Hybrid Microphone Preamplifier With Variable Selection Of Amplifier Technology
Abstract
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.
Keywords
Vacuum tube, phantom power, microphone, microprocessor, operational amplifier, preamplifier, triode, heatingPersistent identifier
http://hdl.handle.net/11012/138294Document type
Peer reviewedDocument version
Final PDFSource
Proceedings of the 24th Conference STUDENT EEICT 2018. s. 549-553. ISBN 978-80-214-5614-3http://www.feec.vutbr.cz/EEICT/
Collections
- Student EEICT 2018 [157]