30 W BTL audio power amplifier AN7164
Circuit diagram:
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| 30 W BTL audio power amplifier AN7164 |
Easy 3PDT Switch Wiring
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Block diagram of FM transmitter and receiver and its explanation
Block diagram of FM transmitter and receiver and its explanation FM transmitter Frequency Modulation is the process in which the frequency of the carrier signal is varied by the modulating signal while the amplitude remains constant Using Reactance modulator direct method The FM transmitter has three basic sections. The exciter section contains the carrier oscillator, reactance modulator and the buffer amplifier. The frequency multiplier section, which features several frequency multipliers. The power output section, which includes a low- level power amplifier, the final power amplifier, and the impedance matching network to properly load the power section with the antenna impedance. The essential function of each circuit in the FM transmitter may be described as follows. The Exciter The function of the carrier oscillator is to generate a stable sine wave signal at the rest frequency, when no modulation is applied. It must be able to linearly change frequency when fully modulated, w
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