I recently read this article on button debouncing: A Guide to Debouncing - Part 2, or, How to Debounce a Contact in Two Easy Pages, by Jack Ganssle.

The article is on choosing the correct resistor and capacitor for your debounce circuit.

In the article, after calculating a (seemingly good) value of one of the resistor he goes on to say this :

But. the analysis ignores the gate's input leakage current. A CMOS device like the 74AHCT14 dribbles about a microamp from the inputs. That 180K resistor will bias the input up to .18 volts, uncomfortably close to the gate's best-case switching point of 0.5 volt. Change C to 1 µF and R2 is now 18K.

I am only beginning with electronics, so I can only guess what thats supposed to mean. And my best guess is that the leakage current is somehow effecting us in a bad way. It will be a big help if someone can give me an explanation on what this section. I prefer to know what I am doing, if I am doing it.

I recently read this article on switch debouncing: A Guide to Debouncing - Part 2, or, How to Debounce a Contact in Two Easy Pages, by Jack Ganssle.

The article is on choosing the correct resistor and capacitor for your debounce circuit.

In the article, after calculating a (seemingly good) value of one of the resistor he goes on to say this :

But. the analysis ignores the gate's input leakage current. A CMOS device like the 74AHCT14 dribbles about a microamp from the inputs. That 180K resistor will bias the input up to .18 volts, uncomfortably close to the gate's best-case switching point of 0.5 volt. Change C to 1 µF and R2 is now 18K.

I am only beginning with electronics, so I can only guess what that's supposed to mean. And my best guess is that the leakage current is somehow affecting us in a bad way. 

It will be a big help if someone can give me an explanation on what this section. I prefer to know what I am doing, if I am doing it.

I recently read this article on button debouncing  : http://www.ganssle.com/debouncing-pt2.htm The article is on choosing the correct resistor and capacitor for your debounce circuit.

In the article, after calculating a (seemingly good) value of one of the resistor he goes on to say this :

But. the analysis ignores the gate's input leakage current. A CMOS device like the 74AHCT14 dribbles about a microamp from the inputs. That 180K resistor will bias the input up to .18 volts, uncomfortably close to the gate's best-case switching point of 0.5 volt. Change C to 1 µF and R2 is now 18K.

I am only beginning with electronics, so I can only guess what thats supposed to mean. And my best guess is that the leakage current is somehow effecting us in a bad way. It will be a big help if someone can give me an explanation on what this section. I prefer to know what I am doing, if I am doing it.

Appreciate your time! Thanks.

I recently read this article on button debouncing: A Guide to Debouncing - Part 2, or, How to Debounce a Contact in Two Easy Pages, by Jack Ganssle.

The article is on choosing the correct resistor and capacitor for your debounce circuit.

In the article, after calculating a (seemingly good) value of one of the resistor he goes on to say this :

But. the analysis ignores the gate's input leakage current. A CMOS device like the 74AHCT14 dribbles about a microamp from the inputs. That 180K resistor will bias the input up to .18 volts, uncomfortably close to the gate's best-case switching point of 0.5 volt. Change C to 1 µF and R2 is now 18K.

I am only beginning with electronics, so I can only guess what thats supposed to mean. And my best guess is that the leakage current is somehow effecting us in a bad way. It will be a big help if someone can give me an explanation on what this section. I prefer to know what I am doing, if I am doing it.