Recent content by ajbriggs

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    Calculate Cut-Off Frequency for Low Pass Filter w/ 2 Op-Amps

    How do I work out the cut-off (corner) frequency of a Low Pass Filter? I know the equation is fc = 1/(2∏(fn)RC) but I have 2 op-amps in the filter both with different fn's, R's and C's is it simply calculate each part separately and add the 2 values together? Cheers
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    END;Solve 8-Digit Display Error in Boolean Expressions for Student ID Assignment

    I am designing a 7 segment display device to display an 8 digit number The number is: 18008101. I'm using a 555 time circuit for the clock pulse which is connected form output (pin3) to input/clock (pin1) Lattice GAL22V10D, working fine as the number changes on every pulse. However the...
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    How to turn on & off an LED continously for 1 second?

    Hi Bud, Use the 555 timer circuit attached and this website for resistor and capacitor values kpsec.freeuk.com/555timer.htm