Asymptotes to a logarithmic graph of gain as a function of frequency.


Related Terms

POPOV'S STABILITY CRITERION

A frequency domain stability test for systems consisting of a linear component described by a transfer function preceded by a nonlinear component characterized by an input-output function), with a unity gain feedback loop surrounding the series connection.

PILOT TUNNEL

A small tunnel or shaft excavated in advance of the main drivage in mining and tunnel building to gain information about the ground, create a free face, and thus simplify the blasting operations.

PILOT PLANT

A small version of a planned industrial plant, built to gain experience in operating the final plant.

LOW-FREQUENCY GAIN

The gain of the voltage amplifier at frequencies less than those frequencies at which this gain is close to its maximum value.

LOW-FREQUENCY CUTOFF

A frequency below which the gain of a system or device decreases rapidly.

LOOP GAIN

1. The ratio of the magnitude of the primary feedback signal in a feedback control system to the magnitude of the actuating signal. 2. Total usable power gain of a carrier terminal or two-wire repeater; maximum usable gain is determined by, and may not exceed, the losses in the closed path.

INVERTING AMPLIFIER

Amplifier whose output polarity is reversed as compared to its input; such an amplifier obtains its negative feedback by a connection from output to input, and with high gain is widely used as an operational amplifier.

INTEGRAL NETWORK

A compensating network which produces high gain at low input frequencies and low gain at high frequencies, and is therefore useful in achieving low steadystate errors. Also known as lagging network; lag network.

HEAT BALANCE

The equilibrium which is known to exist when all sources of heat gain and loss for a given region or body are accounted for.

ISOTROPIC GAIN OF AN ANTENNA

The gain of an antenna in a given direction when the reference antenna is an isotropic antenna isolated in space. Also called ABSOLUTE GAIN OF AN ANTENNA.

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