E26 3-way 2-circuit two filaments led bulb, 3 way led bulb for 3-way 2-circuit switch Socket Interior. A really 3 way light bulb has two filaments, a low and a high wattage one, and the switch has 4 positions: Off, Low, High, Both. If you hope finding good 3-way LED bulb in three-way socket desk lamp which has 3 way turn knob socket switch, First must to know how a 3 ways light bulb work with 3-Way Turn Knob Lamp Socket. The animation below shows you how a 3-way 2-circuit switch socket works with a 3 ways led bulb.
3 ways led bulb vs Scene switch LED Bulb vs 3-step dimming LED bulb
How do I finding good 3 ways led bulb in 3 ways desk lamp which has 3 ways turn knob switch socket?
A 3-way lamp requires a 3-way bulb and 3 ways socket, and a 3-way switch, Or 3 way socket which has 3-Way Turn Knob switch Interior.
The switch used to control a 3-way lamp is usually a rotary switch or a pull-chain switch. Although it is referred to as a 3-way switch, it has four positions, off, lamp one (low), lamp two (medium), and lamps one and two (high). When properly connected to a 3-way socket containing a 3-way bulb, this switch will first power one filament, then the other filament, then both, then return to the off position. To do this, the switch must be capable of operating two different circuits. Internal to the switch there are two sets of switch contacts that are not connected electrically, but which are connected mechanically in such a way that they operate together as shown in this table.
Lamp function Switch one Switch two
Off Off Off
Low, lamp one On Off
Medium, lamp two Off On
High, lamps one and two On On
Below image is a real E26 3 way 2 circuit two filaments replacement, E26 3 way 2 circuit two filaments led.
