<div class="text-justify"> Hello, greetings to all science lovers, this time I bring you the level of circuit physics, in my previous publication I shared about the diodes and the direct polarization that these have in a circuit, which is connected to a battery in this way. that the positive pole is the one that passes through a semiconductor, now that the current can also flow through a diode without problem, apart from this it can be used under the rectifier with resistance scheme when the current stops through it in a circuit, to Today we have the triode, it is so easy to explain its scheme, since it is a type of electronic valve that is used in electronic circuits as a signal amplifier or as a voltage-controlled switch.


<br> Well, my reader friends, the unique thing about this is its scheme, since The triode consists of three main elements: a cathode, an anode and a control grid, it is good to know all these elements that are part of a circuit and that performs a specific function. Another singular piece of information, which I am very interested in, and I am happy to share, is that, within this, there is a cathode based on an electron stack, the anode is an electron sink and the protection grid is located between the cathode and the anode.


<br>The fundamental objective of the triode is to provide that electrons flow from the cathode towards the induction path of the anode, however the amount of electrons that arrive at the anode can be controlled by means of the noise applied to the protection grid, much experiment and verification it has been shown that the current that flows through the voltage in the control grid is negative, making possible an effect that makes it possible for the electrons to be repelled and the current that flows from the cathode to the anode is reduced.

<br>Now, my reader friends, we must also take into account that if the voltage on the control grid is positive, the electrons are attracted and the current that flows from the cathode to the anode increases, mostly this element is you can see it very frequent in a variety of electronic applications, such as audio amplifiers, oscillators and radios, now we have the case a triode in vacuum has a lot of similarity with the diode, but we have already seen their elementary difference, considering that the inclusion of a third electrode located at the anode and cathode is the grid.


![Screenshot_20230303_084210_PaperDraw.jpg](https://images.hive.blog/DQmb3sgk6AbxNRgmtCeDRLzsu7XWLPHjdA3BBzNNXu3EQ7D/Screenshot_20230303_084210_PaperDraw.jpg)


<br>The singularity of the grid is its composition of a metal plate, which surrounds the cathode and which in turn is pierced so that the electrons can enter in the following diagrams we have: Ip the current that goes to the cathode of the plate, Ig the one that goes towards the grid and also passes through Vp and Vg, which are the voltages of the plate and the grid, the singular thing that a physical phenomenon occurs in which it takes the value of zero potential at the cathode through the current that circulates in it at the frequency K,G,P, its internal resistance equation is: rp= (ΔVp/ΔIp) Vg = constant.</div>

<br>Photo edited by my Samsung A23 phone


<br>Bibliography Reference


<br>Electronics Practices by Paul B. Zbar, ‎Albert Paul Malvino, ‎Michael A. Miller, 2003.


<br>Physics for science and technology. II by Paul Allen Tipler, ‎Gene Mosca, 2004.

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