Get a transistor power rating meter to measure the hfe of your trannies and by using really low hfe transistors you might get closer to that Ge sound. Ge cleans up from the guitar better than Si in general which can be difficult to replicate, but a tone control or some kind of treble snubber in the circuit can help a silicon pedal sound more Ge. Germanium does have some sounds which are difficult to get from silicon but it's not impossible to get close enough. And no need for the reverse polarity chip either. I still need to modify the circuit a bit to roll-off some of the treble but by using a 2N2222A with an hfe under 160 I have made some great sounding Red Rooster pedals. My most successful use of Si instead of Ge has been in the Red Rooster (Chickenhead) treble booster. In this transistor electric field that pushes charges around is strongest at the edges and weakens to zero toward the center. devices, such as heterojunction bipolar transistors (HBTs). Of course with older transistors noise can become an issue, but if you replacing germanium perhaps not such an issue! They conceived of a transistor with two gates one on top and the other on the bottom of a channel consisting of a thin film of germanium flanked by silicon. Silicongermanium (SiGe) heterojunction bipolar transistor (HBT) BICMOS technology is a. 1960s: The next big jump in transistor evolution came with the field-effect transistor. It pays for us to selectively incorporate germanium where silicon cannot meet the demands of future technologies, Saraswat says. I've used some very old 2N3903s and 2N2222As. Gordon Teal built the first silicon transistor, which worked just like a germanium junction transistor. Saraswat’s group has shown through simulations that nanometer scale germanium transistors are clearly better than silicon, and in only a few years time germanium will be a serious player as a semiconductor. I have had good results in some circuits by subbing low-gain Si trannies for Ge. In the late 1950s, interest grew in using silicon instead of germanium because of its. ![]() Well Ge transistors leak, and that can be a big part of why some fuzz circuits work with Ge but not so well with Si. Quick Summary: Germanium fuzz is less harsh, more expensive and gives a vintage sound. The invention of the transistor transformed the possibilities for.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |