Antenna amplifier with output terminal protecting circuit

The utility model relates to an antenna amplifier with a protection circuit at the amplifier output terminal, the antenna amplifier comprises a signal input terminal, an amplifying circuit and a signal output terminal. The utility model is characterized in that the signal output terminal is provided...

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Bibliographic Details
Main Author QINGSONG XIANG
Format Patent
LanguageEnglish
Published 19.06.2002
Edition7
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:The utility model relates to an antenna amplifier with a protection circuit at the amplifier output terminal, the antenna amplifier comprises a signal input terminal, an amplifying circuit and a signal output terminal. The utility model is characterized in that the signal output terminal is provided with a protection circuit, the protection circuit adopts two switch diodes reversely connected in parallel, the protection circuit is connected at the output terminal of the amplifier in parallel, and the amplifier can adopt a crystal triode amplifier, and can also adopt an integrated circuit amplifier. Because the switch diode is adopted to be taken as the protection device of the output terminal, when an abnormal high voltage signal is generated by static electricity or a console switch, a switching tube is timely switched on, thereby avoiding the damage to the antenna amplifier due to penetrating amplifying elements, and ensuring everything in order.
Bibliography:Application Number: CN2001231770U