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Sequential Timer Circuit Diagram using NE555 Precision Timer IC

Datasheet and Circuit Diagram, Posted by: admindata at November 20th, 2009

A sequential timer circuit device are used in many applications for initializing conditions during start-up or for activation of test signals in sequences such in test equipment device. The circuit diagram below shows a sequencer circuit with possible applications in many sistems.

Sequential Timer Circuit Diagram using NE555

As you can see, it uses the NE555 precision timer IC which capable of producing accurate time delays or oscillation. These timing circuits can be connected to provide such sequential control with various combinations of astable or monostable circuit connections. You can used it with or without modulation for extremely flexible waveform control.

You may see the NE555 Datasheet here (source: ti.com)

Tags: NE555, Precision Timer, Sequential Timer Circuit,


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One Response to “Performance and Characteristics of CT2 Counter/Timer Module”

  1. Mustafa Says:
    March 20th, 2013 at 8:20 am

    Hi, this is a great design. i want to connect 4 or 5 NE555 chips instead of three. What would the value for capacitor C(d) be and how do you calculate it?

    Also, if I want to control the speed of the timer, can I replace the 100KOhm resistors with a pot?

    Thank you kindly.

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