(not my site, the google just finally returned a good result)
https://halfshavedyaks.xyz/pcb/BM700-polarisation.php
I'm looking to put the FET based C12 topology that I built a couple of weeks ago into a larger mic body, with a charged backplate capsule and 3-way pattern switch.
Has anyone used the circuit at the link above? I've sim'd it and it looks to work perfectly fine, even with the parts swaps that I made - because it's what I have in the parts bin (1N4007, 2N2222). The sim comes in at +62, -55 (ish), so it's close enough to a 120V differential to get it done. It runs at about 130kHz.
I'm hoping to get some feedback on it before I do the layout work and get the boards made.
https://halfshavedyaks.xyz/pcb/BM700-polarisation.php
I'm looking to put the FET based C12 topology that I built a couple of weeks ago into a larger mic body, with a charged backplate capsule and 3-way pattern switch.
Has anyone used the circuit at the link above? I've sim'd it and it looks to work perfectly fine, even with the parts swaps that I made - because it's what I have in the parts bin (1N4007, 2N2222). The sim comes in at +62, -55 (ish), so it's close enough to a 120V differential to get it done. It runs at about 130kHz.
I'm hoping to get some feedback on it before I do the layout work and get the boards made.
