tetrode

American  

[te-trohd] / ˈtɛ troʊd /

noun

Electronics.

1. a vacuum tube containing four electrodes, usually a plate, two grids, and a cathode.

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tetrode British  

/ ˈtɛtrəʊd /

noun

1. an electronic valve having four electrodes, namely a cathode, control grid, screen grid, and anode

2. (modifier) (of a transistor) having two terminals on the base or gate to improve the performance at high frequencies

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tetrode Scientific  

/ tĕt′rōd′ /

1. A four-element electron tube containing an anode, cathode, control grid, and additional electrode called the screen. They function in the same manner as triode, but are more effective at higher frequencies due to the effect of the screen.

2. See more at screen See also pentode

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Etymology

Origin of tetrode

First recorded in 1900–05; tetr- + -ode ¹

Example Sentences

If two clusters on the same tetrode on two subsequent recording sessions had a Mahallanobis distance of less than 20, they were considered to belong to the same unit.

From Nature • Mar. 28, 2017

The sum of the four signals from each tetrode was computed, and thresholds of −3 and +3 s.d. were applied to the summed data.

From Nature • Mar. 28, 2017

Each waveform was then considered in a 7-dimensional space defined by its projection onto the three principal components and its peak-to-peak amplitudes on the four tetrode wires.

From Nature • Mar. 28, 2017

Locations of all tetrodes were identified by comparing relative locations of tracks in the brain with the locations of individual tetrode guide tubes within the microdrive assembly.

From Nature • Mar. 28, 2017

The power of the band-passed signal was computed, smoothed with a 100-point square window, and the median value was measured across the four wires of each tetrode.

From Nature • Mar. 28, 2017