Initial fact: A schmitt trigger gate has two logic thresholds. They are refered to as the upper threshold point(UTP) and the lower threshold point(LTP). Starting from ground you must go above the UTP to get the gate to switch. After doing that you must go below the LTP to get the gate to switch back. Clear?Originally posted by Hurdy@Mar 3 2006, 01:25 PM
I have uploaded a circuit diagram of my counter circuit.
Could someone explain to me how the RC oscillator with the Schmit NAND gate works please?
Thank you for your time,
I'm going out on a small limb here, but I think K is a constant that depends on the LTP and the UTP.Originally posted by Hurdy@Mar 5 2006, 12:47 PM
Ok I have another question.
It says the frequency of the relaxation oscillator is calculated by the formula
f = 1 / KCR
Calculate the value of K.
What does K stand for?
C = 1uF
R = 850K ohm
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