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Attention-Grabbing 'Blue Light Special' - 16-Mar-09 -Design News: William Grill wanted to draw attention to a trade show booth. He considered a big neon sign, loud music and a provocative attitude, but instead he created this attention-getting gadgethis "Blue Light Special." Grill made this gadget with a mere $15 in materials. It is built around Microchip __ Gadget Freak-Case #137 Audio Light Modulator - Audio light modulations add to enjoyment of music during functions organised at home or outdoors. Presented here is one such simple circuit in which light is modulated using a small fraction of audio output from speaker terminals of audio amplifier. The output from speaker terminals of audio amplifier is connected to a transformer
Audio-Controlled Running Light - This mains-operated audio-controlled running light can be used in discotheques. The lamps glow in running sequence as per the sound of music. Of the ten AC lamps, only one lamp permanently...__ Electronics Projects for You
Auto Switch-off Staircase Light - Audio light modulations add to enjoyment of music during functions organised at home or outdoors. Presented here is one such simple circuit in which light is modulated using a small fraction of audio output from speaker terminals of audio amplifier. The output from speaker terminals of audio amplifier is connected to a transformer
Automated crib light - This circuit is intended to drive the various lights decorating the crib prepared during Christmas season at many homes in Latin Countries, especially for children delight, in order to obtain realistic light-effects. __ Contact: Flavio Dellepiane, fladello @ tin.it
Automatic 12 Volt Lamp Fader - This circuit is similar to the "Fading Red Eyes" circuit (in the LED section) used to fade a pair of red LEDs. In this version, the lamps are faded by varying the duty cycle so that higher power incandescent lamps can be used without much power loss. The switching waveform is generated by comparing two linear ramps __ Designed by Bill Bowden
Automatic Bathroom Lamp - This simple circuit can be used as an automatic bathroom lamp controller. It disables the bathroom lamp at daytime and enables it at night. The circuit is built around a light-dependant...__ Electronics Projects for You
Automatic Bathroom Light with Back-Up Lamp - Sometimes we forget to switch off the bathroom light and it remains on unnoticed for long periods. This circuit solves the problem of electricity wastage by switching off the lamp automatically...__ Electronics Projects for You
Automatic control starts loads softly - 10/13/94EDN-Design Ideas Applying ac power to the circuit in Fig 1 causes it to gradually increase the power to the ac load, effecting a "soft start. " The components connected to 555 timer IC1's pin 2 provide a trigger synchronized with the ac input's zero crossing. In conventional 555 fashion, R1, R2, and C determine IC1's period. Design by Liu Ning, Institute of Quantum Electronics, South China Normal University, Guangzhou, China
Automatic Darkness-Controlled Lighting SystE - M - Make tubelights automatically switch on at night and switch off in daytime using this automatic control system. Automatic darkness-controlled lighting system means that whenever there is darkness, light source like bulb...__ Electronics Projects for You
Automatic Emergency Light - This emergency light has the following two advantages: 1. It turns on automatically when the mains power fails, so you need not search it in the dark.2. Its battery starts charging as...__ Electronics Projects for You
Automatic Emergency Light - This circuit implements the concept of emergency light through relays. The circuit lights up LEDs in case of power failure and charges the batteries otherwise. __ Contact: IQ Technologies
Automatic emergency torch - Just don’t think that this is yet another addition to other emergency light circuits published in EFY earlier. This circuit is a hit different. __ Designed by bhgya parma
Automatic Evening Lamp - Presented here is a solution for switching off outdoor lamps even when you are not at home. The lamp turns on in the evening and turns off in the morning so...__ Electronics Projects for You
Automatic fading lights - Suitable for 230V incandescent bulbs; Ideal for Christmas decorations __ Contact: Flavio Dellepiane, fladello @ tin.it
Automatic Headlight Brightness Switch - Driving the highway with your high-beam headlights can really increase your visibility, but can be a blinding hazard for other drivers. This simple circuit can be wired into your headlight switch to provide automatic switching between high and low beam headlights when there is oncoming traffic. It does this by sensing the lights of that traffic. In this way, you can drive safely with your high-beams on without blinding other drivers __ Designed by Aaron Cake
Automatic Headlights Switcher - Automatic headlamps are the latest convenience in today's cars. These eliminate the need for the driver to manually switch on or switch off the headlamps in most driving situations. The automatic...__ Electronics Projects for You
Automatic Night Lamp with Morning Alarm - This circuit automatically turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses daylight in the morning. A super-bright white LED...__ Electronics Projects for You
Automatic Night Lamp with Morning Alarm - This circuit project automatically turns on a night lamp when bedroom light is switched off. The lamp remains ON until the light sensor senses daylight in the morning. A super-bright white LED is used as the night lamp. It gives bright and cool light in the room. When the sensor detects the daylight in the morning, a melodious __ Designed by Popescu Marian
Automatic Night-Light Feeds Directly From the AC Line - EDN-Design Ideas 06/06/2012 Switch an ac load on and off with just four components. There are many approaches to the problem of activating a light when it becomes dark, and a recent Design Ideas covers this topic (Reference 1) . Some approaches require a dc power supply and an electromechanical relay, but a better approach involves feeding the device directly from the ac line, minimizing the number of components (Figure 1) . Design by Abel Raynus, Armatron International Inc, Malden MA
Automatic Parking Light for Cars - At night, parking lights make your parked car visible to motorists so they don’t smash into your car. However, these lights drain considerable power out of your car’s battery. Here is...__ Electronics Projects for You
Automatic Rear Bicycle Light - This is a design for a rear bicycle light that automatically switches on and off according to ambient lighting conditions. The red LEDs flash with a 50 % duty cycle to save energy; you can modify the circuit to light the LEDs continuously if local laws require itmust register on this site __ Designed by Published in Elecktor July/Aug, 2010
Automatic Room-Lock & Lights Circuit - This circuit counts and indicates up to nine persons present in the room and automatically locks the door and switches off lights as soon as they leave. It automatically switches on...__ Electronics Projects for You
Automatic Single-Channel Light Dimmer - It's fully automatic, has a host of features and will drive incandescent lamp loads up to 2400W.__ SiliconChip
Automatic Single-Channel Light Dimmer-Part 2 - Second (and final) article has all the construction and setup details.__ SiliconChip
Automatic Wash Basin Mirror Lamp Controller - In restaurants, auditoria and even homes, many a times we forget to switch off the wash basin mirror lamp after use. The circuit given here automatically switches on the wash basin...__ Electronics Projects for You
Automatically Turn Secondary Lamp On or Off - 28-May-09 EDN-Design Ideas A transformer and a relay are all you need to automatically turn a spare lamp on or off Design by Vladimir Oleynik, Moscow, Russia
Automotive Trafficator - The last variant on the oscillator is a circuit I built up to replace the standard auto trafficator flasher. __ Designed by Richard Torrens
Avoid pitfalls in dimming & shutting down CCFL backlighting for LCDs - 03/14/96 EDN Technical Article: Providing high-efficiency backlighting for LCDs is easier than it used to be thanks to ICs tailored for the purpose, but several elements of the circuit design still require care. Dimming and shutdown are two of them. Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke. He was 63. |
