Educational program: Mechanic - electrician Title of program: Technical training II. class Generator of rectangular oscillations 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 generator of rectangular oscillations Components specification Recessing drawing Recessing drawing from the side of printed wiring Utilization of connection in practice Students activities
Components Value IO 4011 R1,R2 1K R3,R4 470 C1 68K-100K D1,D2 KA …… T1 BC 548
Testing of capacitors according to the acoustic signal Testing of semiconductor diodes Testing of transistors Testing of resistors
Describe a function of the acoustic tester Describe a sound when faulty diode is testing Describe a sound when capacitor 330nF, 220μF is testing
Draw a rectangular oscillations from the screen of oscilloscope to the prepared raster. Determine an amplitude of oscillations, period T. Calculate a frequency f Draw a graph of oscillation dependence, generated by a tester on amount of testing resistance1K, 10K.
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