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Light Dimmer Circuits
Light Dimmer Circuits:  #'s - K     L - Z

 

Last Updated: November 30, 2017 07:41 AM


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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__ 

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 Dimmer - complete device mounted in switch light - the easiest and fastest way to mount your Light Dimmer __ Designed by © Ivica Novakovic

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.  __ 

Lamp Dimmer Full Wave SCR (120 Volt AC) -  The full wave phase control circuit below was found in a RCA power circuits book from 1969.  The load is placed in series with the AC line and the four diodes provide a full wave rectified voltage to the anode of a SCR.  Two small signal transistors are connected in a switch configuration so that when the voltage on the 2.2uF capacitor reaches about 8 volts, the transistors will switch on and discharge the capacitor through the SCR gate causing it to begin conducting.  The time delay from the beginning of each half cycle to the point where the SCR switches on is controlled by the 50K resistor which adjusts the time required for the 2uF capacitor to charge to 8 volts.  As the resistance is reduced, the time is reduced and the SCR will conduct earlier during each half cycle which applies a greater average voltage across the load.  With the resistance set to minimum the SCR will trigger when the voltage rises to about 40 volts or 15 degrees into the cycle.   __ Designed by Bill Bowden

Lamp Dimmer-120 VAC -  The full wave phase control circuit below was found in a RCA power circuits book from 1969.  The load is placed in series with the AC line and the four diodes provide a full wave rectified voltage to the anode of a SCR.  Two small signal transistors are connected in a switch configuration so that when the voltage on the 2.2uF __ Designed by Bill Bowden

Lantern Flasher/Dimmer -  Basically a high-efficiency dimmer, but can also be used as a flasher.  In dimmer mode, the LM358 (dual op-amp) is wired to send pulses at a constant frequency.  By adjusting the width of these pulses, brightness of the bulb is controlled.  In flasher mode, the same potentiometer is used to control the frequency, from about 1 to 20 flashes per second__ copy of geocities.com/tomzi.geo page

Lantern Flasher/Dimmer -  The electronic lantern control circuit (fig.1) adds high-efficiency dimming and flashing to an existing battery-powered lantern or flashlight or to a custom design.  For the car it makes a great lamp for changing a flat tire, back seat reading or emergency engine work.  The flasher mode is useful for warning other drivers __  Contact: Charles Wenzel of Wenzel Associates, Inc.

Lantern Flasher/Dimmer -  The electronic lantern control circuit adds high-efficiency dimming and flashing to an existing battery-powered lantern or flashlight or to a custom design.  For the car it makes a great lamp for changing a flat tire, back seat reading or emergency engine work.  The flasher mode __ Designed by Tony van Roon  VA3AVR

LED Dimmer -  Find out how to put together a simple but efficient PWM dimmer circuit for LEDs.   __ Designed by REUK-Renewable Energy UK website

LED dimmer uses only two lines -  03/21/02 EDN-Design Ideas - The circuit in Figure 1provIdeas 32 steps of brightness control-from 0 to 100%-for a backlight or instrument panel, using just two general-purpose-microprocessor signals.  In addition, the circuit requires little board space, because it uses only three SOT-23s and one µMax package __ Circuit Design  by Jerry Wasinger, WallyWare Inc, Norcross, GA

LED or Incadescent 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

Light Dimmer -  This little circuit can be used to dim lights up to about 350 watts.  It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat.  Please note that this circuit cannot be used with fluorescent lights.   __ Designed by Aaron Cake

Light Dimmer that Doubles as Voltmeter -  Measure AC mains voltage without using a multimeter.  All you need to do is to slightly modify the light dimmer fitted at the base of a table lamp for use as...__ Electronics Projects for You

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__ 

PC controls light dimmer -  08/19/99 EDN-Design Ideas - Control one light dimming from PC - Using the simple circuit in Figure 1 , you can control the light intensity in your room or work area from your PC.  The heart of the circuit is a low-power D/A converter that converts digital words from a computer's parallel port to analog-voltage signals.    __ Circuit Design  by Afshin Mellati

Special Effects from a Six Pack -  Four channel Sequencer to Analog Dimmers and idea how to couple relay to the circuit__ 

The Inexpensive Dimmable LED Desk Lamp -  30-Nov-12 -Design News:   Andrew Morris designed a dimmable LED driver circuit that is simple and energy efficient.  He then installed the circuit into a portable fluorescent lamp. __ Designed by Andrew R. Morris, Gadget Freak-Case #230

Touch and/or Remote Controlled Light Dimmer -  Old-fashioned light dimmers with knobs are passe! This one dims up or down at a touch or you can use an infared remote control.__ SiliconChip

Touch and/or Remote Controlled Light Dimmer-Part 2 -  Completing the construction and building the touchplate and pushbutton dimmer extensions.__ SiliconChip

Touch Dimmer -  By simply touching this touch dimmer you can increase the light intensity of incandescent lamps in three steps.  The touch dimmer is built around 8-pin CMOS IC TT8486A/TT6061A specifically manufactured for...__ Electronics Projects for You

TRIAC Dimmable 20W Offline LED Driver using the LT3799 -  This circuit shows a complete LED driver solution.  The LT3799 senses the output current from the primary side switch current waveform.  The IC regulates the output current by adjusting the peak switch current and the duty cycle through a novel feedback control.  Unlike other primary side sensing methods that need to know input power and output voltage information, this new scheme provides much better output current regulation since the accuracy is barely affected by transformer winding resistance, switch RDS (ON) , output diode forward voltage drop and LED cable voltage drop__ Linear Technology/Analog Devices App Note, Jul 1, 2011

TRIAC Light Dimmer -  This little circuit can be used to dim lights up to about 350 watts.  It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat.  Please note that this circuit cannot be used with fluorescent lights.   __ Designed by Aaron Cake

TRIAC Light Dimmer -  Schematic only, no circuit description __ Contact IQ Technologies

Two-wire DC Lamp Dimmer replaces Rheostats -  10/23/97 EDN-Design Ideas - Originally for use in commercial trucks, a low-cost dc lamp dimmer (Figure 1) can control more than 100W of incandescent panel lighting and replaces a high-power rheostat, whose heating darkensinstrument panel.   __ Circuit Design  by Kevan O'Meara, KO Systems, Chatsworth, CA

Using a Light Dimmer IC for AC Motor Speed Control -  This circuit example uses LS7231 Light Dimmer IC__ LSI Computer Systems

Varying Brightness AC Lamp -  In this circuit, an SCR is used to slowly vary the intensity of a 120 volt light bulb by controlling the time that the AC line voltage is applied to the lamp during each half cycle.  The circuit is directly connected to the AC power line and should be placed inside an enclosure that will prevent direct contact with any of the components.  To avoid electrical shock, do not touch any part of the circuit while it is connected to the AC power line.  A 2K, 10 watt power resistor is used to drop the line voltage down to 9 volts DC.  This resistor will dissipate __ Designed by Bill Bowden

White LED driver provides 64 step logarithmic dimming -  10-Jun-04 EDN-Design Ideas - The circuit of Figure 1 is designed for portable-power applications that require white LEDs with adjustable, logarithmic dimming levels.  The circuit drives as many as four white LEDs from a 3.3V source and adjusts the total LED current from 1 to 106 mA in 64 steps of 1 dB each.  The driver is a charge pump that mirrors the current ISET (sourced from IC3's SET terminal] to produce a current o __ Circuit Design  by William Hadden, Maxim Integrated Products, Sunnyvale, CA


Light Dimmer Circuits:  #'s - K     L - Z


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