| 摘要 |
PURPOSE:To attain a stable clamping action by connecting through a resistor the first opening and closing operation type clamping means that operates only during a clamp pulse duration and the second continuous operation type clamping means in parallel, and by taking out the output from the connecting point between the resistor and the second clamping means. CONSTITUTION:The first input terminal 1 is connected through a capacitor C1 with the connecting point between one end of a switch S1 and that of the resistor R1. The other end of the resistor R1 is connected to the base of a transistor Q2 for impedance conversion and to the emitter of a transistor Q3. The collector of the transistor Q2 is connected with a power supplying terminal 3, and its emitter is connected with an output terminal 4 and one end of a current source I2. The other end of the source I2 is grounded. The collector of the transistor Q3 is connected with the terminal 3, and its base is connected to a constant-voltage source V1. |
