Física

El diodo Zener como estabilizador de voltaje

Diodos de emisión de luz (LEDs)

Fotodiodo

Placas solares

Transistores NPN y PNP

El transistor como un conmutador

Principle

A transistors is used to work as a switch in an electronic circuit.

Tasks

Observation of:

• collector current
• collector-emitter voltage
• base-emitter voltage
• base current

Benefits

Easy to use set-up on a plug-in board.

Interruptor de tiempo retardado

Principle

A transistor circuit is used to demonstrate time controlled delay switch.

Tasks

Investigate the factors responsible for delaying switching of a transistor.

Benefits

Easy to handle plug-in board

Transistores como amplificadores de voltaje

Curvas características de un transistor NPN

Estabilización del punto de operación

Control de temperatura de un transistor

Oscilaciones electromagnéticas no amortiguadas

Circuito eléctrico simple

Principle

The students should first perceive that an electric current can only flow in a closed circuit. To achieve this, the simplest possible circuit is used, in which there is neither a series or parallel connection, and which is therefore called the simple circuit.

The students ...

Medición del voltaje

Mediciones de la corriente

Principle

A simple circuit is examined to introduce the measurement of the strength of an electric current. It is assumed that the students understand the term current and its unit.

When they know that electric current is defined as the number of freely moving electrons which pass a ...