Electronics

Bridge Rectifier is made of four diodes connected in a bridge circuit. It is housed in a plastic moulded box. This bridge rectifier converts alternating current (AC) into direct current (DC). It provides the same output polarity for either input polarity. All electronic devices require direct current, so bridge rectifiers are used inside the power supplies of almost all electronic equipment. For an easy understanding of the internal circuitry, the circuit diagram is printed on the box.

The ADC unit converts an analog signal to a digital signal. When a variable voltage is applied to the input terminals it is converted into a digital output. Therefore, a 3-volt input will correspond to binary 11, and 7 volts will correspond to binary 111. A low-frequency AC input signal can be converted into a changing digital value. Use on its own or combined with the DAC to decode back into a stepped analog voltage.

Logic Gates Trainer is a self-training course in basic digital electronics and is the first step to understanding the fundamentals of any computer. It enables the student to understand AND, OR, NOT, NAND & NOR Gates and in the process to make connections. Supplied with user’s manual.

To verify the truth table of 3 input AND gate, OR gate, NAND gate, NOR gate, single input NOT gates, Boolean expressions, and Demorgan’s theorems. Consists of 5V d. c. regulated power supply, 4 push-to-ON switches provided for selecting logic ‘1’ and logic ‘0’, 2 Red LED output indicators, circuit diagram printed for 5 OR, 5 AND, and 4 NOT gates and their respective IC’s placed inside the cabinet and connections brought out at sockets.

An instrumentation amplifier is a switched gain precision operational 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. A digital multimeter may also be used to read the output. With the switched gain of 5 to 1000, it can handle signal inputs over a very wide range making it suitable for almost all applications.

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 watt. 12 assorted values of capacitors from 100 PF to 1000 μF, Integrated Circuit (IC) Base and IC 74LS00 1 No. each. LED, LDR, Photodiode, Solar Cell Logic Switches (4 No.) and LED Indicators (4 No.), etc., 2 mm Interconnection Leads -10 No. and Comprehensive User’s Manual.