CN2796292Y - Electronic neon lmp transformer for preventing mercury displacement - Google Patents

Abstract

The utility model relates to an electronic neon lamp transformer for preventing mercury displacement. The utility model is characterized in that: two preventing standing wave lines which are mutually in reversed direction are specially connected in parallel; a relay tip is used to alternate actions at fixed time, moving back the displaced mercury in reversed direction. At the same time, the relay is concatenated at the mid-point of a high voltage resonance inductor, making the switching circuit at the zero voltage position of a resonance tank circuit and making the relay tip a valid whipping. In addition, a current detection is concatenated at a high voltage primary ring, and the positive negative pulse stuffing are simultaneously generated to modulate the charge and discharge electric capacity of an independent oscillator, synchronizing with the resonance frequency of the lamp. The electronic neon lamp transformer of the utility model can eliminate the beaded standing wave and prevent the mercury displacement, and can be widely suitable for the lamp assemblies of various classes and characteristics.

Description

Prevent the electronic type gas tube sign transformer of mercury displacement

Technical field

The utility model system is at electronic type high pressure gas tube sign transformer, for eliminating the pearl standing wave and preventing the utilization of the novel electron circuit that the required high-voltage output end polarity of mercury displacement regularly exchanges, and being applicable to widely, the more previous electronic type transformer of electronic type transformer the fluorescent tube combination of variety classes and characteristic before can not produce the shortcoming of mercury displacement and have.

Background technology

At present general electronic type gas tube sign transformer, all drive the high-tension transformer secondary coil with the high frequency square wave between the 20Kz to 100Kz, with the formed LC resonant groove path of the equivalent capacity of load neon light tube, simultaneously the resonance high-voltage electric energy is excited gas in the fluorescent tube and luminous, can be divided into two classes with regard to its square wave oscillation mode:

(1) is independent square-wave oscillator circuit such as accompanying drawing (two), square A is an oscillating circuit among the figure, T3 is a high-tension transformer, and Q1, Q2 amplify crystal for the MOS fet power, and T4 is a high-tension transformer, be elimination pearl standing wave circuit among the B, LP1 and LP2 are the load neon light, and its advantage is that applicable MOS is power amplification, stability when using bipolar transistor that temperature adjustment is preferably arranged, shortcoming is mercury ion displacement deepening in the long-time use meeting LP2, and does not have automatic resonance frequency and follow the trail of.

(2) be feedback type type oscillating circuit, as accompanying drawing (three), this kind vibration need have the starting of oscillation circuits for triggering of the A on square, needing to draw electric current from output place as the need persistent oscillation feedbacks to keep vibration, the same string of high-voltage output end has the elimination neon tube pearl standing wave circuit of C4 D8 in parallel, its advantage is that the simple cost of circuit is low, and frequency can become with load, shortcoming is that power output is only applicable to bipolar transistor, because of hfe becomes with temperature, so its stable extreme difference, especially large-power occasions, spoilage is high, takes a broad view of above-mentioned two kinds of transformers, and the shortcoming of colour tube mercury displacement is all arranged, first kind of no automatic frequency followed the trail of simultaneously, shortcomings such as the shortcoming of second kind of inapplicable MOS, so that poor stability, power can't strengthen.

Summary of the invention

The utility model purpose provides and a kind ofly prevents the pearl standing wave, can prevent the mercury displacement again, simultaneously the electronic type gas tube sign transformer that also has automatic frequency to adjust.

In order to eliminate neon tube pearl standing wave, prevent the mercury ion displacement again, special in parallel two oppositely prevent the standing wave circuit each other, and with regularly alternating movement of relay tip, the mercury of displacement is retracted with opposite direction, relay is serially connected with the mid point of high pressure resonance coil simultaneously, make switched circuit be in resonant groove path no-voltage place, the unlikely jumping arc of relay tip was lost efficacy, and in the elementary circle serial connection of high pressure current detecting, produce the charge and discharge capacitance amount of positive negative pulse stuffing simultaneously, and then be synchronized with the fluorescent tube resonance frequency with the modulation separate oscillators.

Electronic type gas tube sign transformer of the present utility model can be eliminated the pearl standing wave and prevent the mercury displacement, and this electronic type gas tube sign transformer is applicable to the fluorescent tube combination of variety classes and characteristic widely.

Description of drawings

Fig. 1 is for preventing pearl standing wave and mercury gearshift calcspar;

Fig. 2 does not have the mercury of preventing gearshift calcspar for only preventing the pearl standing wave;

Fig. 3 is the attached electric current back coupling automatic frequency-conversion calcspar that prevents the pearl standing wave;

Fig. 4 is for preventing pearl standing wave and mercury gearshift line map.

Accompanying drawing 1 main element symbol description

AC1 is the AC power input,

AC2 is the AC power input,

DB1 is the bridge rectifier of power DC power supply,

C3, C4, C5, C6, C9, C12 are electric capacity,

Calcspar D then is power current detecting and produce the modulation impulse circuit,

Q1, Q2 are the MOS crystal,

T3 is a driving transformer,

T4 is a high-tension transformer,

Calcspar C is a polarity transformation circuits,

LP1, LP2 are neon lamp tube,

Calcspar B is a regularly switched circuit of timing oscillator control,

Calcspar A is the high frequency square wave oscillator,

R5 is a resistance,

D1, D2, D3, D4, D5 are diode,

Accompanying drawing 2 main element symbol descriptions

AC1 is the AC power input,

AC2 is the AC power input,

DB1 is the bridge rectifier of power DC power supply,

C3, C4, C5, C6, C9, C12 are electric capacity,

Q1, Q2 are the MOS crystal,

T3 is a driving transformer,

T4 is a high-tension transformer,

LP1, LP2 are neon lamp tube,

Calcspar B is elimination neon tube pearl standing wave circuit,

Calcspar A is the high frequency square wave oscillator,

R5 is a resistance

D1, D2, D3, D4, D5 are diode

Accompanying drawing 3 main element symbol descriptions

AC1 is the AC power input,

AC2 is the AC power input,

DB1 is the bridge rectifier of power DC power supply,

R1 is a resistance,

C2, C3 are electric capacity,

Q1, Q2 are the MOS crystal

Square C is an electric current back coupling saturation transformer circuit of keeping persistent oscillation,

T4 is a high-tension transformer,

LP1, LP2 are neon lamp tube

Calcspar B is elimination neon tube pearl standing wave circuit,

Calcspar A is the starting of oscillation circuits for triggering,

Accompanying drawing 4 main element symbol descriptions

AC1 is the AC power input,

AC2 is the AC power input,

Be earthed circuit,

C1、C2、C3、C4、C5、C6、C7、C8、C9、C10、C11、C12、

C13, C14 are electric capacity,

T1 is a coil,

DB1 is the bridge rectifier of power DC power supply,

T2, T3, T4 are high-tension transformer

D1, D2, D3, D4, D5, D6, D7, D8 are diode,

Q1, Q2 are the MOS crystal,

R2, R3, R4, R5, R6, R7, R8, R9, R12, R13 are resistance,

K1 is a relay,

ISO1 is the optocoupler zoarium,

LP1, LP2 are neon lamp tube,

UIB, UIA are timer,

L1 is a coil.

Embodiment

Special in parallel two oppositely prevent the standing wave circuit each other, and with regularly alternating movement of relay tip, the mercury of displacement is retracted with opposite direction, relay is serially connected with the mid point of high pressure resonance coil simultaneously, make switched circuit be in resonant groove path no-voltage place, the unlikely jumping arc of relay tip was lost efficacy, and in the elementary circle serial connection of high pressure current detecting, produce the charge and discharge capacitance amount of positive negative pulse stuffing simultaneously, and then be synchronized with the fluorescent tube resonance frequency with the modulation separate oscillators.

Its detailed action principle can be illustrated by accompanying drawing 4, AC1 among the figure, AC2 is an ac power input end, capacitor C 1 and coil T1 form power-supply filter, capacitor C 5, resistance R 3, diode D1～D4, capacitor C 6 and voltage stabilizing didoe etc. constitute the DC power supply of 15V, supply high frequency vibration and timer UIA, the power supply of UIB and IC chip, UIA produces the high frequency square wave vibration and delivers to driving transformer T3 and produces two anti-phase each other square waves, and promote by MOS crystal Q1, Q2 and capacitor C 3, C4 forms the semibridge system power-output amplifier, power is delivered to the primary coil of high pressure output transformer T4, through magnetic coupling to transformer T4 secondary high pressure coil, and the export resonance high pressure is lighted the applying argon gas and the mercury colour tube LP2 of neon filling fluorescent tube LP1 and series connection, the DC power supply of main power is then supplied with by the DB1 bridge rectifier, the particular design part of this circuit is that promptly the high voltage secondary coil of transformer T4 is divided into two windings that the number of turns is identical, by capacitor C 14, diode D3, D2, relay K 1, optical coupling ISO1 and threeminute glass UIB constitute the automatic exchange line of certain high-voltage output end level, be in the mid point of coil because of relay exchange contact position, the mid point of high pressure resonant groove path just, its residing voltage also is 0V, the low pressure situation of guaranteeing to exchange so can make relay tip can not jump the arc phenomenon that is operated in is carried out, but but the high pressure output stage exchange of HV1 and HV2 reaches the purpose of the exchange of high pressure polarity.The elementary auxiliary winding of capacitor C 13, diode D6 and transformer T4 and ISO1 constitute the driving power of relay K 1 coil of isolating among the figure, transformer T2 resistance R 6,7 resonance power current detection circuits that constitute tube load of capacitor C, and press, can produce at transformer T2 secondary end during change such as aging the positive negative pulse stuffing of a corresponding voltage at fluorescent tube length, caliber, inflation, a pulse that utilizes, the capacitor C 9 that changes decision high frequency frequency among the UIA discharges and recharges the time, revises to best frequency of oscillation automatically.

Claims (1)

1, prevents the electronic type gas tube sign transformer of mercury displacement, it is characterized in that: special in parallel two oppositely prevent the standing wave circuit each other, and with regularly alternating movement of relay tip, the mercury of displacement is retracted with opposite direction, relay is serially connected with the mid point of high pressure resonance coil simultaneously, make switched circuit be in resonant groove path no-voltage place, the unlikely jumping arc of relay tip was lost efficacy, and in the elementary circle serial connection of high pressure current detecting, produce the charge and discharge capacitance amount of positive negative pulse stuffing simultaneously, and then be synchronized with the fluorescent tube resonance frequency with the modulation separate oscillators.

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