| 摘要 |
PURPOSE:To control a large output current with a small input current and to operate stably a logical system which includes an integrated circuit by dividing a part where a gate current is supplied into two, and widening the operation margin of a circuit. CONSTITUTION:The 1st Josephson element 101 and a resistance R1 are connected in series, the connection point is connected to an input terminal 108, and an input signal current IC is inputted. The 2nd Josephson element 102 and a resistance R2 are connected in series, the connection point is connected to a load resistance 106, and this circuit is connected in parallel to the circuit which inputs the current IC. The gate current Ig is supplied from a power source line 107 to the parallel circuit of this current injection type Josephson switch circuit through a resistance 105. Further, the 2nd gate current Ig' is supplied from a power source line 202 through a resistance 201, and when the elements 101 and 102 enter a voltage state, the current Ig+Ig' flows to a load resistance 106. Then, the large output current is controlled with the small input current to stabilize the operation of the switch circuit. |
