Does anyone know of an IC dedicated for VOX circuit operation ?
Microphone or vibration sensor can be a piezoelectric 'buzzer', or microphone, or electret. Capable of a drop-off time near 1 minute.

 

Yes MC2830 chip

https://www.google.co.uk/url?sa=t&source=web&rct=j&url=http://www.komponenten.es.aau.dk/fileadmin/komponenten/Data_Sheet/Linear/MC2830.pdf&ved=0ahUKEwiUxbHXsMPJAhWKPRQKHVJ9AQcQFghDMAo&usg=AFQjCNExSokbQHhZ3_dQn5U5RTVpBBn17A

 

Slow listener?

 

Wow. You might still be able to get one. http://www.aliexpress.com/item/MC2830D-MC2830-Level-preamplification-circuit-automatic-level-control/1388011390.html

Ken

 

Thanks, Ken; THAT link shows "No longer available"
This shows hope ---> http://www.aliexpress.com/wholesale?SearchText=mc2830&opensearch=true

Why my search result is different than yours ? Can someone explain ? I run Linux, never Windows and never use Google.

ANY other chip doing the same 'VOX' that anyone knows of ?

 

Your right, didn’t know they were such a rare thing.

There seems to be plenty of roll your own, if you are so inclined. Circuits, that is.

 

Hello,

The mentioned MC2830 is available at box73 in germany, both in DIL and SMD:
http://www.box73.de/product_info.php?products_id=983
http://www.box73.de/product_info.php?products_id=982

Bertus

 

Ebay have them...

http://m.ebay.co.uk/itm/5pcs-MC2830P-MC2830-Genuine-Motorola-DIP-8-Chip-/181177065257?nav=SEARCH

 

Hello,

How "genuine" will they be when they come from Hong Kong?

Bertus