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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. |
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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. |
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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] |
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230 Volt Dimmer - Find out how to put together a simple but
efficient PWM dimmer circuit for LEDs…. [REUK - Renewable Energy
UK website] |
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25-Pin PC Serial Port to MIDI Synthesizer Interface Cable
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4 Channel dimmer rack |
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8 Bit Digital Light Intensity Controller |
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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%. |
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ABR-42021/ Control Interface for Standard 0-10VDC Dimmers -
Fairchild Application Notes |
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Addressable DALI Dimming Ballast |
| AN809: Digitally
Addressable DALI Dimming Ballast App. - Microchip Application
Note Published 10-Apr-02.....[App Note] |
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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%. |
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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] |
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Control Interface for Standard 0-10VDC Dimmers/ ABR-42021 -
Fairchild Application Notes |
