CONNECTION FOR AMPLIFIER'S OUTPUT STAGE'S TRANSISTOR OPERATING POINT ADJUSTMENT

The solution falls within the area of the circuit design of the power stage of the amplifiers of the electric signal, esp. of the amplifiers with voltage gain. The substantial decrease of the potential voltage swing on the output of the amplifier is eliminated. The basis of the solution concerns the...

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Bibliographic Details
Main Authors VESELY JAN ,CS, JAROS OTAKAR ,CS
Format Patent
LanguageEnglish
Published 14.11.1990
Edition5
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:The solution falls within the area of the circuit design of the power stage of the amplifiers of the electric signal, esp. of the amplifiers with voltage gain. The substantial decrease of the potential voltage swing on the output of the amplifier is eliminated. The basis of the solution concerns the fact that the feedback loop for the set-up and stabilization of the working point is controlled by the current of the feed line of the power stage. The temperature is stabilised without restriction of the amplitude of the output signal. The connection is formed by two additional transistors (3, 4), whose bases are excited by the excitation circuit (1). The working point is stabilized by means of two other transistors (6, 7) in the feedback, two resistors (5, 8), condensator (9), a diode (10) and a bias source (2).
Bibliography:Application Number: CS19870003104