tangent
Headphone CouncilJoined: Aug. 27, 2001
Locale: Aztec, NM
Total Posts: 1821 |  posted 03-17-2009 11:33 PM CST (US)   |  | 
Very economical! Call it CMoy++.  I especially like the idea of reusing the LED you wanted anyway as a power indicator for biasing. You've gone one better than I did in PIMETA v2, as yours is used for 3 purposes, instead of just 2. Would you consider doing a variant with a bipolar CCS instead of the JFET? Then your amp can be built from Radio Shack parts, except that you have to use the op-amp in the normal fashion, rather than driving the buffer from the op-amp's comp pin. Even the lowly TL072 -- the only sane choice, of the few op-amps Radio Shack offers -- should sound decent given a transistor buffer. |
