A 5W Frequency Modulation Transmitter Power Amplifier Circuit

Published:2011/7/20 3:16:00 Author:Joyce | Keyword: 5W , Frequency Modulation Transmitter, Power Amplifier | From:SeekIC

High frequency oscillation signal from output end IF of the varactor tuner of the television is used as the signal source. The tuner has a stable oscillation frequency, adding an 8 V voltage on input voltage BT would enable it to output stable frequency as long as the voltage is no less than 9 V. A coupling capacitance of several P should be added on the input end under operation. If the third stage amplifier gets too hot, two transistors should be connected with it in parallel .Adjusting the density of the inductance coil means adjusting the frequency-selecting loop.



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