Two Input and Gate

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

Instrument is design to demonstrate the method to transmit signals via. Electromagnetic transmission. It is still used in radio system to transmit audio signal although it has lesser in popularity compared to FM (Frequency Modulation) due to its lower signal to noise ratio. Technical Specification :- 1. I C based DC regulated Power Supply ±12 V / 500 mA. 2. Audio frequency 1 KHz / 0-2 Vpp for modulating signal 455 KHz / 2.5 Vpp approx. for Carrier Frequency.

Each module is housed in a plastic box 90 x 90 x 30 mm and is provided with a circuit diagram on the panel. It has necessary input and output sockets. The socket stacking system allows addition of as many modules as desired, designed to work on 6V D. C.

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.