hi ak,Need a ckt diagram of buck boost converter using ic555
Welcome to ETO.
I see you are from India; care to put that next to 'Location' on your user page so that it displays in the window at the left of your posts.
You say that you want a circuit for an LM555 based buck boost power supply: afraid that is not enough information for us to give you a realistic answer. We need to know at least the following:
(1) Use of circuit
(2) Input voltage and current available (power supply for LM555)
(3) Output voltage range required
(4) Output current range required
Crossed posts Eric
http://1.bp.blogspot.com/-1bxDayOZ4U8/VVMiLmd8UoI/AAAAAAAAKNU/0zcjx5AaIZo/s1600/buck%2Bboost.pngCare to show us the circuit?
What simulator are you using?