In the Aug. 10 issue, we wrote about the centennial of condenser microphones. Let’s look more closely at electret condenser microphones. Fig. 1: The few components that make up an electret microphone.

Fig. 1: Diagrams from Wente’s 1916 patent application show the condenser microphone in cutaway view. Diaphragm (#6), which is grounded, is stretched only 5/10000th of an inch from the backplate (#7), ...

Each kit includes four detachable microphone evaluation circuits, equipped with plated through-hole input and output ...

James West is the co-inventor of the electret microphone used in telephones, sound recording devices, hearing aids, and other products. A research professor of electrical and computer engineering and ...

Any modern phone call placed, voice recording captured, karaoke song belted or conversation amplified via hearing aid would not be possible without James West. West, now a professor of electrical and ...

Using a speaker as a microphone is a trick old enough to have become common knowledge, but how often do you see the hack reversed? As part of a larger project to measure the acoustic power of a ...

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, ...

Dublin, Aug. 07, 2023 (GLOBE NEWSWIRE) -- The "Microphone Market by Technology (MEMS, Electret), MEMS Type (Analog, Digital), Communication Technology (Wired ...