CN2455533Y

CN2455533Y - Indicator dimming switch

Info

Publication number: CN2455533Y
Application number: CN 00268504
Authority: CN
Inventors: 李少华
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-28
Filing date: 2000-12-28
Publication date: 2001-10-24
Anticipated expiration: 2010-12-28

Abstract

The utility model relates to an automotive turning lamp flasher, which comprises an outer shell, a plug, a base seat, a circuit board, electronic elements, etc. A core circuit of the flasher uses an intelligent power switch integrated block, which realizes non-contact output and has strong anti-interference capability and large output power and has over-voltage, over-current and over-temperature protection and output end short circuit protection functions. A pulse control part uses a time-base circuit as an oscillator to cause the circuit stability to be enhanced. The flash frequency does not fluctuate along with loads and voltage. The utility model provides a novel automotive turning lamp flasher with reasonable design, cheap price, superior performance and long service life.

Description

The flasher Der Blink und Abblendschalter

The utility model relates to a kind of flasher Der Blink und Abblendschalter, particularly the flasher Der Blink und Abblendschalter of controlling with microelectronic integrated circuit.

As everyone knows, automobile is when turning, and the driver opens steering indicating light, and sends interrupted flash of light and note with the prompting pedestrian.The flasher Der Blink und Abblendschalter that existing market provided has all adopted relay in most product, its fatal defective is that the contact can produce spark, burn easily, influence service life, rating horsepower is on the low side, the flash rate instability can change along with the difference of bearing power.Some product also adopts the electronics no touch relay, but on the high side, and power is less than normal, and the unprotect function.

It is perfect that the purpose of this utility model provides a kind of defencive function, is difficult for burning, and flash rate is stable, non-contact-point, simple, the cheap flasher Der Blink und Abblendschalter of circuit.

The flasher Der Blink und Abblendschalter that the utility model is related comprises shell, plug, base, wiring board and is welded in the electronic circuit of being made up of electronic component on the wiring board, has wherein adopted intelligent power switch integrated package (IC in the electronic circuit ₂) as core parts, (IC ₂) pin 3 and pin 1 power connection both positive and negative polarity respectively, pin 5 meets steering indicating light (H ₁) and (H ₂) change-over swith (S), pin 2) with impulse oscillation device integrated circuit (IC ₁) mouth (3) link to each other resistance (R ₁) with (IC ₁) pin 3 be connected (IC with pin 6 ₁) pin 2 by electric capacity (C ₁) with meet to power cathode (IC after pin 1 links to each other ₁) pin 4 with after pin 8 links to each other respectively through stabilivolt (V _D) ground connection and through resistance (R ₂) the power connection positive pole.

The utility model circuit is simple, and is reasonable in design, owing to adopted intelligent power switch circuit, has contact pointless output, and antijamming capability is strong, the big and defencive functions such as overvoltage, overcurrent, excess temperature and mouth short circuit of horsepower output.Flash rate is stable, stable performance, long service life.

Fig. 1 is a circuit diagram of the present utility model;

Fig. 2 is an IC in the utility model ₂The in-to-in circuit block diagram.

Below in conjunction with accompanying drawing embodiment is described in detail.

As shown in Figure 1, IC ₁Adopt time base circuit partly as control by pulses.IC ₁Be connected into square-wave oscillator, positive source is through resistance R ₂With stabilivolt V _DEnter pin 4 and pin 8 after the voltage stabilizing, pin 1 power connection negative terminal, pin 3 is through resistance R ₁With pin 6, pin 2 and capacitor C ₁One end joins, capacitor C ₁Other end power connection negative pole, IC ₁Mouth pin 3 and IC ₂Input end pin 2 connect, the both positive and negative polarity of power supply is respectively from IC ₂Pin 3 and pin 1 input, IC ₂Mouth 5 and steering indicating light H ₁, H ₂Change-over swith S connect, pin 4 is through series connected resistance R ₃With light-emitting diode D ₁Ground connection.

When power supply when integrated circuit pin 8 and pin 4 inserts, IC ₁Pin 3 output high level, i.e. ICs ₂Input end present high potential, pass through IC ₂The judgement of internal circuit logic unit, through oscillator, level shift circuit makes the conducting of follower VMOS pipe, positive source through pin 3 pin 5 to change-over swith S, at this moment, if switch S and load steering indicating light H ₁Or H ₂Connection is just luminous.Simultaneously, because IC ₁Pin 3 be high potential, pass through resistance R ₁To capacitor C ₁Capacitor C is worked as in charging ₁On voltage be charged to 2/3rds V _DDuring the voltage of voltage regulation value, IC ₁Pin 3 become output low level, ic chip by original output high level ₂Pin 2 also is a low level, and follower VMOS pipe ends IC when being lower than 5V because of importing electricity ₂Pin 5 disconnect with power supply, so steering indicating light H ₁Or H ₂Do not work, at this moment, ic chip ₁In capacitor C ₁Pass through R ₁To pin 3 discharges that are active potential, work as capacitor C ₁On voltage discharge drop to 1/3rd V _DThe voltage stabilizing value time, IC ₁Pin 3 be high level by low level upset again, integrated package pin 5 again with power connection, steering indicating light H ₁Or H ₂Again luminous, so move in circles, reach steering indicating light H ₁Or H ₂The purpose of flash of light.

Ic chip ₂Can adopt the intelligent power switch circuit of import, its internal circuit block scheme as shown in Figure 2, respectively by logic unit, oscillator, level shift, temperature sensor, compositions such as voltage stabilizer, follower VMOS pipe.Simultaneously, when generation overvoltage, overcurrent, excess temperature, short circuit logic unit promptly judge fast, output end voltage is reduced to make the circuit SELF CL below the 5V.The fault detection voltage of pin 4 output 5V is passed through resistance R simultaneously ₃Make light-emitting diode D ₁Luminous (also can use buzzer phone), IC ₂Going up must finned.

Claims

1, a kind of flasher Der Blink und Abblendschalter comprises shell, plug, base, wiring board and is welded in the electronic circuit of being made up of electronic component on the wiring board, it is characterized in that having adopted in the electronic circuit intelligent power switch integrated package (IC ₂) as core parts, (IC ₂) pin (3) and pin (1) power connection both positive and negative polarity respectively, pin (5) meets steering indicating light (H ₁) and (H ₂) change-over swith (S), pin (2) and impulse oscillation device integrated circuit (IC ₁) mouth (3) link to each other resistance (R ₁) with (IC ₁) pin (3) be connected (IC with pin (6) ₁) pin (2) by electric capacity (C ₁) with meet to power cathode (IC after pin (1) links to each other ₁) pin (4) with after pin (8) links to each other respectively through stabilivolt (V _D) ground connection and through resistance (R ₂) the power connection positive pole.

2, flasher Der Blink und Abblendschalter as claimed in claim 1 is characterized in that integrated circuit (IC ₂) pin (4) and power supply between be in series with resistance (R ₃) and light-emitting diode (D ₁), form failure alarm circuit, wherein (D ₁) and R ₃Also available buzzer phone replaces.