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Index 1695

The pulse generating circuit

Published:2011/6/27 10:34:00 Author:Borg | Keyword: pulse generating circuit

The pulse generating circuit
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The key pulse reset circuit

Published:2011/6/27 10:36:00 Author:Borg | Keyword: key pulse, reset circuit

The key pulse reset circuit
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Flash fire detection circuit

Published:2011/6/25 10:59:00 Author:John | Keyword: Flash fire

Flash fire detection circuit
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Audi awning circuit

Published:2011/6/25 11:00:00 Author:John | Keyword: awning

Audi awning circuit
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Audi passenger seat circuit

Published:2011/6/27 19:21:00 Author:John | Keyword: passenger seat

Audi passenger seat circuit
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Audi shift interlock circuit

Published:2011/6/27 19:08:00 Author:John | Keyword: shift interlock

Audi shift interlock circuit
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Audi door lock heating circuit

Published:2011/6/27 3:43:00 Author:TaoXi | Keyword: Audi, door lock, heating circuit

Audi door lock heating circuit
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DS2770 non-regulated power supply pulse charger circuit

Published:2011/6/27 3:42:00 Author:TaoXi | Keyword: non-regulated, power supply, pulse charger circuit

DS2770 non-regulated power supply pulse charger circuit
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Audi (with DRL) headlamp circuit

Published:2011/6/27 3:29:00 Author:TaoXi | Keyword: Audi, DRL, headlamp circuit

Audi (with DRL) headlamp circuit
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Diode light changing switch circuit

Published:2011/6/27 3:25:00 Author:TaoXi | Keyword: Diode, light changing, switch circuit

Diode light changing switch circuit
As the figure shows, when the S1 and S2 are closing, the light E lights normally; when the S1 is in the closing state, and the S2 is opening, the light E outputs the dark light; if you open S1, the light E will turn off no matter the S2 is opening or closing. (View)

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Audi front seat heating circuit

Published:2011/6/27 3:18:00 Author:TaoXi | Keyword: Audi, front seat, heating circuit

Audi front seat heating circuit
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Single stage PFC circuit

Published:2011/6/27 3:15:00 Author:TaoXi | Keyword: Single stage, PFC

Single stage PFC circuit
When the convertor of the electric car charger is working in the high frequency state, it will cause the harmonic pollution to the power grid, so we must do some effective actions to limit the total harmonic quantity of the electric car charger's convertor. For now, the charging converter must meet the IEEE519-1992 standard or the similar standards. To meet these standards, the charging converter can use the single stage or two stage PFC circuit and the integrated charger. To further improve the conversion efficiency, we can use the soft-switching circuit in the high frequency condition to reduce the power consumption of the switch tube. (View)

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Simple four stages light changing switch circuit

Published:2011/6/27 2:59:00 Author:TaoXi | Keyword: Simple, four stages, light changing, switch circuit

The simple four stages light changing switch circuit is as shown in the figure, it has four stages of luminance combination: when the switches S1, S2, S3 are all closing, light E is the brightest; when the switches S1 and S3 are closing, the light E is in the bright state; when the S1 and S2 are closing, and the S3 is opening, the light E is in the dark state; when the S1 is closing, the S2 and S3 are opening, the light E is in the darkest state; if S1 open, the light E will turn off. L can be used as the inductance of the 20～40W fluorescent ballast, the power of E can not exceed 60W. (View)

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Simple light changing stay wire switch circuit

Published:2011/6/27 3:34:00 Author:TaoXi | Keyword: Simple, light changing, stay wire, switch circuit

The simple light changing stay wire switch circuit is as shown in the figure, if you want to use it, you just need to pull the switch, the light will turn on; if you pull again, the light will darken; if you pull it the third time, the light will turn off, it is very convenient. (View)

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Lighting indication light switch circuit

Published:2011/6/27 3:56:00 Author:TaoXi | Keyword: Lighting indication, light switch circuit

The lighting indication light switch circuit is as shown in the figure, when the switch S is opening, the 220V AC current is reduced and limited by the resistance R, then it adds to the two ends of the LED with the bulb E, so the LED has power to turn on. We can find the switch at night. At this point the current which flows through E is very small, it is only 2mA, we can consider that it has no power consumption, the light will not turn on. If you close the S, the bulb E can shine normally, at this time the LED turns off. If you open S, and the LED will not shine, this means that the filament of bulb E has burned off or the power grid has cut off. (View)