| 摘要 |
PURPOSE:To decrease number of output terminals by amplifying a positive-phase signal by a current amplifier at each load to impress to one end of each load and amplifying a negative-phase signal by a single current amplifier so as to impress to the other end of each load. CONSTITUTION:The input signal of a recording amplifier circuit 1 is amplified by a voltage amplifier 2b, the positive-phase signal outputted from an output 5 is amplified by current amplifiers 3c, 3d and impressed to one end of loads 4a, 4b respectively. On the other hand, the negative-phase signal outputted from an output 6 of the amplifier 2b is amplified by a current amplifier 7 and impressed to the other end of the loads 4a, 4b. Thus, number of output terminals of the circuit 1 is suppressed to be a number being the total number of loads added by 1.
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