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Most of viewers asked about FM transmitter circuit today I'm going to give you very small and some what powerful FM transmitter.The special thing of this circuit is we can operate this circuit with 3V.Here you can use BF414 / BF324 / BF606 transistor.

This is a simple Christmas Star circuit diagram.Here I have used common transistors.You can operate this circuit with 3-9 V.And another special thing is there are 18 LED s of this circuit so This circuit will give a wonderful look for your Christmas tree. Notice   # Don't give over 9V  # To get best result build this on a PCB

Today I'm going to give you a very useful circuit diagram.At present we can see many people are burning from electricity matters because at present many people have to pay a big electricity bill.I think if you can build up this circuit you can reduce your bill. Notice This is not suitable for the children Be careful when you deal with 230V