o find the triggering points:
Applying KVL at the output side, we get
Vo=IR1+IR2+V
∴I=(Vo-V)/((R1+R2 ) )
From circuit diagram, the threshold (triggering) point can be calculated as
VT=IR2+V
Substituting the equation of 'I' in above equation, we get
VT=[(Vo-V)/(R1+R2 )] R2+V
VT=R2/(R1+R2 ) Vo-R2/(R1+R2 ) V+V
VT=R2/(R1+R2 ) Vo+V[1-R2/(R1+R2 )]
VT=R2/(R1+R2 ) Vo+R1/(R1+R2 ) V
When Vout=+Vsat , VT=+ve
When Vout=-Vsat , VT= -ve
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