Weekly PULSE Issue
Kaivan Karimi – Dir. of Global Strategy, Microcontroller Group, at Freescale
Featured Articles
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Latest Material and Construction Methods for High Quality Rigid-Flex...
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Placeshifting Video to View it Anytime, Anywhere
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Reactive Power Part 3: Voltage and Var Solutions
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Reactive Power Part 2: Problems with Highly Compensated Power...
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Reactive Power Part 1: What it is; why it is important
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VHDL 101 - From Logic Gates to Adders
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Community Energy Storage for Reliability
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The Raspberry Pi Part IV : Setting up a Simple Server
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Strain-Gauge Sensors
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DDR4 Design Considerations
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Making the Motherboard Connection
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The Raspberry Pi Part III: Installing Arch Linux ARM
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Research Into and Uses of Terahertz Switching-Speed Transistors
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Design & Analysis of TDC Converter Architectures - Part 2
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Design & Analysis of TDC Converter Architectures in 80nm CMOS...
Circuit's Blog :
Return to BlogFade-In & Fade-Out Effects to the In-Car Lights
Posted Jan 26, 2012 at 11:53 am
Figure 1
This circuit adds a nice fade-in fade-out visual effects when switching your in-car lights on and off. The fading time can be changed by adjusting the charging and discharging times of the capacitor. To do this, adjust the values of the 10 KOhm and 4.7 MOhm resistors.
BUZ74 is a SIPMOS power transistor (Siemens MOSFET) that can handle up to 500V. Instead of BUZ74, you can use any other power MOSFET that has a VDS value greater than 50V.
3 years ago: I used this on our old car to save the life of the bulbs becoz when the bulbs turn off, they need a little time to cool down the filaments gradually before completely shutting off
3 years ago: this can avoid the bulbs to be easily worn out due to the sudden burst and disappearance of electricity on the filaments