enter image description hereWhat is the meaning of having 2 series inverters, one with the switching threshold at 1.025 V and the other with the threshold at 0.3V?

What does this difference between the switching levels mean?

The circuit has a sine wave at the input of the inverters and it makes a clock signal from 1.8V to 0V.

Thank you!


1 Answer 1


Switching threshold means inverter is working when the input more than threshold (kind a comparator) . So In your circuit 1.035v inverter's duty cycle is %43.5 other's duty cycle is %83.If you want %50 duty cycle you should chose a inverter with 0.9V switching threshold.Also if you connect these inverters parallel they short circuit each other because of phase difference (one is positive when the other negative (or ground))

  • \$\begingroup\$ they are in a series connection \$\endgroup\$
    – tairit
    Commented Sep 1, 2019 at 17:58
  • \$\begingroup\$ Can you add circuit's schematic ? Is it like this : Input>1.035v inverter>0.3V inverter>output \$\endgroup\$
    – Mordecai
    Commented Sep 1, 2019 at 18:00
  • \$\begingroup\$ picture added. Q1 is the signal coming from an quartz \$\endgroup\$
    – tairit
    Commented Sep 1, 2019 at 18:03
  • \$\begingroup\$ I don't want to lose my time for circuit analysis so which ones inverter (1.035v ) and inverter (0.3v) ? \$\endgroup\$
    – Mordecai
    Commented Sep 1, 2019 at 18:08
  • \$\begingroup\$ the first is 1.035v and the second is 0.3V \$\endgroup\$
    – tairit
    Commented Sep 1, 2019 at 18:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.