LED FLASHER ( About 1Year )

This is so useful circuit diagram for you Because this circuit can light up an LED about 1 year with 9V battery.Here I have used famous IC HEF 4093.






Note

# Use a white colour LED

# Build this on a PCB to get maximum result

# Use 9V battery to power this circuit

9V (2A) power supply circuit diagram

Lots of members asked about 9V dc power supply with 2A.So here We have introduce a new circuit diagram.This circuit can provide 9V 2A.I suppose now you all have some what good power supply with some what good amp level.This circuit operates with famous IC 7809.If I say simply this is a amp booster circuit.







Note

# Build this circuit on a PCB to get maximum result

# If you can attach a heat sink to the IC It will get a long life

Ding Dong Bell circuit diagram

This is a ding dong bell circuit diagram.I have attached this circuit for my house.Even you can use this circuit as an sound generator.When we buy this circuit from the market we have to spend much money but now you can build this your self.Here I have used common Ic Ne 555 and you can operate this circuit with 9V power supply.




Note

# Build this circuit on a pcb

# use 9V power supply to power this circuit

# When you deal with 230V be careful