K
[email protected]
- Jan 1, 1970
- 0
Hi
I have this capacitive sensor I have made that works by applying a 5V
square wave onto a sensor plate. I then measure the current going to
that plate to estimate the capacitance from a human finger touch.
The funny thing is that when I touch it the first reading is higher
than the subsequent ones.
Is there a enhanced human body model beyond the simple one consisting
of a resistor and a capacitance to earth that can explain what I am
seeing?
Thanks
Klaus
I have this capacitive sensor I have made that works by applying a 5V
square wave onto a sensor plate. I then measure the current going to
that plate to estimate the capacitance from a human finger touch.
The funny thing is that when I touch it the first reading is higher
than the subsequent ones.
Is there a enhanced human body model beyond the simple one consisting
of a resistor and a capacitance to earth that can explain what I am
seeing?
Thanks
Klaus