon selects a charging mode, and effectuates switch over to an output circuit mode through transistors, while diodes prevent current reflux. The electric power output is further stabilized through regulated integrated circuits, which simultaneously prevent the electric current generated by the battery being charged from backing up to other electric circuits. Stability of the electric power is further enhanced by means of a transformer coupled to an electric power terminal, whereupon the electric power further passes through one more rectifier circuit and a wave filter circuit, whereafter the electric power is transmitted to the battery. [0008] Furthermore, when outputting the electric power, efficiency and stability of charging is enhanced through the impedance matching generated by the choke coil and the choke iron core, moreover, the choke coil is manufactured from ferrite core, which enhances anti-noise effect and high impedance matching of the choke coil. [0009] To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS [0010] FIG. 1 shows an elevational view according to the present invention. [0011] FIG. 2 shows an exploded elevational view according to the present invention. [0012] FIG. 3 shows a circuit diagram according to the present invention. [0013] FIG. 4 shows a schematic view of an embodiment according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] Referring to FIGS. 1 and 2, which show a charger A structured to comprise a case B, a base B1, a base plate B2, a face plate B3, a ventilation plate B4, a control circuit board C, a drive circuit board C1, heat dissipating fins D, a fan E, an output terminal P, and an input terminal Q, and is characterized in that: [0015] A detector M and a microprocessor 0 are configured atop the control circuit board C; [0016] Rectifier circuits F and J, wave filter circuits G and K, and a control circuit H are configured atop the drive circuit board Cl. [0017] Structural characteristics of the present invention are embodied in a choke coil L and a transformer I disposed atop a plane surface of the heat dissipating fins D. Furthermore, the face plate B3, the control circuit board C, the drive circuit board C1, the heat dissipating fins D, the fan E and the ventilation plate B4 adopt a separately series-connected alignment and are installed atop the base B1 thereof, whereupon the case B is placed on top and screwed down with screws, and thereafter a base portion is screwed down by means of base screws B21 penetrating the base plate B2. [0018] Referring to FIGS. 2 and 3, characteristics of an electric circuit embodied in a configuration whereby external power supply input is transmitted to the drive circuit board C1 through the input terminal Q, whereupon alternating current passes through a rectifier electric circuit F and is converted into direct current thereat. Efficiency and stability of the electric power is enhanced through impedance matching generated by way of a choke coil L, whereafter the electric power is transmitted to a wave filter circuit G, and utilizes refresh and discharge generated by capacitance G1 of the wave filter circuit G to complete filtering, thus enabling the power supply to provide steady direct current therewith. Upon charging, the detector M detects status of voltage, electric current and electric quantity within a battery T waiting to be charged, results of which are transmitted to the microprocessor O. Thereafter, the microprocessor O selects charge mode for the battery T waiting to be charged and effectuates switch over to output circuit mode by means of transistors H21, H22, H23, H24, while diodes H31, H32, H33 and H34 prevent current reflux. The electric power output is further stabilized through regulated integrated circuits H11, H12, H13 and H14, whereupon, in order to prevent electric current generated by the battery T from backing up to other electric circuits, the electric power further passes through the rectifier circuit J and the wave filter circuit K by way of the transformer I coupled to an electric power terminal, which further enhances stability of the electric power, whereafter the electric power is transmitted to the battery T. [0019] Furthermore, upon inputting the electric power, efficiency and stability of charging the battery T is enhanced through the impedance matching generated by way of the choke coil L, and with the choke coil L adopting a ferrite core as a configuration, anti-noise and high impedance matching of the choke coil L is enhanced. [0020] Wherein the rectifier circuit F is further configured as an alternating current rectifier, including a half-wave rectification rectifier circuit, a full-wave rectification rectifier circuit, a bridge rectifier circuit and related alternating current rectifier circuits. Continue reading about Charger... Full patent description for Charger Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Charger patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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