| 摘要 |
<p>PURPOSE:To obtain a stable error compensation type transformer by feeding back the output of a first amplifier connected to the secondary side of the transformer to the first amplifier through a second amplifier having a very high DC amplification factor and a very low AC amplification factor. CONSTITUTION:The output of a first amplifier 7 connected to the secondary side of a transformer 3 is fed back to an non-inverted input terminal 9 of the amplifier 7 through a second amplifier 16 having a very high DC amplification factor and a very low AC amplification factor. Thus, the DC drift generated in the output of the amplifier 7 is cancelled to obtained the error compensation type transformer of stable operation.</p> |
