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Description This transmitter is basic but allows transmission of audio to an AM radio. It consists of an RF oscillator operating in the AM broadcast band, together with a modulator stage, which mixes the incoming audio and the RF. A signal appears on the output, which has an AM component that can be picked up on a nearby AM radio receiver. Circuit Schematic Diagram The transmitter consists of oscillator stage Q1 and modulator/buffer stage Q2. Q1 is biased via R1, R2, and R3. L1, C3, and C4 form the tank circuit with feedback network C3-C4 providing feedback to the emitter of Q1. RF voltage at the junction of C3 and L1 drives buffer/modulator stage Q2. Q2 is biased by base current produced by RF rectification in the base emitter junction of Q2. C6 is an RF and AF bypass capacitor. C9, C10, and L2 form the tank circuit for the collector of Q2. RF is taken from the junction of C9 and C10 and fed to a short-wire antenna. Audio is f...

Entertainment in the form of music, news or even movies, generated from a series of audio devices found in a car. The series device known as a car audio system. What tool or device contained in car audio system? Car Head Unit - Head unit is the core of a car audio system, part of the car audio system that plays sound. The continued development of technology makes the head unit is no longer only serve as a radio receiver FM / AM CD player and a player, some have additional functions to be able to play MP3s. There is also a car head unit that has the ability to play DVDs complete with monitors and can be connected with IPOD. Power Amplifier - The function of the power amplifier is to amplify the signal coming out of the head unit. In the world of various types of car audio power amplifiers are divided into several classes, such as class A, B, AB, and D. Each class power amplifier has the advantage that its usefulness can be tailored to our needs in building a car audio system. In additio...

Learning Outcome 1: Identify functional basic electronic hand tools. ASSESSMENT CRITERIA 1. Basic electronic hand tools are identified according to their applications. 2. Basic electronic hand tools are specified according to job requirements. 3. Functions of electronic hand tools are identified and explained. REFERENCES: - Buban, Peter andSchmitt, Marshall. Technical Electricity and Electronics, New York: Mc Graw-Hill: 1972. - Grob, Bernard. Basic Electronics, 4th Edition; New York: Mc Graw-Hill Company: 1977 - Grob, Bernard. Electronics Circuits and Application; McGraw-Hill Company, USA: 1982 - Markus, John. Electronics Dictionary, 4th Edition; New York: McGraw-Hill Company: 1945 INFORMATION SHEET 1.1 Classification of Hand Tools Basic Electronic Hand Tools Driving of Tools Screwdriver. It is a device specifically designed to insert and tighten or to loosen and remove screws. A screwdriver comprises a head or tip which engages with a screw, a mechanism to apply torque by rotating the...

Hi Friends Here i want to share a new post related to PLC and Visual Basic VB6.0 Communication VB code is given below. Enjoy   “Real Time Automated Control using PLC-VB Communication” Abstract This paper is to enable the Delta PLC (Programmable Logic Control) DVP14SS to communicate with the Visual Basic 6.0 . The communication between DVP14SS and Visual Basic 6.0 is via Modbus Serial Protocol. Computers are used as a link between humans and PLC systems as they have more graphics and visual capabilities. These are nothing but SCADA systems widely used for determining plant set-ups and displaying plant status on high quality screens. They also record/log the system data for long period .The SCADA software’s are the software packages needs to be purchased from vendors and the cost depends on tag count. Visual Basic 6.0 platform can be used develop the SCADA application effectively. Using VB 6.0 we integrate software and hardware across spectrum of vendors easily. Here we show simp...