| 摘要 |
PURPOSE: To provide a switching-type oscillation circuit, allowing the power consumption of an oscillation circuit switched to a non-operation state to be almost zero, at switching of the operation state and the non-operation state of two oscillation circuits with a switching circuit. CONSTITUTION: A first oscillation circuit 1 having a first oscillation transistor 11, a second oscillation circuit 2 having a second oscillation transistor 21 and a switch circuit 3, which has a first switch terminal 7 connected to the first oscillation circuit 1 and a second switch terminal 8 connected to the second oscillation circuit 2 and switches the on/of states of the first oscillation circuit 1 alternately and the second oscillation circuit 2 with the supply of switch signal are included. The ground terminal of an emitter load 12 of the first oscillation transistor 11 and the ground terminals of base bias resistors 19 and 110 are connected to the first switch terminal 7. The ground terminal of the emitter load 22 of the second oscillation transistor 21 and the ground terminals of base bias resistors 29 and 210 are connected to a second switch terminal 8.
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