| 摘要 |
PURPOSE:To obtain a high stability with less number of components by constituting the titled circuit with three resistors, two signal current sources and one auxiliary current source in combination. CONSTITUTION:A series resistor where resistors 20, 21 are connected in series is connected in parallel with a resistor 22. Furthermore, the auxiliary power supply 23 and one end of the 1st signal current source 24 are connected to the end of the resistor 22. On the other hand, one end of the auxiliary power supply 23 and the power supply 24 is connected to one end of the resistor 22. Furthermore, one end of the 2nd signal current source 25 is connected to a connecting point of the resistors 20, 21. Through the constitution above, a binary signal current is converted into four-value around 0V. Moreover, in changing the ratio of the resistors 20, 21 without changing the condition that the sum of resistance values of the resistors 20, 21 is equal to the resistance value of the resistor 22, the ratio of the converting level is changed. |
