This is a circuit which blings two lamps. In this circuit we use one 40 w lamp , one 100 w lamp , and an automatic bulb which work as a switch. Connect the 100 w bulb and 40 w bulb series with supply line. Then connect the automatic bulb parallel to 40 w bulb. Then both the bulbs starts blinging, so we get chasing blinging of bulbs. It is suitable for decoration work, christmas decorations etc.
When the switch is on the L1 and L3 will glow. So there is no current in L2, since current will always flow through low resistance path. Then L3 starts heating up and due to heat the two arms in the bulb will bend away, so L2 will glow. L1 will not glow because when two bulbs are connected in series the bulb with low resistance will glow brighter. When the L3 cools down, the arm will come closer.So L1 and L3 glows again. And this process repetes so we get a chassing light.
- It is a simple circuit
- Economical
- Easy availablity of components
- Simple construction
- Rhythmic pattern
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