Microphone Related
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Site: Epanorama - Powering Microphones
Link: http://www.epanorama.net/circuits/microphone_powering.html (opens in new page)
Description:
This document is a collection of information and circuits for powering electret microphone capsules. This document is written for people who understand the basics of microhone circuits.
Many types of microphones require power to operate, as a general rule these types are described as condenser microphones. The power is used for internal pre-amplifiers and polarizing microphone capsules. If internal batteries are to be avoided then the only solution is to supply the power via the microphone signal cable.In some cases microphones might be claimed to be "dead" not realising that they require a battery or in other cases phantom power.
