High-frequency signal filter circuit and household appliance

The utility model brings forward a high frequency signal filter circuit and a household electrical appliance, the filter circuit comprises a low frequency BJT filter module, a high frequency RC filter module and an intermediate frequency BJT filter module, the low frequency BJT filter module realize...

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Bibliographische Detailangaben
Hauptverfasser:	LI YAOCONG, PAN YEJIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The utility model brings forward a high frequency signal filter circuit and a household electrical appliance, the filter circuit comprises a low frequency BJT filter module, a high frequency RC filter module and an intermediate frequency BJT filter module, the low frequency BJT filter module realizes low frequency band interference noise filtering, the high frequency RC filter module realizes high frequency band interference noise filtering, and the intermediate frequency BJT filter module realizes intermediate frequency band interference noise filtering. The intermediate-frequency BJT filtering module is used for filtering intermediate-frequency-band interference noise; by means of three-level filtering negative feedback control, amplitude deviation caused by interference noise in the high-frequency signal transmission process is avoided, low-cost and high-precision filtering is achieved through the double-triode amplifying and filtering circuit, the development efficiency of developers is improved, the deve