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Digital Dimming DALI Ballast for 36w/T8 220V Input - This reference design is
a high efficiency, high power factor, digital dimming electronic ballast designed
to drive rapid start fluorescent lamp types. The design contains an active power
factor correction circuit for universal voltage input as well as a ballast control
circuit using the IR21592. The design also includes a PIC16F628 microcontroller
and an isolation circuit for connecting to a Digitally Addressable Lighting
Interface (DALI). (added 3/05) |
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Digitally Addressable DALI Dimming Ballast - (electronic circuit added 4/05) |
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Dimming DALI Ballast for 32w/T8 110V Input - This reference design is a high
efficiency, high power factor, dimming electronic ballast designed to drive rapid
start fluorescent lamp types. The design contains an active power factor
correction circuit for universal voltage input as well as a ballast control
circuit using the IR21592. The design also includes a PIC16F628 microcontroller
and an isolation circuit for connecting to a Digitally Addressable Lighting
Interface (DALI). (added 3/05) |
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Dimming DALI Ballast for 36w/T8 220V Input - This reference design is a high
efficiency, high power factor, dimming electronic ballast designed to drive rapid
start fluorescent lamp types. The design contains an active power factor
correction circuit for universal voltage input as well as a ballast control
circuit using the IR21592. The design also includes a PIC16F628 microcontroller
and an isolation circuit for connecting to a Digitally Addressable Lighting
Interface (DALI). (added 3/05) |
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Disturbance simulator checks lines - 10/14/00 EDN-Design Ideas: (design idea
added 5/05) |
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Dual Monostable Drives Quasiresonant Inverter - 02/17/97 EDN-Design Ideas: A
zero-voltage-switching (ZVS)controller usually integrates a one-shot circuit,
embodied in a VCO system. An error amplifier monitors the output voltage and
adjusts the VCO's off-time to keep the output value at a constant level. Each
on-time period commences as soon as the primary voltage drops to zero,.....(design
idea added 2/03) |
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Electronic Ballasts using the Cost Saving IR215x - App Note AN-995 from
International Rectifier (added 4/02) |
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Electronic Fluorescent Lamp Ballast - International Rectifier App Note in PDF
format (added 4/02) |
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Emergency Lighting Systems & Battery Powered Fluorescent Lighting - Zetec
Semiconductors Applications Notes An overview of the principles behind
typical emergency lighting systems, fluorescent tube behaviour, and the
requirements of the transistors for efficient voltage inversion. The note also
includes two "Royer" based designs for low voltage systems. (app note
added 2/06) |
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Enhanced Multi-mode CCFL Controller AN-33 - Application Note 33 from Microsem
(app note added 6/06) |
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Fluorescent Inverter - Build this 20 watt Fluoro Inverter, it drives two
20-watt tubes or a 40-watt tube!….(electronic circuit added 04/09) |
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Fluorescent Lamp Inverter - This inverter is very easy to construct, reliable,
and even powerful enough to light up a 15W florescent tube (if you cool your
transistor well). The only hard-to-find piece of this baby is the so-called yellow
inverter transformer. It's a miniature high frequency transformer that has a 25mm
x 20mm x 5mm ferrite core, 30 turns of primary, 15 turns of feedback, and 250
turns of secondary all concentric, wound on plastic frame than wrapped with a
'yellow' adhesive tape. If you can't find it in your local electronic shops then
search for old portable rechargeble florescent lanterns since they have at least
one yellow inverter. Of course you can wind a handmade transformer which would do
the same but it is a very difficult task when you don't have an original to
inspire and it will still need an appropriate ferrite core. ….(design added 11/08) |
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Fluorescent Lamps Ballasts & Fixtures - (circuit / schematic added 2/03) |
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Fluorescent Light - How to build a 4-Watts Fluorescent light using a
disposable camera, powered by one 1.5 Volts battery. (5/29/2006) |
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Half Bridge Inverter has Variable Frequency - 10/09/97 EDN-Design Ideas:
Modern electronic ballasts require added features, such as high-frequency preheat
for filaments, nominal lamp-power control, and light-dimming capability. Because
the output inverter operates in resonant mode, you can control the power or
current of these ballasts simply by varying the switching frequency. To vary the
frequency,.....(design idea added 2/03) |
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IR21571 Ballast Control IC Design Kit - The IRPLLNR2 is a high efficiency,
high power factor, fixed output electronic ballast designed for driving rapid
start fluorescent lamp types. The design contains an EMI filter, active power
factor correction and a ballast control circuit using the IR21571. This demo board
is intended to ease ....(added 3/05) |
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IR21592 Dimming Ballast Control IC Design Kit - The IRPLDIM1E is a high
efficiency, high power factor, dimming electronic ballast designed for driving
rapid start fluorescent lamp types. The design contains an EMI filter,active power
factor correction and a ballast control circuit using the IR21592. (added
3/05) |
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IRPLMB1e: 25w 230Vac Small Size Ballast using IR2520d - The circuit is built
around the IR2520D Ballast Control IC. The IR2520D provides adjustable preheat
time, adjustable run frequency to set the lamp power, high starting frequency for
soft start and to avoid lamp flash, fault protection for open filament condition
and failure to strike, low AC line protection and auto-restart after line brownout
conditions. line brownout conditions. (added 3/05) |
