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Category: Inside Circuits Views: 480 Rank: 10 This circuit switch slowly on and off the internal lights in a car. The delaying time can be adjusted changing the values of the 10k, 4M7 resistors and capacitor.  The BUZ74 can handle voltages of 500V, but you can use any power Mosfet transistor that can handle more than 50V. Datasheet file1: Click here to download 1N4148.pdf datasheet. Datasheet file2: Click here to download BUZ74.pdf datasheet. Datasheet file3: Click here to download BC337.pdf datasheet.
Related circuits This circuit has a 100-m V hysteresis which can be used in applications where very fast transition times are required at the output, even though the signal input is very slow. Visible-red-continuous-laser-gun Ql and Q2 switch the primary windings of transformer Tl via a square wave at a frequency determined by its magnetic properties. Diodes Dl and D2 provide base return paths for the feedback current of Ql and Q2. The output winding of T1 is connected to a multiple section voltage multiplier. That... An aid conversion technique which combines some of the speed advantages of flash conversion with the circuitry savings of successive approximation is termed half-flash. In an 8-bit, half-flash converter, two 4-bit flash aid sections are combined. The upper flash aid compares the input signal to... This field-strength meter is useful for antenna testing. It covers 6 to 60 MHz and uses a rugged 0-to-l mA meter. A 9 SI is external key switch. The alarm allows a 0- to 45-s delay after SI is operated before the circuit is armed. During this per Guarded input picoammeter circuit The circuit utilizes CA3160 and CA3140 BiMOS op amps to provide a full-scale meter deflection of ± 3 pA. The CA3140 serves as an 1T0 gain stage to provide the required plus and minus output swing for the meter and feedback network. A CMOS logic gate is used to make up this circuit. When an object is near the antenna, the change in oscillator output is detected by 1)1 and 1)2 and amplified by U1C, Simple triangle-square wave oscillator By making Rt variable it is possible to alter the operating frequency over a 100 to 1 range
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Most cars do not have delayed interior lights. The circuit presented can put this right. It switches the interior lights of a car on and off gradually. This makes it a lot easier, for instance, to find the ignition keyhole when the lights ...
This simple circuit is useful for any car owner especially during night. After getting inside car usually we close the door and inside of car is getting dark, moreover there is a few things to do before we are able to start our ...
As a result the transistor Q1 is turned ON ,which in turns ON Q2 which in turns drives the relay K1 to glow the head lights.The relay K1 will remain activated until the capacitor C1 is fully discharged.The time delay of the circuit ...
Here's a design circuit for courtesy light circuit that was constructed to provide a time delay feature when switching OFF a light to give the person enough time to reach the bed before the lamp completely turns OFF. Here's the ...
reaches VOH. The rising delay of X. If the cap is zero, then an. instantaneous transition. Rise Time = Tr = -RL Cgs ln (1-Voh/Vs) Cgs = 0.1 pf or "puff" Rl Cgs = 0.1 ns. The falling delay circuit is a voltage source, voltage divider ...
Need help with Traffic Light Controller The Projects Forum. ... I need help building the actual circuit on my breadboard for this project. The following is my code: Code: list p=12F609 ; list directive to define processor #include ...
Light ON/OFF Delay Relay in Car Electronics
Power Off Time Delay Relay Circuit
Comments
wrote on Feb 23, 2008
Nice and simple circuit!
It's possible to increase the fade in time?
Thanks
SATISFACTORY wrote on Jul 29, 2009
nice but we need more simple circuits and idea like this project.......thanks
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