The 555 timer is one of the most remarkable integrated circuits ever developed. It comes in a single or dual package and even low power cmos versions exist - ICM7555. ... 555 timer in astable operation

555 timer pin connections ... Remember that design formulae work in fundamental units. However, it is often more convenient to work with other combinations of units:

555 Timer Tutorials, timer, timing circuit, 555, ne555, ne556, time, 555 timer, 556 timer,ra, rb, astable, monostable, delay, oscillator, rc oscillator, vco, voltage control, rc ... 555 Animation

7) Pin 5--the Voltage Control pin of a 555 timer must be A.C. coupled!; ... the 555 timer has many uses--some yet to be discovered; who knows you may be the one to find even more uses for it.

The circuits below give the basic operating modes of the 555 timer ic. ... In this mode the 555 is used as a single-shot timer to produce an output of a fixed duration. The time period is set using

555 Timer, projects to build and forms to work out component values. ... Download 555 Timer Program for Windows

Some of the more attractive features of the 555 timer are: Supply voltage between 4.5 and 18 volt, supply current 3 to 6 mA, and a Rise/Fall time of 100 nSec.

A 555 set in the Astable mode is basically an oscillator. ... To see how you would make a circuit with a longer time on and shorter time off, work out this example: C1 = 10 microfarad (.00001

555 Timer as an A/D converte ... Use the formula: voltage = 26150/pulse + 2.5 . You will have to modify this to work within the limits of the Basic Stamp's math.

The 555 timer IC is quite useful in many different ways. Here is a simple diagram of how to use a 555 timer to work as an adjustable clock to run your circuit.