A common anode seven segment module is fitted on a board with 8 bit dip switch to control the each segment of seven segment LED display. The inputs A-D of a display driver are connected to the binary coded decimal (BCD) outputs from a decade counter. A network of logic gates inside the display driver makes its outputs a-g become high or low as appropriate to light the required segments a-g of a seven segment display. A resistor is required in series with each segment to protect the LEDs
Trainer consisting of Power Supply of +5 V / ±12 V (each of 250 mA), Silicon, Germanium diodes, Zeners, PNP and NPN Transistors, FET, One speaker, 12 different values of carbon film resistances of ¼ W, ½ W and 1 W. 12 assorted values of capacitors from 100 pF to 1000 ?F, Integrated Circuit (IC) Base and IC 74LS00 1 No. each. LED, LDR, Photo diode, Solar Cell Logic Switches (4 No.) and LED Indicators (4 No.) etc., 2 mm Interconnection Leads -10 No. and Comprehensive User’s Manual
To demonstrate the function of operational amplifier using TL081 and L272 with discrete components different value of resistors, capacitor. Input can be applied from microphone, LDR. Offset null control is also provided. Output can be fed through the power amplifier into a loudspeaker.
Instrumentation amplifier is a switched gain precision operation amplifier. This is used for precise and accurate, low noise differential signal acquisition. 4mm sockets are used for the input signal. It can be interfaced with a wide range of sensors. It can take small voltage changes from a sensor and make those changes large enough to be measured using CRO. It is not able to drive a low impedance load such as a loudspeaker or relay. The output can be read on CRO. Digital multimeter may also be used to read the output. With switched gain of 5 to 1000, it can handle signal inputs over a very wide range making it suitable for almost all applications.
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