tag:blogger.com,1999:blog-6100511197805579796.post205705736796920480..comments2024-02-14T18:43:36.096+01:00Comments on Davide Gironi blog: A NPN transistor Electret Condenser Microphone Preamp for microcontrollersDavide Gironihttp://www.blogger.com/profile/16366076989473118278noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6100511197805579796.post-63810804753635453752020-10-12T13:58:27.388+02:002020-10-12T13:58:27.388+02:00Thank you for sharing your result here! It helps!Thank you for sharing your result here! It helps!Davide Gironihttps://www.blogger.com/profile/16366076989473118278noreply@blogger.comtag:blogger.com,1999:blog-6100511197805579796.post-88340275490776953492020-10-11T20:05:03.403+02:002020-10-11T20:05:03.403+02:00I tried using this circuit with a number of differ...I tried using this circuit with a number of different electret cartridges. With most I got only a weak signal and (more to the point) distorted sound. But changing the mic pullup resistor to 2.2K or 1K gave immensely better resultsThe signal was both stronger and cleaner. 4K also worked with some mics, although not as well and 5K and above were pretty bad.Anonymoushttps://www.blogger.com/profile/14556022105430050253noreply@blogger.com