| 摘要 |
PURPOSE:To amplify the input signal to the signal of a given amplitude with high stability, by multiplying the amplitude values of the output signal and input signal and negative feedback the product after being amplified with a given gain. CONSTITUTION:The input signal A is input to the subtractor 1 and the amplitude detection circuit 2. The subtractor 1 outputs the signal subtracting the feedback signal KaB from the input signal A and it is input to the amplifier 3 to output the signal B. The signal B is input to the multiplier 4 together with the signal (a) applied from the amplitude detection circuit 2, resulting in being the multiplied signal aB and further being the signal KaB via the amplifier 5, to be fed back to the subtractor 1. |
