| 摘要 |
Signals (RVB) from a computer are fed to a pre-amplifier stage (PT,R1). Its output is fed to the base of a transistor (T2) acting as an amplifier with collector and emitter resistors (LR1,LR2) selected so that the collector voltage level of a series transistor (T1) is equal to the signal voltage. A diode (D) is connected between base and emitter of the series transistor so that normally it is non-conducting
|
