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Seven Segment LED Display Circuit
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
Digital / Analog Training System
Solderless Breadboard has 1680 tie points. Provided with 2 Terminal strips and 4 Distribution strips. Built in DC Regulated Power Supply. DC Supply ± 5V/ 1 Amp. 0 to ± 15V DC (Variable), 1 Amp. Built-in Function Generator. . Waveform : Sine, Square and Triangle (with selector switch),
Frequency : 1 – 100 Hz Variable
Amplitude : Variable up to 10 V, TTL 5V p-p
Data Switches (Bounceless) – 8 No.
LED Display (buffered) – 10 No.
Clock Pulsar – 2 No.
Seven Segment Display with Decoder IC 7447 – 2 No.
Speaker 2.5 Dia. with sockets – 1 No.
BNC Plug with 2 mm Sockets – 2 No.
4 mm socket connected with 2 mm sockets – 2 No.
Interconnection leads having 2 mm plugs at one end – 10 No.
Interconnection leads having 4 mm plugs at both end – 10 No.
22 SWG Hook Up Wire of 20 cm length – 100 No.
Comprehensive User’s Manual – 1 No.
Input 220 V, 50 Hz. AC with On/Off indicator.
Digital Trainer Using NAND Gates
Complete with Regulated power supply of + 5V/500 mA. Provided with 4 Logic input switches (bounceless) 4 LED Indicators (Buffered)
Functional diagram of :-
1. 3 Input NAND 6 No.
2. 4 Input NAND 4 No.
3. 1 Input NOT Gates 4 No. is printed on board.
4. 12 Interconnection Leads and User’s Manual is provided.
Discrete Component Trainer
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
Linear IC Trainer
This Trainer Consist of :
1. Regulated power supply of ± 12 V / 250 mA.
2. Variable 0 to ±5 V / 250 mA.
3. Sine wave oscillation of 1 KHz.
4. Digital Voltmeter of 0-20 V DC, LCD display, 3 ½ Digit.
5. Functional diagram of IC 741 is printed with 2 mm sockets.
6. One extra 8 pin IC Base with 2 mm sockets.
7. Potentiometer of 10K Ohms.
8. Required Resistance and Capacitances mounted on board.
9. Interconnection Leads and Manual to perform 15 experiments on IC741 e.g. inverting, non-inverting, summing, difference, multiplier, differentiator, integrator etc.
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