BAND PASS FILTER

BAND PASS FILTER

PROBLEM TO BE SOLVED: To allow switching between a broad band filter characteristic and a narrow band filter characteristic without using a mechanical contact switch. SOLUTION: A signal changeover circuit of a differential amplifier type gives an input signal to a broadband filter or a narrow band f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: NISHI MASANOBU
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
PULSE TECHNIQUE
RESONATORS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To allow switching between a broad band filter characteristic and a narrow band filter characteristic without using a mechanical contact switch. SOLUTION: A signal changeover circuit of a differential amplifier type gives an input signal to a broadband filter or a narrow band filter selectively so as to provide the input signal to receive the broad band filter characteristic or the narrow band filter characteristic.