In other words, the circuit may be physical two - wire (or even physical one - wire) and logical four - wire, performing as a four - wire circuit but employing fewer than four wires.
换句话说，电路可以是物理双线(甚至是物理单线)、逻辑四线，它使用较少的线实现四线电路。
2
First, a short cut welded wire solar panels in the two electrodes as a pin (Figure 3) in order to facilitate connections and fixed on the circuit board.
生产过程首先，一条捷径焊接线太阳能电池板在两个电极作为一个销钉（图3）为了方便联系和固定在电路板。
3
The design of the constant current source in two-wire transmitter and the integrated transmitter circuit are analysed.