Cascaded amplifier with frequency sensitive coupling

Details Cascaded amplifier with frequency sensitive coupling Cascaded amplifier with frequency sensitive coupling

1977-08-31

1978-06-13

Mullins, James B.

Amplifiers

Signal feedback

Plural amplifier channels

330126, 330151, H03F 136, H03F 368

Patent

active

040951880

ABSTRACT:
An amplifier having a plurality of cascaded stages each comprising an operational amplifier having an output connected to a first output terminal of the amplifier through two series-connected resistors and a capacitor, the junction point of the two resistors being connected to the negative input of the operational amplifier, and the junction point of the capacitor and one of the series-connected resistors being connected to the positive input of a next operational amplifier, the output of each operational amplifier being additionally connected to said first output terminal through a variable resistor having a movable contact connected to the second output terminal of the amplifier.

REFERENCES:
patent: 3818362 (1974-06-01), van Sluys

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