Logarithmic electronic gain control circuit

The invention relates to an electronic gain control arrangement with a logarithmic control characteristic. Use is made of the property of current amplifier circuits having bipolar transistors that the current distribution varies as an exponential function of the control voltage. The circuit arrangem...

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Bibliographische Detailangaben
Hauptverfasser:	ZOGG, URS
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING RESONATORS
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Beschreibung
Zusammenfassung:	The invention relates to an electronic gain control arrangement with a logarithmic control characteristic. Use is made of the property of current amplifier circuits having bipolar transistors that the current distribution varies as an exponential function of the control voltage. The circuit arrangement is symmetrical, so that even harmonics are compensated for.