Hey guys,
Here's the situation:
I have a 12v battery, a small boombox running on 12v, and mijn Loopstation RC-505, running on 9v.
I joined them all together, so that I can go out on the street with my loopstation, and make music.
So, I have the battery connected to and built into my boombox, I made the most simple reference 12-to-9v circuit(see attachment), and plugged that into my loopstation.
Then, I have a stereo 6mm to 3.5mm converter, and a 3.5mm stereo jack cable running from my loopstation back to the boombox.
It works. Sort of. My loop station gets enough power, the boombox powers on, I even have audio. But with that, there's an annoying noise in the audio. Sort of mixed "ssssshhhhhhh" and "wiiiiiiiiiiiii". It is gone when I unplug the jack cable from my loopstation. It's also not there when I plug some headphones into my loopstation. So it's only there, when there's a closed loop between my loopstation and my boombox, being power in, audio out. Interrupt one of those, and it's gone.
Do you have any suggestions on what the problem might be, and what I can do about it? After reading this thread I tried to put some 100 and later 1000uf caps on both the input and output, but it didn't help.
the data sheet provides me with another circuit diagram of a ripple reduction circuit. Is this what I'm looking for and do is need all of it?
Any help would be greatly appreciated.
Best regards,
Yur
Here's the situation:
I have a 12v battery, a small boombox running on 12v, and mijn Loopstation RC-505, running on 9v.
I joined them all together, so that I can go out on the street with my loopstation, and make music.
So, I have the battery connected to and built into my boombox, I made the most simple reference 12-to-9v circuit(see attachment), and plugged that into my loopstation.
Then, I have a stereo 6mm to 3.5mm converter, and a 3.5mm stereo jack cable running from my loopstation back to the boombox.
It works. Sort of. My loop station gets enough power, the boombox powers on, I even have audio. But with that, there's an annoying noise in the audio. Sort of mixed "ssssshhhhhhh" and "wiiiiiiiiiiiii". It is gone when I unplug the jack cable from my loopstation. It's also not there when I plug some headphones into my loopstation. So it's only there, when there's a closed loop between my loopstation and my boombox, being power in, audio out. Interrupt one of those, and it's gone.
Do you have any suggestions on what the problem might be, and what I can do about it? After reading this thread I tried to put some 100 and later 1000uf caps on both the input and output, but it didn't help.
the data sheet provides me with another circuit diagram of a ripple reduction circuit. Is this what I'm looking for and do is need all of it?
Any help would be greatly appreciated.
Best regards,
Yur