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Este ejemplo representa un oscilador de desplazamiento de fase realizado con un transistor JFET Canal-N, dos resistencias y una red de re-alimentación constituida por tres resistencias y tres condensadores idénticos. El condensador CS se utiliza para una configuración de drenaje común y CO permite desacoplar la salida de la red de re-alimentación. Esta red es destacada en un recuadro coloreado de fondo, que se genera usando la biblioteca de TiKZ "backgrounds"
Notaciones:
Vo = tensión de salida.
VDD= polarización positiva en el terminal de drenaje.
Todos los componentes eléctricos y electrónicos carecen de valores o tipos.
Este esquema es una adaptación de la figura que se encuentra en la página http://www.circuitstoday.com/fet-applications.
his project is part of the FlowNet initiative.
FlowNet aims at providing Internet freedom and free flow
information through socially informed, censor resistant online
social networks. My contribution for FLowNet is in devel-
oping an Android application, SecurePost. The requirement
for SecurePost is two-fold. First, the system should facilitate
secure, anonymous, group communication within a closed
group of trusted members. Second, the general public on the
Internet viewing this content, should be able to verify that the
content was generated only by the said closed group of trusted
members. The system consists of an Android client application,
a proxy server and a browser-plugin. The OSNs supported by
this system are Twitter and Facebook.
Power surges, blackouts and brownouts caused many troubles to computer users. Let’s face it: not every computer in the world is equipped with a battery pack or a UPS. The consequences of a power surge or blackout can be severe for your information. Let’s see what can happen to your file if the power is suddenly lost.