KT315

Hello, Dmitry! Once, Fri Dec 14 2001 10:33, Dmitriy Nesmachny wrote to All: DN> Upit─────┐ DN> ██ DN> ██R2 DN> to ██ DN> R1 ┌─┴────────Uout DN> Uin──█████──┤b DN> └>┐ DN> е│ DN> └────┐ DN> │ DN> ─┴─ DN> ...well, that is, a standard RTL inverter. If you take the KT315 transistor DN> then what approximately resistor values should be used in order to DN> make it work in key mode when powered by about 8 DN> volts? initially - you need to know R2, Upit, Uin, h21e of the transistor (KT315A - for less than 20, like, another letter - at least 40). you'll recognize R1 ;) =(Uwh-0.7))/((Upit/R2)/h21). round down. the load resistance has a big influence (what is at the output connects), if it is comparable to R2, you need to substitute R2 [(load resistance) parallel to R2]. Best wishes.Dmitry. [ZX] [Quake] np: Zemfira Hochesh