O QUE SIGNIFICA PENTODE EM INGLÊS
Pentodo
Um pentodo é um dispositivo eletrônico com cinco eletrodos ativos. O termo mais comumente se aplica a um tubo de vácuo de amplificação de três grades, que foi inventado pelo holandês Bernhard DH Tellegen em 1926. O pentodo consiste em um invólucro de vidro evacuado contendo cinco eletrodos nesta ordem: um cátodo aquecido por um filamento, um controle grade, uma grade de tela, uma grade de supressores e uma placa. O pentodo foi desenvolvido a partir do tubo de tetrodo pela adição de uma terceira grade, a grade de supressores. Isso serviu para evitar que os elétrons de emissão secundária emitidos pela placa atingissem a grade da tela, o que causou instabilidade e oscilações parasitárias no tetrode. O pentodo está intimamente relacionado com o tetrodo do feixe. Os Pentodes foram amplamente utilizados em equipamentos eletrônicos industriais e de consumo, como rádios e televisores até a década de 1960, quando foram substituídos por transistores. Seu principal uso agora é em aplicações industriais de alta potência, como transmissores de rádio. Os tubos de consumo obsoletos ainda são usados em alguns dispositivos de áudio de tubo de vácuo legados e especiais.
definição de pentode no dicionário inglês
A definição de pentode no dicionário é uma válvula eletrônica com cinco eletrodos: um cátodo, ânodo e três grades. Outra definição de pentodo é ter três terminais na base ou no portão.
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10 LIVROS EM INGLÊS RELACIONADOS COM «PENTODE»
Descubra o uso de
pentode na seguinte seleção bibliográfica. Livros relacionados com
pentode e pequenos extratos deles para contextualizar o seu uso na literatura.
1
A Practical Introduction to Electronic Circuits
This five-electrode valve is the pentode; its circuit symbol is shown in fig. 3.12.
Although the pentode was initially developed to fulfil the needs of high- frequency
amplification, it turns out to have generally more useful characteristics than the ...
Martin Hartley Jones,
1995
2
History of Electron Tubes
Further in 1935, 6.3-V tubes, such as frequency converter tube Ut-6A7 (Vj, = 6.3 V
, Jfc = 0.3 A), twin diode-pentode Ut-6B7 (Vk = 6.3 V, Ik = 0.3 A), detector amplifier
triode UY-76 (Vk = 6.3 V, /A = 0.3 A, /i = 13.8), twin triode UZ-79 (Vfc = 6.3 V, ...
Operation of the beam tetrode is different from that of the pentode in order to
avoid infringement of the 1928 Philips pentode patent [4]. Instead of the electrons
leaving the cathode from all points of the compass and flowing to the anode, the ...
4
International Radio Tube Encyclopaedia
Pentode 1-25 0-02 225 0-3 22 5 0-08 0 600 0-45 200000 1 -2 СК529АХ LF.
Pentode 1'25 0-02 15 0-32 15 0075 1-25 300 0135 50000 1-6 СК5310Х LF.
Pentode 1-25 0-02 15 0-3 15 0-09 1-5 250 01275 60000 1.6 СК532ОХ LF.
Pentode 1-25 ...
... 100 100 cascode cascode cascode pentode pentode pentode 1
transformerless transformer transformer transformerless $160 $180 $200 1 1
derived derived none none none no no no none none none none none none 1 1
transformerless ...
6
Basic Electronics and Linear Circuits
An effort to remove the kink from the characteristics of the tetrode led to another
tube — pentode. 6.6 PENTODE TUBE The pentode tube was originally
developed to overcome the effect of secondary emission in the tetrode tube. A
pentode has ...
N. N. Bhargava, N. N. Bhargava S. C. Gupta D. C. Kulshreshtha,
1984
7
Valve Radio and Audio Repair Handbook
750 — — 1A5 LF Pentode 09 1.4 0.05 90 90 —4.5 — 4.0 0.8 0.85 300 000 255
0.115 25 000 1A6 Heptode 6UX3 2.0 0.06 180 67.5 —3—22.5 — 1.3 2.4 :5300
500 000 — — — 1A7 Pentagricl 1.4 0.05 90 45 0-3 — 1.2 0.6 >'L250 600 000 ...
HOW TO USE YOUR TUBE CHECKER O Use external jumper to plate cap
CALIBRATION TABLE. 1SET UP CHECKER. Procedure, shown for 6CB6
pentode, is same for nearly all tvibes. Tube manual gives value of filament
voltage for step 2, ...
9
Audio Reality: Myths Debunked, Truths Revealed
It is a dual tube containing both a high gain triode and a low power pentode. I am
using it in an unusual configuration. Most regulators use a low impedance triode
as the series pass element but I chose a pentode which has a higher plate ...
10
Practical Oscillator Handbook
Pentode type tubes have a so-called suppressor grid located between the screen
grid and the plate. This added element is operated at cathode potential. Electrons
liberated from the plate bear a negative charge as to the primary electrons ...
10 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «PENTODE»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
pentode no contexto das seguintes notícias.
Mojo, voodoo & secret sauce: The quest for the perfect guitar tone
The pentode is the most popular tube type for guitar amplifier power stages. In addition to the cathode, anode and control grid, the pentode ... «EDN.com, mai 15»
Not A Drum Machine For Bar Bands
The two "cymbal" sound channels ("GATED NOISE") are based on an extremely primitive circuit, with white noise gated by a pentode tube. «Sonic State, abr 15»
Elon Musk Battery Singularity - 1000 Gigabattery factories for Grid …
... that are imminently more practical and likely and fail to meet their basic need....as an example. a Pentode or Triode would be very resistant to ... «Next Big Future, abr 15»
Thöress 300B monoblock power amplifier
Each Thöress also contains a pair of new-old stock Telefunken EL803S pentode tubes, which designer Reinhard Thöress says are carefully ... «Stereophile Magazine, abr 15»
UKIP chief Nigel Farage warns that 'if the Republican Party sticks …
Not bad considering so much negative publicity. UKIP all the way for me. 6. 62. Click to rate. Pentode, Ilchester, United Kingdom, 3 months ago. «Daily Mail, fev 15»
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... for a power pentode that tested identically to the other tubes in the output section, I was able to cure the problem by simply reseating the tube. «Stereophile Magazine, fev 15»
Rare part of one of the world's first computers donated to The …
Given that it takes three pentode and two diode valves to build an “AND” gate, each EDSAC chassis is therefore barely equivalent to even the ... «CitiBlog, fev 15»
Allnic D-5000 DHT D/A processor
The latter two are also directly heated, although, technically speaking, the 5654 is a direct-heated pentode. A quick Internet search revealed ... «Stereophile Magazine, dez 14»
New Hardware Processors and Channel Strips
The HG-2 uses Cinemag input transformers to feed two paths: The main signal path travels through a 6U8A pentode tube stage that then drives ... «MIX, dez 14»
MXL Revelation Solo Microphone
Inside the body you'll find an Electro-Harmonix EF86EH vacuum tube, a reasonably priced version of the EF86 pentode. On the flip side of this ... «MIX, nov 14»