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MAINS OPERATED CHRISTMAS STAR - Here is an ease circuit of Christmas star that can be effectively built even by a beginner. The primary point of interest of this circuit is that it doesn't require any progression down transformer or ICs. Parts like resistors R1 and R2, capacitors C1, C2, and C3, diodes D1 and D2, and zener ZD1 are utilized to add to a genuinely enduring 5V DC supply voltage that gives the obliged current to work the multivibrator circuit and trigger triac BT136 by means of LED1. The multivibrator circuit is built utilizing two BC548 transistors (T1 and T2) and some inactive segments. The recurrence of the multivibrator circuit is controlled by capacitors C4 and C5 and resistors R3 through R7. The yield of the multivibrator circuit is associated with transistor T3, which, thusly, drives the triac by means of LED1. Amid positive half cycles of the multivibrator's yield, transistor T3 invigorates triac BT136 and the light shines.