Engineering, Polytechnic and Vocational Training Equipment-> Digital Electronics Lab Trainers

[1]   Click to Enlarge DIGITAL LOGIC TRAINER. MODEL IBL-DLT?11 Digital Logic Trainer is intended to study of BASIC Logic Gates, verification and it?s implementation techniques by experimentation. Using this trainer the students experiment, to verify the Boolean expressions for a given logic circuit. This involves the study of Karnaugh?s reduction techniques, combination logic designs, and application circuits in pursuit of understanding digital electronics. This trainer is a self-contained instrument with all necessary facilities pooled in one instrument. It is desired to use Optional Digital multimeter and CRO as accessories for the measurement of voltages and observation of waveforms while performing experiment. The Front Panel of this instrument is well layed out with the representation of respective Boolean symbols for easy identification of Logic gates. The input and outputs of each logic circuit are terminated with silver-coated Phosphor Bronze springs for making multiple connections at any single spring terminal. The trainer is housed in an elegant and ergonomically designed cabinet with necessary power supplies, input / output facilities, signal sources. In all this is most suitable instrument for any DIGITAL ELECTRONICS LABORATORY. Specifications: Gates: 2 Input AND Gate ? 4Nos 2 Input OR Gate ? 4 Nos. NOT Gate ? 6 Nos. 2 Input NAND Gate ? 4 Nos. 2 Input EX-OR Gate ? 4 Nos. 2 Input NOR Gate ? 4 Nos JK-RS Flip Flop ? 4Nos Inputs: Logic Switch Inputs ? 6 Nos. De-Bounced Pulser input ? 1 No Free running TTL clock generator in Two ranges Outputs: TTL Compatible Lamp indicators ? 6 Nos. Independent 7 segment displays with decoders ? 2 Nos. Power supply Built-In power supply 5V DC @ 1A See Enlarge Click to Enlarge 16 CHANNEL TO 1 CHANNEL MULTIPLEXER. MODEL IBL-DE-1 A Multiplexer (data selector) is the electronic version of a one-way rotary switch. A single-pole, sixteen - position rotary switch on the left. The sixteen inputs (0-15) are shown on the left, and a single output on the right is labeled Y. A data selector is shown on the right. The data at input 2 (a logical 1) is being transferred through the contacts of the rotary switch. Similarly, the data at input 2 (a logical 1) is being transferred through the circuitry of the data selector on the right. The data position is selected by mechanically turning the rotor on the rotary switch. The data position is selected in the data selector by placing the proper binary number on the data-select inputs (D, C, B, and A). The data selector permits data to flow only from input to output, whereas the rotary switch allows data to flow in both directions. A data selector can be thought of as being similar to a one ?way rotary switch. See Enlarge Click to Enlarge 4- BIT BINARY ADDER / SUBTRACTOR. MODEL IBL-DE-2 The general public thinks of digital devices as fast and accurate calculating machines. The calculator and digital computer are probably the reason for that. Arithmetic circuits are common in many digital systems. It will be found that rather simple combinational logic circuits (several gates connected) will add, subtract, multiply, and divide. This chapter will cover binary arithmetic and the way it is performed by logic circuits. See Enlarge Click to Enlarge DECIMAL TO BINARY ENCODER. MODEL IBL-DE-3 One application of Logic Gates in digital systems is as code converters. Common codes used are binary, octal, hexadecimal, and of course decimal. The job of the encoder is to translate a decimal input to a binary (8421) number. See Enlarge Click to Enlarge 4 BIT BINARY UP-DOWN COUNTER. MODEL IBL-BE?1 This is a 4 bit presetable CMOS ring counter, CD4029. This counter has ?UP Count facility, by switch selection ?DOWN Count facility by switch selection ?Preset a count in the range of 0000 to 1001 in case of DECIMAL count or from 0000 to 1111 in case of BINARY count. This is achieved by setting the 4bit PRESET state switches to either at 0 or at 1 state. ?Can be used as either a Straight Binary counter or DECIMAL counter. Using the above counter any mode of operation can be set. A logic-1 output of this counter is used as gate trigger required for the SCR to go into active state. This in turn will act as a solid switch. A 230V AC operated Lamp load is used to display the state of the counter. In addition 4 bit LEDs will also display the status of this counter. See Enlarge Click to Enlarge SERIAL, PARALLEL INPUT COUNTER. MODEL IBL-PE-2 This is a demonstrator of a counter. Serial parallel input counter is counter with serial clock input, and parallel Data input facility. This counter can be set to any defined 4 bit state by enabling parallel data input. A clock pulse would advance the count from that defined state. This counter can be set to either UP or DOWN count. The count mode can be set to count either Decimal count or straing binary count mode. This trainer gives the rudiment of counter technique only. See Enlarge Click to Enlarge DEMORGANS LAW VERIFICATION TRAINER. MODEL IBL-DIG-1 It is desirable to connect the gates together in as few a number as possible to create a desired output result given a fixed set of input conditions. Alternatively it may be necessary to utilize one type of gate to produce several other logic functions. Purchasing one IC type in bulk quantity has the advantage of reducing the cost of these chips. Two theories are used here. 1) Boolean Algebra. 2) De-morgans Theorem. Specifications: NAND gate ?6Nos OR gate ?6 Nos NOR gate ? 3 Nos INVERTERS ?3Nos Binary Switch registers ? 6Nos LED Indicators ? 6 Nos Built-in Power supply. See Enlarge Click to Enlarge ARITHMETIC LOGIC UNIT DEMONSTRATOR. MODEL IBL-DM-10 These arithmetic logic units (ALU)/function generators perform 16 binary arithmetic operations on two 4-bit words. These operations are selected by the four function-select lines (S0, S1, S2, and S3) and include addition, subtraction, decrement and straight transfer. When performing arithmetic manipulations, applying a low-level voltage to the mode control input (M) must enable the internal carries. A full carry look-ahead scheme is available in these devices for fast, simultaneous carry generation by means of two cascade-outputs (P and G) for the four bits in the package. Using this demonstrator it is possible to perform and verify the following functions Two arithmetic operations: Addition and Subtraction of 4-bit binary words. Five logic operations: AND, NAND, OR, NOR, AND exclusive - OR. In order to accomplish the above tasks, required address selector switches, DATA selector switches, push switches, LED indicators for ADDRESS and DATA are provided in the equipment itself. This trainer comes with necessary power supplies. See Enlarge Click to Enlarge STUDY OF RAM DEMONSTRATOR. MODEL IBL-DM-11 This demonstrator is intended to show how a RAM works. RAM is a device that is used to store the data. The RAM used here is a static RAM. If the power is switched OFF, the data stored will be fully erased. This demonstrator will provide a means to understand, what is ment by Selecting to set an address, Selecting to set a DATA, Write DATA in the memory, Read DATA so stored in the memory etc. This trainer provides all the necessary input output devices like switches, LED indicators, momentary switches (debounced) etc. The block diagram shown on the front panel allows the student to view the DATA / Address and control logics. See Enlarge Click to Enlarge STUDY OF ROM DEMONSTRATOR. MODEL IBL-DM-12 This demonstrator allows the student to study the principles, how permanent memory works. This trainer has all the facilities to select Address, Data; Control signal needed to read the contents. The ROM demonstrator requires a preprogrammed ROM in order to visualise the stored DATA. Alternately, it has diode logic also where in the student enters an address and DATA. This allows him to understand what is selecting an address and read the contents in that location. See Enlarge Click to Enlarge 555 TIMER TRAINER . MODEL IBL-DM-13 The 555 Timer is a highly stable device for generating accurate time delays or oscillations. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free running frequency and the duty cycle are accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms. Features: Timing from microseconds to hours Adjustable duty cycle Operates in all multibibrator modes. Output and supply TTL compatible Temperature stability better than 0.005% per 0C. Normally ON and Normally OFF output. See Enlarge Click to Enlarge VARIABLE DIGITAL POWER SUPPLY. MODEL IBL-VPS-302-D This general purpose power supply can be used to power modern electronic circuits using digital and linear ICs, Op-Amps, NPN-PNP Transistors, FETs, UJTs, SCRs, Photo-Diods, Phototransistors, Opto-Isolators, Radio Receivers, Audio Amplifiers etc. which are normally encountered in electronics laboratories. This power supply is adjustable between 0 to + 30V, with a maximum load current of 2 Amps. This power supply is fitted with a voltmeter (0 to 30V) and a current meter (0 to 2 Amps). The power supply gives a constant current output with automatic crossover characteristics. For setting the cross point output voltage and current limits are to be accordingly set. For setting the voltage limits leave V- and V+ open adjust the voltage (Coarse) and (Fine) control unit the voltmeter reads the desired voltage. (This voltage becomes the voltage limit of the supply) for setting the current limit short the V- and V+ terminal on the front panel and adjust the current control unit the panel meter reads the desired current. (This current becomes the limit of the supply) remove the short circuit the power supply will operate within set voltage and current limits and will cross over from voltage mode to current mode when the load is increased and vice versa. The ground terminal can be used if any of the output terminals is to be grounded. Now the panel meter will continuously indicate the output voltage and load current. (This current becomes the limit of the supply) remove the short circuit the power supply will operate within set voltage and current limits and will cross over from voltage mode to current mode when the load is increased and Vice versa. See Enlarge [1] Go to Top