开云体育

What an interesting thread. While going down a reddit-rabbit-hole on the Soma Ether, I fell across a link to the Spooky Tesla Spirit Radio project (

Great info on this thread. I have some documentation of electromagnetic listening here: https://www.zachpoff.com/resources/inductive-pickup-experiments/ including a link to my favorite solution:

I missed the beginning of this thread, so this might be unhelpful, but what about using a guitar pickup? (single coil obv) there are loads of cheap pickups out there that may be so-so for guitar use

Ferrite or ferromagnetic cores concentrate magnetic field. It's what make them more sensitive compared to a coreless inductor of same size and turn number. Since lines are concentrated directionality

@dimento454 you simply solder the two inductor terminals to a desired length microphone cable and put a plug at the other end, which connects to your preamp/recorder/mixer (minijack/jack/XLR). It's

Hello, I've tried different inductors and I had the best results with these tiny 22mH inductors. @David can you give some more information about your air conductor? Dimensions, number of windings

Thanks David. I'll take a look. My hesitation is mostly about my assembly ability. I have put together a few of those mini electronics practice kits, so maybe I should take it up a notch. Appreciate

Thanks @Jonas. I have looked at the schematics before but ruled them beyond my ability to make, I'll have to have another look. I have a set each of your USI and Micro USI and they're great. Thanks

PS search for images with "frame antenna" for design inspirations :-)

Plus one for Elektrosluch! It's a simple clean headphone preamp and can be built from the available schematics. The cheapest option, if you have a mic preamp (in your recorder or mixer) is to simply

Hi there, Jonas from LOM here. All Elektrosluch designs are open-source and you can look them up on our github (LOM-instruments). Or we do sell Elektrou?i which are passive sensors that work with

Morning all and greetings from Cork. I'm just wondering if any of you have tried the Soma Ether V2, what it's like? Also- are there alternatives that can do something similar for less money- I can do

MAT02 and ZTX1048 are in the standard LTspice library; they're npn's.

Just as a bit of fyi... If you are after the lowest possible noise BJT, PNP will get you a lower theoretical minimum noise than NPN. As a differential matched pair, the SSM2220 used to be the

Can anyone direct me to models of low noise discrete (not surface mount!) transistors (e.g. BC109 type) for use in LTSpice, please? Many thanks, David

Great, thanks for the affirmation Jules. I just ordered some piezo discs (including the ultrasonic 35W) and a little batch of 2SK170-GR I found from a local (DE) seller by chance. Regards, Domingo

Those discs work great, if you can find them. The key is shielding and the piezo buffer. You Pip with higher voltage and resistor should work. The current through the FETvwill be similar thus the

Thank you Zach! So good that you documented and share your knowledge and experience. I'd like to try the FET buffer, I never built one but it seems simple as the guts of my electrets :). My 'PiP' is

Hi. I started a table of info about contact mics and preamps on my website. I use them to record tiny things (rather than mic louder instruments) so maybe the research will be useful for you too?

Thanks for the replies. What contact microphones are mostly being used by the community and which specs should I consider? I see many in offer for musical instruments, like the Korg CM-400, or many