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2. L Prize - Wikipedia

   en.wikipedia.org/wiki/L_Prize

   L Prize winning bulb on the right and its technological precursor on the left The original L-Prize Competition, launched in 2008, sought LED replacements for the common 60-watt light bulb. In late 2009, the L-Prize competition received its first entry, from Philips Lighting North America.

3. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

4. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   Instead of increasing current levels, luminance is usually increased by combining multiple LEDs in one bulb. Solving the problem of efficiency droop would mean that household LED light bulbs would need fewer LEDs, which would significantly reduce costs. Researchers at the U.S. Naval Research Laboratory have found a way to lessen the efficiency ...

5. AND gate - Wikipedia

   en.wikipedia.org/wiki/AND_gate

   The AND gate is a basic digital logic gate that implements the logical conjunction (∧) from mathematical logic – AND gates behave according to their truth table. A HIGH output (1) results only if all the inputs to the AND gate are HIGH (1). If all of the inputs to the AND gate are not HIGH, a LOW (0) is outputted.

6. Wired logic connection - Wikipedia

   en.wikipedia.org/wiki/Wired_logic_connection

   When driving a load, the HIGH output is reduced by the pull-up's voltage drop, though the LOW output is almost 0V. But if diode logic is used, each input requires a diode, and the LOW output voltage will additionally be raised by the diode's forward voltage. Care should be taken to ensure the output still lies within valid voltage levels.

7. Diode logic - Wikipedia

   en.wikipedia.org/wiki/Diode_logic

   A voltage source's output resistance and the subsequent gate's pull-up/down resistor form a voltage divider that weakens voltage levels. This decreases high voltages in OR gates and increases low voltages in AND gates. Thus the feasible amount of cascading is limited by the value of V F and the high-low voltage difference. With special designs ...