Here is an Electret Condenser Microphone – ECM preamplifier circuit based on ultra low noise BC650C transistors. Due to difficulty of finding BC650C, instead of them, as you can see in the schematic, ...

Electret capsules can be found in some of the highest quality microphones for studio use, as well as in some of the very cheapest microphone capsules on the market. More care and attention has gone ...

The new ICs will replace the low-level analog outputs common to conventional ECMs with more robust digital signals that have greater immunity to noise and RF interference. Other expected benefits ...

A friend of mine is producing a series of HOWTO videos for an open source project, and discovered that he needed a better ...

The circuit was designed to provide more efficient output with a dynamic microphone by using a low noise preamplifier. Dynamic Microphone – one variety of microphone that has the following features of ...