mitsos
Well-known member
- Joined
- May 4, 2007
- Messages
- 2,886
People seem to speak wonders of these chips.. Since they are cheap (compared to output trafos) I wondered if this would this work ok or not?
I recently pulled a working balance board from my SSL9Ks and connected it to the output of the 312 (minus output trafo, of course) and all I got was a high-pitched squealing noise. I have the DRV134 in these boards (have some 1646 coming to test). But is there a reason why this wouldn't work? I'm hesitant to test it again since I don't know what the noise was... My PSU is +-18V, so I don't think I blew the chip (I haven't yet been able to swap it back to the SSL to test again).
balancing board info for those unfamiliar with it:
http://www.beatbazar.com/guests/ssltech/ob-1/index.htm
Has anyone done this already? Good/bad results? CMRR on these is not as high as on an output trafo (not sure how important this is on the output). I'm wondering if there is a reason to do this besides saving a bit of $ on output trafos? If I later wanted to incorporate a VU, for example, would I need a buffer circuit or something to drive it or is there an easier way?
thanks in advance!
I recently pulled a working balance board from my SSL9Ks and connected it to the output of the 312 (minus output trafo, of course) and all I got was a high-pitched squealing noise. I have the DRV134 in these boards (have some 1646 coming to test). But is there a reason why this wouldn't work? I'm hesitant to test it again since I don't know what the noise was... My PSU is +-18V, so I don't think I blew the chip (I haven't yet been able to swap it back to the SSL to test again).
balancing board info for those unfamiliar with it:
http://www.beatbazar.com/guests/ssltech/ob-1/index.htm
Has anyone done this already? Good/bad results? CMRR on these is not as high as on an output trafo (not sure how important this is on the output). I'm wondering if there is a reason to do this besides saving a bit of $ on output trafos? If I later wanted to incorporate a VU, for example, would I need a buffer circuit or something to drive it or is there an easier way?
thanks in advance!