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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.
beauty of synchronous-modulator/demodulator approach is its inherent noise
rejection. method rejects ….....(design idea added 08/05) |
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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 added 5/09) |
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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 full wave rectified voltage to the anode of
a SCR. Two small...(electronic circuit added 10/05) |
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125 Volt AC Lamp Dimmer Full Wave SCR - (circuit added 7/02) |
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12V high side PWM Motor/Light Controller - scroll down (circuit 6/07) |
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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....(added 4/02) |
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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....(electronic schematic / circuit added
05/09) |
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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 added 08/05) |
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230 Volt Dimmer - A reliable and efficient all-around performer. I bought
kit because it didn't cost me much more than components were worth and I also
got a nice professional-made PCB inside. As you can see, this is a tried-and-true diac
& triac combination that offers both simplicity and high performance. With a load up
to 3.5A, power rating is 750W at 230V. A heat sink on triac is a must!
....(added 11/05) |
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25-Pin PC Serial Port to MIDI Synthesizer Interface Cable - (circuit / schematic
design added 6/06) |
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4 Channel dimmer rack - (electronic circuit added 4/05) |
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8 Bit Digital Light Intensity Controller - (design circuit added 8/02) |
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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%.
(added 6/06) |
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ABR-42021/ Control Interface for Standard 0-10VDC Dimmers - Fairchild Application
Notes / (app note added 6/06) |
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Addressable DALI Dimming Ballast - (circuit / schematic design added 6/06) |
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AN809: Digitally Addressable DALI
Dimming Ballast App. - Microchip Application Note Published 10-Apr-02 (app note
added 6/06) |
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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%.
(added 6/06) |
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Basic Circuit optimizes PhotoTransistor Bandwidth - 04/09/98 EDN-Design Ideas:
(design idea added 3/03) |
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Control Interface for Standard 0-10VDC Dimmers/ ABR-42021 - Fairchild Application
Notes / (app note added 6/06) |
