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Digitally Addressable DALI Dimming Ballast - (circuit / schematic
design added 6/06) |
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Digitally Addressable DALI Dimming Ballast App. - Microchip
Application Note Published 10-Apr-02 (app note added 6/06) |
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Digitally control room light intensity - 11-Nov-04 Issue of EDN
Many people favor different light and temperature settings for different rooms
depending upon their mood or whether they are working or relaxing. The circuit
in Figure 1 controls the intensity of the artificial light in a room and
monitors the temperature of two zones. The two main circuit blocks are the
PIC16C67 master controller and the ADT7516 temperature-sensor interface, which
includes a.... [Design Idea by Donal McNamara and Kieran Kelly, Analog
Devices, Limerick, Ireland] |
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Digital-Volume Control - This circuit could be used for replacing
your manual volume control in a stereo amplifier. In this circuit, push-to-on
switch S1 controls the forward (volume increase) operation of both channels
while a similar switch S2 controls reverse (volume decrease) operation of both
channels.….(design added 08/08) |
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Dimension Control - Add an effective New Dimension to your Stereo
soundIncrease Seperation and Reduce Noise....(Circuit design added 12/08)
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Dimmer Circuit for Normal Light Bulbs - (schematic / Circuit design
added 9/02) |
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Dimmer/Motor Speed Control - Lamp dimmers using traics can be quite
simple, nothing more than a potentiometer, resistor, capacitor and triac
with a built-in diac. (See Teccor's application note for examples and other
technical data.) The circuit below is similar....(electronic circuit added
7/03) |
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Disco Light Controller - (circuit / schematic design added 6/06)
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Discrete component motor direction controller - This circuit can
control a small DC motor, like the one in a tape recorder. When both the
points A & B are "HIGH" Q1 and Q2 are in saturation. Hence the bases of Q3 to
Q6 are grounded. Hence Q3,Q5 are OFF and Q4,Q6 are ON . The voltages at both
the motor terminals is the same and hence the motor is OFF. Similarly when
both A and B are "LOW" the motor is OFF. When A is HIGH and B is LOW, Q1
saturates, Q2 is OFF. The bases of Q3 and Q4 are grounded and that of Q4 and
Q5 are HIGH. Hence Q4 and Q5 conduct making the right terminal of the motor
more positive than the... |
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DIY remote control based on PIC - Control up to 8 devices by this
easy constructable remote control. It can work as a radio or infrared remote
control, depending on the components. Each device output can be configured to
be momentary (turned on while you press the button) or latched. Latched
outputs can be toggled on/off by one button per channel, or turned on and off
by two buttons per channel…. [Peter Jakab, Electrical Engineer, Engineer of
Informatics] |
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DMOS 3A, 55V, H-Bridge - National Semiconductor Application Note
(app note added 6/06) |
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Dog Detector for a Dog Flap on a door. - This circuit uses one tuned
coil for on the door and just a single wire loop on the animals collar. When
the two coils come close together, it produces a signal that can cause a an
LED to light and also trips a solenoid to unlock the door so it can open.
Since all these doors are somewhat different, I leave ….(Circuit design
added 3/08) |
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Dome Lamp Dimmer - This unique circuit makes your dome light look
cool. Usually when the car door is closed, the dome light just goes OFF. With
this circuit, you can have our dome light fade slowly….(electronic circuit
added 7/03) |
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Door mirror Controller - As for the recent car, the door mirror is
popular thing and the electromotion housing type is used usually. Even my car
is a door mirror type, but the electromotion housing function was not
attached.….(added 04/05/06) |
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Doorbell Indicator-Remote - This circuit should only be used with
the solenoid type chime doorbells, the electronic type that play tunes will
not work here. The hardest part for this circuit was the title. It is quite
easy to miss the sound of a doorbell if you are watching TV , this circuit
gets round the problem by providing a visual indication, i.e. a lamp.... by
Andy Collison] |
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Dremel Speed - The circuit at right uses a logi-level N-channel FET
driven directly by the PIC. The PIC creates a variable PWM signal to
power the motor. Motor current is sensed using a combined 0.5 ohm
resitance to ground. Since this ….(Circuit design added 08/08) [Luhan
Monat - Mesa Arizona] |
