This looks interesting, two versions, 'hot' and 'cool'.
http://www.audiodesignguide.com/my/Hot_Follower1.GIF
Full text:
http://www.audiodesignguide.com/my/index.html#MY_A
http://www.audiodesignguide.com/my/Hot_Follower1.GIF
Full text:
http://www.audiodesignguide.com/my/index.html#MY_A
I assume that you are wishing to use a non-global feedback power follower and some favourite main amp then? Or the exercise is pointless as the follower will be affected by the back EMF etc even worse (due to massive feedback) so the problem remains. In fact, instead of such a power follower, why don't you just make the main amp non-global feedback? This would be cheaper, easier, smaller, use less parts, less heat...
Hi,
try http://www.altmann.haan.de/splif_page/ just up your street.
Global feedback to get the best out of your classAB power amp and a follower stage to drive the speakers. Even a guide on multiple followers if you want to have separate outputs for individual speakers. A cheap way to bi-amp your speakers, but not suitable for active speakers
try http://www.altmann.haan.de/splif_page/ just up your street.
Global feedback to get the best out of your classAB power amp and a follower stage to drive the speakers. Even a guide on multiple followers if you want to have separate outputs for individual speakers. A cheap way to bi-amp your speakers, but not suitable for active speakers
Hi,
Try this NFB Power Diamond Buffer ,
and some pictures are in http://www.diyaudio.com/forums/showthread.php?s=&threadid=59952&perpage=10&highlight=&pagenumber=2.
It has been tested with tube-pre & speakers and worked quite good for several months.
Try this NFB Power Diamond Buffer ,
and some pictures are in http://www.diyaudio.com/forums/showthread.php?s=&threadid=59952&perpage=10&highlight=&pagenumber=2.
It has been tested with tube-pre & speakers and worked quite good for several months.
djk said:That's a bit complex to be simply called a 'diamond buffer', OTOH, the 'hot follower ' linked to above is a 'diamond buffer'.
Though I admit it is too complex for a normal DB, but if the supply
voltage is not too high say 18-0-18, it can be much easier to take
off the STAND-BY & Voltage Reference circuit and about 8 trannies.
Because the 2SK246BL can sustain only 50V.
Q8 through Q11 are for JFET source follower and bias provider,
no gain, but the DC output level can be adjusted by tunning the SVR1.
The circuit's thermal control is very easy.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Solid State
- Unity gain NFB speaker-buffer