Diferential audio preamplifier for(example) bluetooth modules, requires only positive power source, no negative rail requiredDesigned by Tomas Kovacik in Slovakia
Due to the covid19, there are limitations where can I ship packages by Slovak post (https://www.posta.sk/stranky/obmedzenia-a-upravy-v-medzinarodnej-poste)
from hobbyist for hobbyists
Audio preamplifier with differential input for bluetooth modules based on OVC3860 chip, in my case: blk-md-spk-b S3860M-S XS3868 BK8000L I made this (based on online documentation, and reverssing...Read More…
Audio preamplifier with differential input for bluetooth modules based on OVC3860 chip, in my case:
I made this (based on online documentation, and reverssing from pictures of discontinued product) just for easy development, becaose output ground of this modules can't be connected to power ground ( it has 0.9V offset, in case of OV3860 based modules)
also this could work with F-3188 BLE bluetooth 4.0 module based on CSR8645
It used 12V, I used NE5532 (no luck with LM358), but you can used whatever you want. Also I can populate it or give you parts.
|Shipping Rate||Ships From||First item||Additional items|
Slovak Post: 1st class Ground Rate
Slovak Post: 1st class Registered Mail
Slovak post price list: https://cennik.posta.sk/en Original site with information about restrictions due to covid-19: https://www.posta.sk/stranky/obmedzenia-a-upravy-v-medzinarodnej-poste google translate to english: https://translate.google.com/translate?sl=sk&tl=en&u=https%3A%2F%2Fwww.posta.sk%2Fstranky%2Fobmedzenia-a-upravy-v-medzinarodnej-poste
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