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Lamp / Light Control Circuits
Lamp Controls:   #'s - B       C - K       L - M       N - S       T-Z


Last Updated: October 24, 2017 02:55 PM

Circuits Designed by Dave Johnson, P.E. :

Incandescent Lamp Inrush Current LimiterThis circuit limits the large inrush current often associated with large incandescent lamps.  With the components shown the current is limited to 1 amp, but it could be scaled to any desired current. . . Circuit by David A. Johnson P.E.-July, 2006

Increased power for LED FlasherPower LEDs are becoming more popular these days.  The DC input power to these devices ranges from 1 watt to 5 watts.  Normal LEDs only receive about 0.05 watts.  At this higher power, these devices can emit a lot of light . . . Hobby Circuit designed by David A. Johnson P.E.-August, 2008

Inrush Current Limiter for a nIncandescent Lamp This circuit limits the large inrush current often associated with large incandescent lamps.  With the components shown the current is limited to 1 amp, but it could be scaled to any desired current . . . Hobby Circuit designed by Dave Johnson P.E.-July, 2006


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

IC Controlled Emergency Light with Charger -  White LEDs are replacing the conventional incandescent and fluorescent bulbs due to their high power efficiency and low operating voltage.  These can be utilised optimally for emergency lamp and vehicle turning...__ Electronics Projects for You

Idea for a Low Voltage Light Dimmer -  A light dimmer is a means of controlling the "brightness" level of a lamp, in this application we will use a555 Timer to control the brightness level of a low voltage incandescent bulb of up to 60-Watts.  For the light dimmer to work the555 Timer is configured as a "variable cycle", astable oscillator running some where around300 Hz

Illumination Ring Provides Focused Intensities -  9-Jul-09 EDN-Design Ideas Light up an area for optical inspection using LEDs under PWM control __ Circuit Design by William Grill, Honeywell Aerospace, Olathe, KS

Incandescent Lamp Cycler -  This circuit modulates the brightness of a small incandescent lamp in a continuous rising and dimming cycle, with the objective of optimizing the aesthetic appearance of the intensity changes.  The lamp used in this application is the miniature low-voltage type 1892, rated at 14.4V, 0.12A, and 0.75 mean spherical candle power.  The lamp's modest level of brightness allows the direct observation of the bulb without eye discomfort.  Control of lamp intensity is achieved by phase-modulation of the AC line voltage, greatly reducing waste power, as compared with circuits employing DC techniques.  The circuit may easily be adapted for driving a multitude of paralleled 1892 lamps, or with the appropriate selection of transformer T2, many other types of incandescent lamps.   __ Designed by Arthur Harrison

Incandescent Lamp Inrush Current Limiter -  This circuit limits the large inrush current often associated with large incandescent lamps.  With the components shown the current is limited to 1 amp, but it could be scaled to any desired current. . . Circuit by David A. Johnson P.E.-July, 2006

Increased power for LED Flasher -  Power LEDs are becoming more popular these days.  The DC input power to these devices ranges from 1 watt to 5 watts.  Normal LEDs only receive about 0.05 watts.  At this higher power, these devices can emit a lot of light . . . Hobby Circuit designed by David A. Johnson P.E.-August, 2008

Inexpensive LED Drives Flash & Beep -  06/05/97 EDN-Design Ideas Sometimes, you need an alarm that is both audible and visible in an application that's stingy with space, power, and budget.  The circuit in Figure 1a is compact, efficient, and inexpensive.  The F336HD flashing LED  (part no.276-036 at Radio Shack) is a useful device.  It operates directly from 5V and produces a consistent pulse of light at approximately 1 Hz without a time-constant capacitor.    __ Circuit Design by Dennis Eichenberg, Parma Heights, OH

Inrush Current Limiter for a nIncandescent Lamp  -  This circuit limits the large inrush current often associated with large incandescent lamps.  With the components shown the current is limited to 1 amp, but it could be scaled to any desired current . . . Hobby Circuit designed by Dave Johnson P.E.-July, 2006

Interior light extender -  All modern cars are fitted with door-switch operated courtesy lights.  Useful devices, but not quite as useful as they might be because they are so arranged that the light is extinguished as soon as you close the doorjust when you need light to find the ignition switch.  do up your seat belt etc.  How much better if the internal light stayed on for a few seconds after the door is closed.   This little project does just that.  It provides a four-second delay  (approx) after which the interior light slowly dimsbeing finally extinguished after 10 or 12 seconds.   The unit is very simple to construct and once tested and properly insulated it may be wired across one of the car door switches.   In operation, after a short delay the lights will gradually dim until they are completely extinguished.  There is no battery drain in the off-state as the unit only operates during the delay period after the door is closed.__ CdS Electronic

Inverter for fluorescent lights as published in Silicon Chip Magazine February 1991 -  Simple and Useable to play with, But not practical and a Waste of time and Money.  Not Near as Efficient as my Mos-Fet Inverter below.   __ Designed by G.L. Chemelec

Inverters to power fluorescent lamps from Low voltage DC -  This is a collection of non-intelligent  (at least for now) inverter circuits for operating fluorescent or other similar devices from low voltage DC power sources.  These designsmostly obtained by reverse engineering commercial camping lanterns, power inverters, and the likeare all very basic circuits which use simple oscillators, easy to obtain or construct transformers, and common power semiconductors.   __ Designed by 1997 Samuel M. Goldwasser

IR Light Dimmer V.1 -  This device is constructed for IR remote Controll of Light Bulbs, and for remote controller can be used any device from TV, VCR or audio __ Designed by Ivica Novakovic

IR Light Dimmer v.1 SMD -  Dimming The Lights with remote controller, device Ir Light Dimmer, has got a new and simplest version.  The most significant change is microcontroller PIC12F629 in Small-Outline Integrated Circuit  (SOIC) package, TSOP2238 ir receiver instead of TSOP1738, and less components on circuit board. __ Designed by Ivica Novakovic

IR Light Dimmer V.2 -  IR remote controlled Light Dimmercomplete device mounted in switch lightthe easiest and fastest way to mount your Light Dimmer __ Designed by Ivica Novakovic

IR21571 Ballast Control IC Design Kit -  The IRPLLNR2 is a high efficiency, high power factor, fixed output electronic ballast designed for driving rapid start fluorescent lamp types.  The design contains an EMI filter, active power factor correction and a ballast control circuit using the IR21571.  This demo board is intended to ease

IR21592 Dimming Ballast Control IC Design Kit -  The IRPLDIM1E is a high efficiency, high power factor, dimming electronic ballast designed for driving rapid start fluorescent lamp types.  The design contains an EMI filter, active power factor correction and a ballast control circuit using the IR21592.  

IR-Based Light Control -  This circuit turns on the lights at the portico, car parking or other areas when a motorbike or car enters through the gate to cross the sensing area.  It can also...__ Electronics Projects for You

IRPLMB1E: 25W 230VAC Small Size Ballast using IR2520D -  The circuit is built around the IR2520D Ballast Control IC.  The IR2520D provides adjustable preheat time, adjustable run frequency to set the lamp power, high starting frequency for soft start and to avoid lamp flash, fault protection for open filament condition and failure to strike, low AC line protection and auto-restart after line brownout conditions.  line brownout conditions.  

Japanesque Ceiling Light -  This is a Japanesque ceiling light without any electronics.  Everybody will able to build easy even if they have no electronic skill.   __ Designed by The Electronic Lives Manufacturing-presented Chan

Jumbo Flashing LED Lights -  This is a flashing led lights circuit powered from a 12V DC power supply that uses the well known 555 IC.  Flashing lights have many and varied applications in life.  They are used as warning lights on highways to increase road safety, as beacons on towers, as advertising signs on shop windows, and so on.  Mechanically operated __ Designed by T.K. Hareendran

Knight Rider Lights-LED Chaser -  I don't know why, but people like blinking lights.  You see LED chasers everywhere, in TV shows    (Knight Rider) , movies, and store windows.  This schematic is my version of a simple 10 LED chaser.  There is no 555 timer used because __ Designed by Aaron Cake

Knight Rider Look-a-like Lights -  12 Volt Knight Rider, "Look-A-Like", Lighting Systems Revised "JAN.2, 2008"  (Errors on Knight-3, Corrected)  __ Designed by G.L. Chemelec

Knightrider lights for Model cars -  This simple circuit drives 6 LEDs in 'Knightrider scanner mode'.  Power consumption depends mainly on the type of LEDs used if you use a 7555  (555 CMOS version) . __ Contact: IQ Technologies

Kodak Max flash unit -  Schematic for the Kodak Max flash unit __ Designed by Don Klipstein

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Lamp Controls:   #'s - B       C - K       L - M       N - S       T-Z

 


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