Prezentace na téma: "Educational program: Mechanic - electrician Title of program: Technical training II. class RC oscillator Worked out: Bc. Chumchal Miroslav Projekt Anglicky."— Transkript prezentace:
Educational program: Mechanic - electrician Title of program: Technical training II. class RC oscillator 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 the RC oscillator Components specification Recessing drawing from the side of elements Recessing drawing from the side of joints Description of connection Students activities
Signal from the collector T1 is bringing across the four- pole composed from capacitors and resistors on base of the transistor. The four- pole moved round slight of signal phase about The value of the four- pole components determining a frequency on which the oscillator oscillating. The operating point of transistor is positioning by resistor R4. The signal is withdrawing from the collector T1 across a coupling capacitor Cv. The oscillator is supplying by ss. voltage 4,5V and taking from source a current about 1,5 mA.
Explain function of nf. oscillator. For what is a resistor R4 in a scheme. Explain a procedure of measuring by Lissajous figures.
Draw a block scheme for measuring of progress of nf. signal. Use a Lassajous figures for finding a oscillator frequency. Take down a voltage dependence on frequency to the graph.