| 摘要 |
An oscillator (1) output is modulated by a control voltage (2), and transmitted in a galvanically separated transformer (3) before being sensed by a detector (4). A voltage is formed over a current generator (5) so that its control voltage or current is proportional to the voltage over it. Thus, the current generator functions as a resistance, and produces a voltage which is proportional to the transmitted effect. - On the basis of this voltage-dependent control, a current (7) is produced which is proportional to the control signals, forming a copy of signals over the load (9). The transformer used may be either inductive or capacitive, with the feed effect taken from a generator common to other appts. |
