Delay circuit for a long time periods ( 4060 )


Posted on Apr 28, 2012

If you need a timer circuit, we go after the most proven 555th However, if the delays are longer, based on timing capacitor capacity is too large. In this case, a circuit of Figure 1 After pressing the button - reset circuit - starts multivibrator.


Delay circuit for a long time periods ( 4060 )
Click here to download the full size of the above Circuit.

It vibrates so long to fill the output Q14 of the counter and moves to the level of H. multivibrator to produce pulses 8192 (2 13 ). Through the diode is then locked oscillator and a timer waiting for the next reset. Everything is clear from the timing diagram.




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