I have a*Belkin F8Z492-P Bluetooth receiver, that I want to use with my 'little buddy' amplifier by amplivox. *This Bluetooth receiver connects to an iPod or other device via Bluetooth, and plugs into the 'line in' on the amplifier and plays... *It works perfectly when I power the Bluetooth off of the included 5 volt wall wart. *But I want it to be portable, and the amplifier runs off 10 (D) batteries. *So I made voltage regulator with a 7805, added a 100uF cap on the Vin side, a 10uF & .1 uF cap on the 5 volt side to make a typical 5 volt supply. *I connect this to the amplifiers battery supply and power the Bluetooth adapter from it, but I get a buzitty buzz as the Bluetooth connects, and then a constant hum there after. *I added a 1000uF cap to the Vin of my new power supply with no affect.
* *I know there's a lack in circuit quality in this particular amp, but it's very suitable to my needs so I'd like to get it working if possible. *I've included a schematic of the amp which the company sent me. *I've talked to them about a similar issue -- the amp will pick up a buzzing noise when a cell phone goes off nearby. *They said something about the power supply was not designed with shielding for this...
* *I'm suspecting it's a related problem, but I can live with that one. *If anyone knows how to resolve this Bluetooth adapter issue I'd appreciate help.
Thanks
http://www.belkin.com/IWCatProductPage.process?Product_Id=508754
Here's a link to the schematic for the amplivox amp:
http://db.tt/vBYWz4Up
* *I know there's a lack in circuit quality in this particular amp, but it's very suitable to my needs so I'd like to get it working if possible. *I've included a schematic of the amp which the company sent me. *I've talked to them about a similar issue -- the amp will pick up a buzzing noise when a cell phone goes off nearby. *They said something about the power supply was not designed with shielding for this...
* *I'm suspecting it's a related problem, but I can live with that one. *If anyone knows how to resolve this Bluetooth adapter issue I'd appreciate help.
Thanks
http://www.belkin.com/IWCatProductPage.process?Product_Id=508754
Here's a link to the schematic for the amplivox amp:
http://db.tt/vBYWz4Up