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Course Name: RADIO, TV
Objective: To impart the trainees the necessary skills in order to capture the growing rural markets for electrical and electronic products and help the rural masses with necessary support services in this area, at a sustainable returns to the learners.
Duration: 3 Months
Mr. G Venkatesh
Materials, Conductors, Resistors, Insulators with examples, Voltage, Current, Frequency, AC Voltage DC Voltage differences, To study DC and AC supplies on CRO and study amplitude and frequency relation between voltage, current and resistance in DC Circuits, Impedance measurement in AC, R.L.C circuit. Power and energy drawn by Series and Parallel circuits. Series and Parallel connections. Ohms Law. Study and use of Voltmeter, Ammeter, Wattmeter, Multimeter, IC tester’s Analog and Digital type. Usage of tools and Instruments for Assembling and Servicing.
Soldering:- Different types of Soldering Irons, wattages, Temperature Controlled Soldering Iron, De-Solder’s , PCB’S and Soldering practice on PCB’s, Soldering practice, about Machine Soldering.
Inductors, fixed, variable, Transformer’s step-down, step-up Auto transformers, usage and checking, Resistor types, fixed, variable, tapped, Thermistor, VDR, IDR, Rheostats. Knowing value of Resistors by Colour Code method and checking on Multimeter, Capacitor types, fixed, variable, polyester, mica, ceramic, Electrolytic, its uses and condition checking on Multimeter.
Semiconductors: - Diode types, Zener, Tunnel, Photo diode, varicap, Temperature dependent, Light emitting, thyristor. Transistors, NPN, P NP, FET’s, MOSFET. IC’s types and uses, SMD components and micro Processors and Processors and their functions.
Rectifiers, making of eliminators, about Modulation, AM, FM, and PM, Demodulation. Amplification and types of amplifiers, different amplifiers and their study, making of multivibrator circuit, about Public Address System and arrangement.
Radio Transmitter, Receiver
Explanation of Block Diagram, working different components in Radio Receiver and how to check, Assembling and testing of Single Band and Two band Radio’s FM band fixing, Fault finding and Trouble Shooting of Radio’s. Tape recorder working principle, types of mechanisms, difference between Mono and stereo, Two-in-one’s, hi-watt cassette players, walkmans, ear phones and head phones, Assembling of a Deck, Fault finding and trouble shooting.
Regulated, SMPS, SCR, Stabilizer’s Auto cut and Automatic. B/W Television transmitter and receiver, explanation with Block Diagram, Components in TV CRT, Yoke, LOT, SAW, Filter, BALUN and checking. Different sections in TV and how to find these sections in TV of any make. Difference between 20” & 14” TV’s. Assembling of B/W TV and testing, use of pattern generator, Manual tuner and Electronic Tuner. Remote control for B/W TV’s and how to connect Remote kit for Non Remote TV’s. Faultfinding and Trouble Shooting in all sections and Charging of weak CRT, making of CRT Charger. Precautions while Servicing.
Module – VI
Color Television Transmitter and Receiver
Explanation with block diagram, difference between B/W TV and Color TV, difference between 14”, 20” and 29” TVs study of different component in TV, CRT, Degaussing Coil, Color Purity and Convergence magnets, Crystal, PTC, LOT, Non magnetized speaker, Remote Processor and knowing of different sections, how to find these sections in TV of any make. Assembling of color TV and testing and using of Pattern Generator. Fault finding and Trouble Shooting in TV and Charging of weak CRT charger. Precautions while servicing. Connection of Remote kit for non Remote TV’s.
Module – VII
VCP and VCR’s working principle
Difference between VCP and VCR, knowing of different sections, hot to connect to B/W TV and color TV and what are the problems when connecting, remedy’s, Common Faults and Trouble Shooting.
CD players, Audio and video, working principle of CD players & DVD player, connecting to the TV’s B/W and Color, use of R.F converter, common faults due to CD players, DVD players and remedy.
Module – VIII
Cable TV networking
How it works, common faults due to cable network and how to solve, information of different Transmission Frequency’s, S Band, How to Tune different channels in TV’s Maintenance of Electronic Appliances.