|
Lamp / Light Control Circuits Page 7
Lamp Controls: #'s A
B-C D E-F
G-K L M-N
P-R S
T-U V-Z
Last Updated on:
Friday, July 18, 2008 11:33 AM
|
|
| Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors: |
|
Lamp Dimmer : This must generate an awfull lot of RFI without a choke! The house wiring supplies the di/dt limiting. This is a
CHEAP design which exhibits hysterisys at dim settings. Not everything made and sold to the public is top notch. (added 2/05) |
|
Lamp Flasher/Dimmer: (schematic / circuit added 10/02) |
|
Lantern Flasher/Dimmer #1: (circuit / schematic added 2/03) |
|
Lantern Flasher/Dimmer #2: Add this circuit to an existing lantern or and your batteries will last much longer, PDF file (added
4/02) |
|
Laser Pointer Train Detector: (electronic circuit added 7/03) |
|
LED Buck PFM: Powers LED with Constant Current Starting at 100MV over VF: This is a proof of concept circuit which needs
improvement. The part values shown will run a high efficiency red LED with a Vf of 1.9V from only 2 nicads, right down to 2 volts. For a white LED you will need more batteries and you must
increase the 1.0K resistor to a higher value. Current sensing at a mere 18mV over 1ohm makes this stepdown switcher efficient, but efficiency can be increased by using a larger inductor, improving
transistor switching speed, or by increasing the value of the 1.0K resistor. ... (added 2/05) |
|
LED Dimmer uses Only Two Lines: 03/21/02 EDN Design Ideas / (added 1/05) The circuit in Figure 1provides 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 Max package. ... |
|
LED
Driven Tail/Brake Light Cluster: LED driven tail/brake Light Cluster Constant current circuitry 12V Battery operation (added 3/05) |
|
LED Headlamps : This article includes circuits of DC-DC LED drivers step downs to run LEDs on less than Battery Volts, Boost
for above. (added 4/02) |
|
LED
Light Dimmers uses Only Two Lines: 03/21/02 EDN-Design Ideas / (added2.06) -The circuit in Figure 1 provides 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. Although Figure 1 shows
the circuit driving white LEDs,... |
|
LED Mood Light: (electronic circuit added 7/03) |
|
LED Night Light for 120Vac : Reverse engineered circuit diagram of an LED night light made by a north american manufacturer.
Remarkably it only draws 100mW and has some surge voltage immunity. A clear plastic light pipe is used to diffuse the light from the LED into the room. I do not gaurantee the accuracy or safety of
any information herein.
(added 2/05) |
|
LED Pilot Light (AC or DC): LED current is constant between 6 and 8 mA at5 to30Vdc (added 4/02) |
|
LED7 Solar Tracker: (electronic circuit added 7/03) |
|
Light a White LED from Half a Cell: 06/12/03 EDN Design Ideas / (added 1/05) Whether you use them as
indicators or to provide illumination, LEDs are hard to beat in efficiency, reliability, and cost. White LEDs are rapidly gaining popularity as sources of illumination, as in LCD backlights, but
with forward voltages typically ranging from 3 to 5V, operating them from a single cell presents obvious difficulties.... |
|
Light Bulb Voltage Regulator : (circuit added 7/02) |
|
Light Chaser: (electronic circuit added 7/03) |
|
Light Controlled Switch #2: output a control signal suitable for relay depending on the light level (added 4/02) |
|
Light Dimmer Circuit with 0 to 10 Volt Input: This is a simple dimmer circuit that can be controlled with0 -10 VDC. It is designed
for110-Volt AC. (added 4/02) |
|
Light Organ for Car: flashes3 low voltage lights, operates at10-25-Volt voltage, in PDF format, text in Finnish (added 4/02) |
|
Light Processor 434 Piano Touch Panel: circuit diagram in PDF format, check also power supply circuit diagram (added 4/02) |
|
Light/Dark Detector: (electronic circuit added 7/03) |
|
Lighting System: how to inexpensive, portable lighting system that add a great deal of ambiance to the music performance,
includes simple controller circuit (added 4/02) |
|
Lightkeeper Automotive Lighting Control Module: Microchip Application Note Published 27-Mar-02 (app note added
2/06) |
|
Linear Constant Current LED Lamp Dimmer: This circuits drives24 white light LEDs with an adjustable constant current. (added
4/02) |
|
Low Cost Converter Drives Fluorescent Tubes: 03/31/94 EDN-Design Ideas / (added 03/03) In the last few months, several
designers have published circuits for cold-cathode fluorescent-tube (CCFT) power supplies, and a specialized power-supply IC is also now available. However, a significant number of CCFT
applications don't require the complexity and expense of a dual-FET resonant approach. Applications such as electronic night-lights, backlights for industrial equipment, such as gas pumps or
signs, simply can't justify the cost of building a resonant supply. The low-cost circuit in Fig 1 produces a small, very reliable drive for many of the smaller CCFT tubes.... |
|
|
|
Low Cost Non-Dimming 220V Ballast Design / AN-42001: Fairchild Application Notes / (app note added 6/06) |
|
Low loss circuit Powers solar lantern: 04/01/04 EDN Design Ideas / (added 1/05) The solar-lantern circuit in
Figure 1 is a low-loss configuration that uses a 7W, four-pin CFL (compact fluorescent lamp) and a 12V, 7-Ahr, sealed, maintenance-free battery. The inverter features greater-than-85% efficiency,
less-than-2-mA quiescent current, and a shunt-charge controller with deep-discharge and overcharge protection for the battery.... |
|
Low Power Crossing Light Flashers (LM556) (E+F): (circuit / schematic design added 6/06) |
|
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. (added 7/03) |
|
Lx 800 Lighting System: (electronic circuit added 7/03) |
| Next Page L |
|
Lamp Control Circuits: #'s
A B-C D
E-F G-K L
M-N P-R S
T-U V-Z |
