tag:blogger.com,1999:blog-7590176649168185428.post6459811570611628907..comments2024-03-28T08:01:27.111-04:00Comments on SolderSmoke Daily News: Excellent Description of the Electret MicrophoneBill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-7590176649168185428.post-60696531037556535322017-07-16T16:16:52.688-04:002017-07-16T16:16:52.688-04:00You could have just opened one up, they are cheap ...You could have just opened one up, they are cheap and available. I did years go, was surprised that the FET, while in a small package, was still a recognizable device. I was expecting blob of epoxy.<br /><br />I think it was 1968, Popular Electronics had an article about how electrets worked, and even had a sidebar about making your own. Used the high voltage from a color tv set to provide the charge.<br /><br />Electrets are like electrostatic headphones, except no HV supply needed. While there have been construction articles about making electrostatic speakers and even headphones, I've never seen a construction article about making electret headphones or even speakers.<br /><br />MichaelMichaelhttps://www.blogger.com/profile/13699701261288661640noreply@blogger.com