2. Educational program: Mechanic - electrician Title of program: Technical training II. class Monostable multivibrator Worked out: Bc. Chumchal Miroslav Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

3.  Scheme of monostable multivibrator  Components specification  Recessing drawing  Recessing drawing from the side of joints  Function of connection  Students activities

5. Components Value R1 1K R2 M1 R3 M1 R4 1K C1 6n8 T1, T2 KF507

8.  The monostable multivibrator has got one stable position. Switch over to unstable position is able from this position. After a time it switch over back by oneself to the stable position.  The transistor T2 opened after connection of supplying voltage. Current started passing across his base. Voltage on collector of transistor T2 decrease on a minimum value and transistor T1 became closed.  To change of this state, open transistor T1 by impulse, it leads to reduce of voltage on T2 base and it closed him. After discharge of capacitor C1, transistors back to the original position.  We get an impulse on outlet, which is given by time constant τ = R b. C  This multivibrator is used like a delaying element.

9. Explain the function of monostable multivibrator. What is the difference between unstable and monostable multivibrator? Where in practice is used this flip- flop circuit?

10. Build up a monostable multivibrator on a desk of printed wiring– cuprextite. Measure a static voltage on all electrodes of transistors T1, T2. Measure a course of voltage on outlet by oscilloscope and plot this course to the graph.

11.  Vlastní poznámkový sešit  www.wikipedie.org./wiki/klopný obvod www.wikipedie.org./wiki/klopný