jin2022
Newbie
hi friends,
this is an oscillator. at the beginning, Q1 is off, so does Q2.C1 is encharged through VCC—R1—speaker.and voltage of Q1 base increases. as Q1 base reach around 0.5v, Q1 starts on. so does Q2.and collector of Q2 feedbacks to Q1 base.it's positive feedback.Q1,Q2start saturation
and issue comes:will saturation hold on? if not, why? it is said C1will discharge, how it is done?
thx
this is an oscillator. at the beginning, Q1 is off, so does Q2.C1 is encharged through VCC—R1—speaker.and voltage of Q1 base increases. as Q1 base reach around 0.5v, Q1 starts on. so does Q2.and collector of Q2 feedbacks to Q1 base.it's positive feedback.Q1,Q2start saturation
and issue comes:will saturation hold on? if not, why? it is said C1will discharge, how it is done?
thx
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