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Priority to JP4618684ApriorityCriticalpatent/JPS59171207A/ja
Publication of JPS59171207ApublicationCriticalpatent/JPS59171207A/ja
Publication of JPH0354888B2publicationCriticalpatent/JPH0354888B2/ja
H03G1/00—Details of arrangements for controlling amplification
H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices