What is "reverse Hfe"? Hey everyone, I'm looking over a synthesizer schematic that has a 2SC2878 transistor in shunt with the main output - I think it's connected up in some kind of power on muting circuit for protecting speakers against turn-on thumps. Interestingly, this transistor has something called "Reverse Hfe" - I assume this means for an NPN transistor it will turn on if the base-emitter junction is negatively biased as well as positively? I've looked on the web and can't seem to find a good explanation of how such a transistor would be manufactured. The datasheet for the device is here: http://www.datasheetarchive.com/pdf-datasheets/Datasheets-38/DSA-757294.pdf [Broken] The circuit in question is: http://img9.imageshack.us/img9/9071/alphajuno.th.jpg [Broken] Any insight into how this circuit works would be appreciated - I guess it somehow keeps the 2SC2878 turned on until the positive and negative rails stabilize?