Prezentace na téma: "Educational program: Mechanic - electrician Title of program: Technical training II. class Bistable multivibrator Worked out: Bc. Chumchal Miroslav Projekt."— Transkript prezentace:
Educational program: Mechanic - electrician Title of program: Technical training II. class Bistable multivibrator Worked out: Bc. Chumchal Miroslav Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/ je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.
Scheme of bistable multivibrator Components specification Recessing drawing Recessing drawing from the side of joints Function of connection Students activities
The bistable multivibrator has got two stable states. With help of input impulse it switched over oneself between these states. After connected of voltage the T1, T2, started to open. The faster transistor opened oneself sooner (T1), the voltage decrease on his collector. This voltage across Rb2 on base T2, which closed oneself. It goes about first stable state. T1 opened, T2 closed. Change of state came by bringing of impulse on input 2. T2 opened oneself, the voltage decrease on collector T2, which across Rb1 bringing oneself on baseT1. It closed oneself and it goes about second stable state. T1 is closed and T2 is opened. We reached the change by bringing of impulse on T1 again. RS circuits – realization make oneself with help of two-stage gates NAND type. Input R – Reset. Bringing of log.1 on this input, cleared value on output Q. (set up output on value log. 0) Input S – Set. Bringing of log.1 on this input, it set up value Q on log. 1 If it on R and S log.1, at the same time, we marked this state as forbidden. This state is not defined and if this state came up, it is not able to determined the state of output.
Explain function of the bistable multivibrator. How different are multivibrator, astable and monostable flip-flop circuit? Where we can use this multivibrator in practice?
Build up the multivibrator on cuprextit desk. Measure voltage on electrodes of both transistors T1and T2.