公开(公告)号：US3965441A

公开(公告)日：1976-06-22

申请号：US588760

申请日：1975-06-20

申请人： Neal L. Roy ,  David O. Hansen

发明人： Neal L. Roy ,  David O. Hansen

IPC分类号： H03H5/00 ,  H04B1/16 ,  H03B7/06

CPC分类号： H03H5/12 ,  H04B1/163

摘要： In a parallel resonant circuit having an inductor connected in parallel with a capacitor, a sensing resistor is connected in series with the inductor to sense the current in the resonant circuit. The voltage drop across the sensing resistor is applied to an operational amplifier and the amplified output voltage is fed back to the circuit loop out of phase with the sensed voltage drop so as to reduce the effective circuit resistance and thereby increase the circuit Q.

摘要翻译： 在具有与电容器并联的电感器的并联谐振电路中，感测电阻器与电感器串联连接以感测谐振电路中的电流。 感测电阻上的电压降被施加到运算放大器，并且放大的输出电压被反馈到与所感测的电压降异相的电路环路，以便减小有效的电路电阻，从而增加电路Q。