555 Timer based Circuits

	Pulse width modulation using 555. fixed frequency variable duty cycle 555. 555 watchdog for uC and uP systems. OR gate with two 555. Drive SCR thyristor with 555. LM555 Voltage Doubler. 555 based Reset Generator.
The Incredible 555 : These are some 555 circuits, The most versatile and simple chip of all time !. Some 555 circuits with source in the Cadsoft Eagle format are also here for editing and learning.   The best part of the 555 is that it has an voltage detection. It has a Versatile Logic which is defined by voltage comparators. The ability to loop it like an opamp for feedback makes it the first "Programmable" Mixed Chip. In short it make an ideal building block. Its drive is amazing, it can power small solenoids, lamps and relays. It is a Symmetrical output drive, means Source - push the pectrons into a node and Sink - pull the pectrons from a node. Conventional current is opposite to the flow of electrons.  Current flows from positive to negative, so let  me use a new word pectron, imaginary '+' electrons, not Positrons. Tutor Gadgets for 555 Astable 555 Timer LED Running lights 555_Circuits Anantha Narayan "Study .. Learn .. Examine.. Experiment .. Analyze .. Establish .. Realize" - Solderman    1658
	555 and 556 Timer Circuits. 555 Timer/Oscillator Tutorial 555 Timer 555 Timer Tutorials 555 Timer Projects by Andy Clarkson

Some Pages Require Adobe Acrobat Reader with Web Browser Integration Enabled.