A tetrode is a vacuum tube (called valve in British English) having four active electrodes. The four electrodes in order from the centre are: a thermionic cathode, first and second grids, and a plate (called anode in British English). There are several varieties of tetrodes, the most common being the screen-grid tube and the beam tetrode.

A tetrode is a type of electrode used in neuroscience for electrophysiological recordings. They are generally used to record the extracellular field potentials from nervous tissue, e.g. the brain. Tetrodes are constructed by bundling together four very small electrodes; each wire is generally less than 30 μm in diameter.

适用场景：Tetrode电极一般是将4根电极丝聚为一股，这些触点相互紧贴，能够在不同位置对同一个细胞放电信号进行监测，从而进行对单个细胞准确的分析，而多个tetrode电极可以组合成阵列，做更多区域的神经信号采集，适用于记录Spike，以及进行微电流刺激。 常规参数：常用电极丝直径为20um/25um，电极丝材质有铂依丝/镍钛丝，长度5mm/8mm。 【超级优惠福利来袭！ 三重福利，参与即送！ 时间有限先到先得！ 活动咨询：17372568376（可加微信）

As the name suggests, the tetrode tube contains four elements: cathode (with the implicit filament, or “heater”), grid, plate, and a new element called the screen. Similar in construction to the grid, the screen was a wire mesh or coil positioned between the grid and plate, connected to a source of positive DC potential (with respect to the ...

tetrode, vacuum-type electron tube with four electrodes. In addition to the cathode filament, anode plate, and control grid, as in the triode, an additional grid, the screen grid, is placed between the control grid and the anode plate. The screen grid acts as an electrostatic shield to protect the control grid from the influence of the plate ...

VTLMB750 Signature售价约为17万港元，它的每声道输出为750W (四极管连接)和300W (三级管连接)，末级使用6550C胆管，推动级为12AT7×1、6350×2。 此机的电源与主体分开，每个声道的整机重达57kg。

The tetrode. As the name suggests, the tetrode tube contained four elements: cathode (with the implicit filament, or "heater"), grid, plate, and a new element called the screen. Similar in construction to the grid, the screen was a wire mesh or coil positioned between the grid and plate, connected to a source of positive DC potential (with ...

2024年7月25日 · Tetrode Construction and Characteristics- in this article, you will learn about Tetrode construction and characteristics in full detail. As its name implies, multi-electrode valves are values or tubes consisting of more than one grid, due to which the acquisition of desirable characteristics, which cannot be achieved from triode, becomes possible.

电极通常可以分为单电极（Single electrode）、双极电极（Stereotrode）和四极电极（Tetrode）。 Tetrode是四电极的意思，是将四根记录电极粘合成一根电极，并对四根记录电极上的电信号进行联动同步采样。 由于多通道在体记录技术采用的是神经元电活动的胞外记录法，如在记录电极周围有多个神经元处于活动状态，使用单电极（single electrode）就只能记录到这些神经元的多单位 (multi-unit) 活动，且难以分离得到单个神经元 (single-unit) 的活动。 四电极则由 …

Construction of Vacuum Tetrode, Working and Applications: Tetrode means four, hence tetrode is a four electrode tube consisting of a cathode, a control grid, a screen grid, and a plate. The constructional features of a typical Vacuum Tetrode are shown schematically in Fig. 5.20 along with the symbolic diagram.