Year-end Sale % OFF 
Abstract
A bipolar differential pair used as a current splitter is applied in the amplifier automatic gain control (AGC) circuit. The output voltage of the intermediate amplifier supplies current (via a resistor) to the point of emitter coupling of the differential pair. The current splitting is controlled by the base voltages of the pair. One collector output of this pair is used to provide additional voltage controlled feedback in the intermediate amplifier, another output provides the voltage controlled signal transfer to the output amplifier. The proposed method is applied to low-voltage power supply bandpass amplifier circuit. The gain control of 40 dB with − 47 dB total harmonic distortions (THD) in the total gain control range was achieved with a power supply of 3-75 V.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
