julian403
Full Member level 5
what makes this oscilator oscilate
Hello All.
I've a question regarding this circuit (how its works)
What I could see by the simulator and implementing this circuit (measuring the voltages and currents) its:
At first both transistor get the saturation condition: Vbe = 0.7 V and Vce < 0.7V but Vce starts to decrease by time (for both transistor) until Vce reach a low value (I measured 0.150mV) after that one of the transistors get cutoff state (increasing the Vce). But Why this?
I means if both are in saturation. What makes that Vce increase after it got a low Vce?
I think that it has to be because Vcb (for this pnp transistor) is equal to 0.6 V (direct polarization) and there are both junction in direct polarization and it makes Ib goes to 0A. Following ebers moll model
Hello All.
I've a question regarding this circuit (how its works)
What I could see by the simulator and implementing this circuit (measuring the voltages and currents) its:
At first both transistor get the saturation condition: Vbe = 0.7 V and Vce < 0.7V but Vce starts to decrease by time (for both transistor) until Vce reach a low value (I measured 0.150mV) after that one of the transistors get cutoff state (increasing the Vce). But Why this?
I means if both are in saturation. What makes that Vce increase after it got a low Vce?
I think that it has to be because Vcb (for this pnp transistor) is equal to 0.6 V (direct polarization) and there are both junction in direct polarization and it makes Ib goes to 0A. Following ebers moll model