Schmitt Trigger
Thursday, 18 July 2019
4:36 PM
if 
if 
!!! Virtual ground doesn't apply here
When 
We can get from 
When exceeds , becomes 
Hysteresis voltage is the voltage difference between the 'switching'
points of 
---
- Two zener diodes back to back
- Limits the output voltage
- Or
- to limit the current
---
When 
Middle at 
Edges at 
Hysteresis voltage is 
?
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