Help me with building door bell circuit using 555 timer

[freewilly30]

door bell circuit

could any body help me to build a door bell circuit using 555 timer only no other ics

 

[flatulent]

Re: door bell circuit

What you do is have it in the astable mode with a speaker in series with a capacitor. These tow are placed one end to ground and one end to the 555 output (this is for a CMOS type. IF the output is an open collector, use a pull up resistor.) Then have the remote button be between the power supply and the +V power supply pin of the 555.