They tried germanium early all that equipment ended up on the boneyard shelf. Geophysics used vacuum tubes and x00:1 transformers to drive solenoids for a decade after germanium was available, before 2n3055 got affordable. If you had to buy these it would cost more than the amp probably. Less than the rating on the datasheet, it is probably good. Less than the Iceo rating on the datasheet, then try a 10 k resistor. Most germanium transistor production ceased in the 1970s in favor of silicon which are more stable, consistent, have higher gain, and lower leakage. This is the base open test.Īpply voltage (not very long) see what the current is. What is a germanium transistor The common transistor types used in guitar pedals are silicon and germanium. No jewelry on hand or neck.Ĭonnect appropriate polarity to the collector ,from the emitter run through the current function of a DVM before going back to supply. Voltage over 1v can burn your fingers to charcoal through metal. No distractions, kids, wives, cellphones, TV, focus on the job at hand. Use a alligator cliplead on the meter negative. One hand at a time when fooling with voltage on, other in pocket until you have some experience. Warning, to newbies, voltage over 24 across your heart can stop it. If you look at the lead side with the long dimension towards you, base is usually on the left, emitter is usually on the right. Consultez la traduction anglais-arabe de germanium transistor dans le dictionnaire PONS qui inclut un entraneur de vocabulaire, les tableaux de conjugaison. If they are TO3 like in the picture, then collector is case. Try first, theirs are more complete than alldata I you can get a datsheet, you can do a Iceo test.

Germanium transistor