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It could be providing a negative feedback to alter the threshold of the inverter.
Eg, without resistor, the inverter theoretically will change state at Vcc/2. With resistor, there will be forming a hysterisis.
Hi, When a resistor is placed between the input and the output of an inverter it is a NEGATIVE FEEDBACK its role is to linearize the inverter to obtain an amplifier (an inpt resistance is needed.
Anyhow there is no threshold or hysteresis whitch is caracteristic on a positive feedback
Right, the moment there is a big resistor in parallel with an inverter, the resistor is acting as a DC short and ac open. Hence the inverter is forced to operate as a push-pull amplifier.
That’s the one in which the inverter have been mentioned above .I have the following questions:
First of all, what role does the inverter play? Does it transform the sine wave to square wave? Second, What role does the R3 play? How can I decide the value?
The last, What role does the part including SN65LVDS1 and SN65LVDS2 play? Can I use the signals in the output port of 74HC1G04 directly? What’s the advantages?
Thanks!
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