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Light Dimmer
Circuits, Page 1 Light Dimmer Circuits: # - CD - KL
- RS - Z Last Updated on:
Monday, October 03, 2011 06:07 PM
Links to electronic circuits, electronic schematics, designs
for engineers, hobbyists, students & inventors:
µC implements Pushbutton Light Dimmers - 06/18/98 EDN-Design
Ideas.....A project required building a synchronous-demodulator
circuit to track a line drawn on paper….File contains several
circuits, scroll to find this one..... [Design Idea by William
Grill, Riverhead Systems, Littleton, CO]
1.5 Hour Lamp Fader (Sunset Lamp) - The sunset lamp comes
on at full brightness and then slowly fades out over 1.5 hours time
and stays off until power is recycled…. [Design by Bill Bowden]
122 VAC Lamp Dimmer (full wave SCR) - 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 ....
12V PWM Motor/Light Controller - The diagrams are for 12V
operation only and there are high side (common ground) and low side
(common +12V) versions. The low side version of the circuit uses an
N Channel FET.... [G. Forrest Cook]
14 Volt Lamp Dimmer (using a pot) - Here is a 12 volt / 2 amp lamp
dimmer that can be used to dim a standard 25 watt automobile brake or backup
bulb by controlling the duty cycle of a astable 555 timer oscillator. When the
wiper of the potentiometer is at the uppermost position, the capacitor will
charge quickly through both 1K resistor.....(added 4/02)
14 Volt Lamp Fader (LEDs or incandescent) - 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.....(electronic
schematic / circuit added 05/09)
2 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 darkens instrument panel.… [Design
Idea by Kevan O'Meara, KO Systems, Chatsworth, CA]
230 Volt Dimmer - Find out how to put together a simple but efficient
PWM dimmer circuit for LEDs…. [REUK - Renewable Energy UK website]
A Ballast that can Be Dimmed from a Domestic Phase Cut Dimmer. - A
system has now been developed, based around IR2156, where ballast is
able to operate with minimal flicker over a considerable portion of
adjustment range of a dimmer and light output may be controlled over this
range from maximum output down to around 10%. (added 6/06)
AN809: Digitally Addressable DALI
Dimming Ballast App. - Microchip Application Note Published
10-Apr-02.....[App Note]
Ballast that can Be Dimmed from a Domestic Phase Cut Dimmer. - A
system has now been developed, based around IR2156, where ballast is
able to operate with minimal flicker over a considerable portion of
adjustment range of a dimmer and light output may be controlled over this
range from maximum output down to around 10%. (added 6/06)
Basic Circuit optimizes PhotoTransistor Bandwidth - 04/09/98 EDN-Design
Ideas.....A simple circuit can improve the dynamic performance of a
phototransistor for use in low- to medium-speed applications as fast as 100
kbps, such as optical isolation of an RS-232C serial line (Figure 1]. In
low-cost applications.....contains many circuits, scroll to this one.....
[Design Idea by David Magliocco, CDPI, Scientrier, France]
