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  1. #1
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    555 signal generator

    hi, everybody..

    I want to build a function generator by using 555 timer for signal generator and it capable of outputting a square wave with adjustable frequency in the ranges of 1Hz to 100Hz..
    If anyone have an idea please let me know...thanks for your cooperation..:D

    •   Alt15th September 2008, 02:53

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  2. #2
    Full Member level 6
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    555 function generator

    You will not get a symmetric square wave with only the 555 (50% duty cycle) and a variable output frequency will change the duty cycle also. Try another IC like XR2206.



    •   Alt15th September 2008, 23:17

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  3. #3
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    555 timer frequency generator

    Yo can connect a diode in parallel to the resistor between the pins 6 and 7 to achieve this.



    •   Alt16th September 2008, 01:19

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  4. #4
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    555 timer function generator

    http://hmin.tripod.com/als/

    Look in the Timers and Counters Section.
    There are 555 examples, but the TL494 circuits are
    more capable of 50% duty cycles. Root around.
    <als>



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