| 摘要 |
PURPOSE:To improve frequency response characteristics and load characteristics by constituting a two-stage voltage follower by the use of two electric power sources of an amplifier. CONSTITUTION:Assuming a potential difference of DELTAe to develop between input terminal P2 and output terminal P3 of main amplifier A1, the error voltage DELTAe is fed back to terminals P1-P2 (terminals P1-G2) by way of auxiliary amplifier A2 that holds input terminal P2 of main amplifier A1 at earth portential G2. As a result, the potential at terminal P2 is potential error DELTAe less than that at terminal P1, so that a voltage that coincides with that at input terminal P1 in terms of the magnitude and phase difference with high precision will appear at output terminal P3 eventually. |
