CN2309027Y - Comprehensive protector - Google Patents

Abstract

The utility model relates to a comprehensive protector, comprising a voltage-reducing rectification circuit, a charging voltage clamp circuit, a discharge voltage monitoring switch circuit, a high frequency lamp tube glow starting circuit and transfer switches Ka, kb. The voltage clamp circuit comprises the electronic components of (T< 5 >, T< 6 >), (D< 4 >), (R< 9 >, R< 8 >). The voltage monitoring switch circuit comprises the electronic components of (T< 2 >, T< 3 >), (R< 0 >, R< 3 >, R< 4 >, R< 5 >), (C< 5 >, C< 6 >), (w), (D< 2 >), etc. The two circuits provide the charge and discharge protection for batteries. A lamp-filament heating circuit is composed of a B, an L< 4 > and a Q in a high-frequency inverter lighting circuit. A switching circuit is composed of the components of T< 4 >, D< 3 >, C< 7 >, R< 6 > and R< 7 >. The lamp-filament heating circuit and the switching circuit are used for controlling heating current in order to protect the longevity of the lamp.

Description

A kind of comprehensive protection device

The utility model relates to a kind of light fixture protector, particularly a kind of comprehensive protection device.

The control that discharges and recharges of existing battery illuminating lamp is that road by electronic circuit control mechanical contact (relay contact) breaks and controls charge volume and discharge capacity, there is the cost height, the circuit complexity, produce gas during charging, electrolyte is easily done shortcomings such as solid, fluorescent tube does not have the heat filament circuitry measures simultaneously, and the black easily pin of fluorescent tube is aging, and useful life is not long.

The purpose of this utility model is to provide a kind of can protect storage battery, and fluorescent tube is lengthened the life, the comprehensive protection device of the friendship that can discharge and recharge, straight dual-purpose lamp.

The purpose of this utility model realizes as follows: be provided with one and can effectively avoid the closed secondary battery premature failure between the step-down rectifying circuit of handling AC power and fluorescent tube lighting circuit, the secondary battery protection circuit of being made up of charging voltage clamp circuit and discharge voltage pilot switch circuit that prolongs its useful life; In the high frequency starting circuit of routine, set up the tube filament heater circuit in addition, in order to tube starting with prevent that the black pin of fluorescent tube is aging, prolonging lamp tube useful life.

The existing AC/DC fluorescent tube illumination of the utility model emergency light has storage battery and fluorescent tube long service life, advantage such as durable in use.

Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.

Accompanying drawing is circuit theory diagrams of the present utility model.

In the accompanying drawing: P-step-down rectifying circuit, Q-fluorescent tube, B-transformer K _a, K _b-duplex change over switch has 1,2,3,4 contacts (fourth gear) ,+V _Cc1Be Voltage pulsating direct-current supply, V _Cc2Be the battery DC power supply, W-potentiometer, D ₁, D ₂, D ₄Be voltage stabilizing crystal diode, D ₃-rectifier diode, R ₀, R ₁, R ₂, R ₄, R ₅, R ₆, R ₈, R ₉Be divider resistance, R ₃, R ₇Be shunt resistance, C ₁, C ₄Be filter capacitor, C ₅, C ₇For starting electric capacity, C ₂, C ₃, be coupling capacitance, C ₆-delay electric capacity, transistor T ₁-T ₆Remove T ₂Outside the positive-negative-positive pipe, all the other are NPN type pipe, T ₅, T ₆Be multiple tube, NPN type triode of equivalence, L ₁-L ₄Winding coil for transformer B.

Referring to accompanying drawing, the utility model is by step-down rectifying circuit P, the charging voltage clamp circuit, and discharge voltage pilot switch circuit and high frequency starting circuit are formed, and the discharge voltage pilot switch circuit in the discharge circuit is by triode (T ₂, T ₃), resistance (R ₀, R ₃, R ₄, R ₅), electric capacity (C ₅, C ₆), potentiometer (W), diode (D ₂) wait electronic component to form, in DC power supply (battery) when voltage is reduced to set point, T ₂End, the high-frequency inversion lighting circuit is quit work, thereby protection DC power supply (battery) and fluorescent tube are avoided damaging T ₂Be positive-negative-positive, T ₃Be the NPN type, if T ₂Be NPN type, T ₃Be the positive-negative-positive triode, will be with power supply, electrical appliance incoming line, D ₂, C ₅Positive and negative polarity change simultaneously.Voltage clamp circuit in the charge circuit is by triode T ₅, T ₆, diode D ₄, resistance R ₈, R ₉Form, its battery maximum charging voltage is by diode D ₄Determine.From the pulsating direct current of step-down rectifying circuit P output, by voltage clamp circuit after change over switch Kb3 point charge the battery.By triode T ₁, high frequency transformer B, resistance R ₁, R ₂, capacitor C ₂, C ₃, C ₄, diode D ₁, the high-frequency inversion lighting circuit that electronic components such as fluorescent tube Q are formed is triode T ₂The direct current that transports converts high frequency voltage to, through B level of transformer L ₃Export to fluorescent tube Q electric energy is provided, on the other hand, coil L ₄Be connected into the loop with tube filament, for filament provides heating current.L ₄Usually from L ₃Tap obtains, and changes L ₄The number of turn can change the size that flows through heater current, can control heater current and be no more than predetermined value.Coil L ₄Can directly connect into the loop with tube filament, also can (X) from figure disconnect, electronic switching element T ₄Press place in circuit shown in the dotted line among the figure.Electronic component T ₄, D ₃, C ₇, R ₆, R ₇The electronic switch of forming is by L ₄The signal controlling work of output.The switching circuit of protection fluorescent tube Q control tube filament heating current is by triode T ₄, second tube sheet D ₃, capacitor C ₇, resistance R ₆, R ₇Form Deng element.

Claims (3)

1, a kind of comprehensive protection device, by step-down rectifying circuit P, charging voltage clamp circuit, discharge voltage pilot switch circuit and high frequency fluorescent tube starting circuit and duplex change over switch K _a, K _bForm, it is characterized in that: the charging voltage clamp circuit of protection storage battery is by triode T in the charge circuit ₅, T ₆, diode D ₄, resistance R ₈, R ₉Form in electronic component, the discharge voltage pilot switch circuit of protection storage battery is by triode T in the discharge loop ₂, T ₃, resistance R ₀, R ₃, R ₄, R ₅, capacitor C ₅, C ₆, potentiometer W and diode D ₂Form; High frequency fluorescent tube starting circuit, by high frequency transformer B, tapping L ₄, fluorescent tube Q forms.

2, a kind of comprehensive protection device as claimed in claim 1 is characterized in that: the switching circuit of protection fluorescent tube Q control filament heating current is by triode T ₄, diode D ₃, capacitor C ₇, resistance R ₆, R ₇Form Deng element.

3, a kind of comprehensive protection device as claimed in claim 1 is characterized in that: in the fluorescent lighting loop by winding L ₄The electronic switch of output signal Control work is by triode T ₄, diode D ₃, capacitor C ₇, resistance R ₆, R ₇Form.