Hbd854 zener theory and design considerations handbook. This was a bad thing before the whole avalanche breakdown, large current. O diodo possui o lado positivo e negativo entao quando for substituilo colocar do mesmo lado. Diodos e circuitos ceifadores professor mario goretti. The analytical technique of removing a zener diode from a circuit and seeing whether or not enough voltage is present to make it conduct is a sound one. All structured data from the file and property namespaces is available under the creative commons cc0 license. Zener diodes when we first talked about practical diodes, it was mentioned that a parameter associated with the diode in the reverse bias region was the breakdown voltage, v br, also known as the peakinverse voltage piv. A free powerpoint ppt presentation displayed as a flash slide show on id.
Abaixo e mostrado a curva caracteristica do diodo zener e sua simbologia. Files are available under licenses specified on their description page. Como calcular a potencia gasta por um equipamento eletrico. Pn junctions are formed in various kinds of semiconductor devices by several techniques. Ppt diodo zener powerpoint presentation free to download. Capacitores, diodos zener 1n, diodo zener bzx, diodo zener smd, diodos retificadores uso geral e fios.
Sep 14, 2017 nessa aula vamos ter uma introducao basica sobre o diodo zener. Aula pratica 03 diodo zener objetivos conhecer o diodo zener. Ph4148 datasheet pdf 100v, 200ma, zener diode, rectifier, ph4148 pdf, ph4148 pinout, ph4148 equivalent, ph4148 replacement, ph4148 schematic, manual. Baixe no formato pdf, txt ou leia online no scribd. Tvszeners transient voltage suppressors zener regulator and. Tvszeners transient voltage suppressors zener regulator. Relatorio sobre diodo zener by cddsa in types school work.
Em qualquer componente, a potencia dissipada e a tensao. Among these are the widely used techniques known as alloying and diffusion which are utilized in fabricating zener pn junctions to provide excellent control over zener breakdown voltage. The active portion of a zener diode is a semiconductor pn junction. This page was last edited on 5 january 2019, at 21. Aula referente a diodos by diego4cori in types school work.
Just because a zener diode happens to be connected in a circuit doesnt guarantee that the full zener voltage will always be dropped across it. Scribd is the worlds largest social reading and publishing site. The purpose of this section is to present the families of motorola zeners that are specified with the key transient voltage suppressor parameters and limits, e. Pdf apostila diodo transistor 1 sergio oliveira santos. Ph4148 datasheet pdf 100v, 200ma, zener diode, rectifier. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. Diodo zener apostila explicativa sobre diodo zener do prof. The zener impedance is derived from the 60 hz ac voltage which results when an ac current having an rms value equal to 10% of the zener current izt or izk is superimposed on izt or izk.
The zener impedance is derived from the 60 hz ac voltage which results when an ac current having an rms value equal to 10% of the zener current i zt or i zk is superimposed on i zt or i zk. Trace as curvas caracteristicas dos componentes, diodos retificador d e diodos zener z. Pdf apostila diodo transistor gabriel dias academia. Pdf apostiladeeletronicabasica1 flavio souza academia.
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