Hybrid Microphone Preamplifier With Variable Selection Of Amplifier Technology
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This paper deals with the design of a studio level hybrid microphone pre-amplifier using a vacuum tube and semiconductor technology. The pre-amplifier circuit also contains an analog VU meter, 48 V phantom power supply, variable high pass filter, phase inverter switch and adjustable stage input impedance. This paper also deals with the design of a multi-voltage power supply unit and microprocessor controller unit ensuring completely automatic amplifier functions. The end of the paper is dedicated to a characteristics measurement determining its parameters.
KeywordsVacuum tube, phantom power, microphone, microprocessor, operational amplifier, preamplifier, triode, heating
Document typePeer reviewed
Document versionFinal PDF
SourceProceedings of the 24th Conference STUDENT EEICT 2018. s. 549-553. ISBN 978-80-214-5614-3
- Student EEICT 2018