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2. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   These circuits are called trailing-edge dimmers or reverse phase dimming. An even newer, but still expensive technology is sine-wave dimming , which is implemented as a high-power switched-mode power supply followed by a filter.

3. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   Leading edge modulation (top plot) uses a reverse sawtooth wave to generate the PWM. The PWM's leading edge is held at the leading edge of the window and the trailing edge is modulated. Trailing edge modulation (middle plot) uses a normal sawtooth wave to generate the PWM. The PWM's trailing edge is fixed and the leading edge is modulated.

4. Signal edge - Wikipedia

   en.wikipedia.org/wiki/Signal_edge

   A rising edge (or positive edge) is the low-to-high transition. [1] A falling edge (or negative edge) is the high-to-low transition. [1] In the case of a pulse, which consists of two edges: The leading edge (or front edge) is the first edge of the pulse. The trailing edge (or back edge) is the second edge of the pulse.

5. Talk:Dimmer - Wikipedia

   en.wikipedia.org/wiki/Talk:Dimmer

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6. Is Enron really back in business? Here's what to know. - AOL

   www.aol.com/enron-really-back-business-heres...

   In the long history of financial frauds, Enron ranks near the top of the list, with the once high-flying energy trading company suddenly unraveling in a web of lies and accounting sleight-of-hand.

7. Man, 66, who 'preyed on vulnerable children' jailed - AOL

   www.aol.com/man-66-preyed-vulnerable-children...

   A 66-year-old paedophile who sexually abused two girls more than 30 years ago has been jailed for 22 years. Kevin Calderbank carried out the sexual assaults in Peterborough between 1985 and 1989.