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Publication of BE426240ApublicationCriticalpatent/BE426240A/xx
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
H03G1/0041—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using thermistors
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01C—RESISTORS
H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
H03H7/24—Frequency- independent attenuators
H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
H03H7/251—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a thermistor