Left: photo of the electret microphone and the preamplifier which had... | Download Scientific Diagram
![microphone - Do smartphones and tablets generally use dynamic or condenser electret mics? - Electrical Engineering Stack Exchange microphone - Do smartphones and tablets generally use dynamic or condenser electret mics? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/XMoyx.png)
microphone - Do smartphones and tablets generally use dynamic or condenser electret mics? - Electrical Engineering Stack Exchange
![operational amplifier - Electret microphone weird offset problem - Electrical Engineering Stack Exchange operational amplifier - Electret microphone weird offset problem - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/esPYU.png)
operational amplifier - Electret microphone weird offset problem - Electrical Engineering Stack Exchange
![A potentially novel pre-amp for electret mic capsules which have their internal FETs Drain and Source connections available separately under Repository-circuits -43875- : Next.gr A potentially novel pre-amp for electret mic capsules which have their internal FETs Drain and Source connections available separately under Repository-circuits -43875- : Next.gr](http://www.next.gr/uploads/61/Electret-pre-amp-schematic-R-Whittle-2009-09-25.png)