Velleman EDU01 Manuel d'utilisateur télécharger pdf (Page 7)

www.vellemanprojects.com

Pag. 7

Transistors

A transistor is an amplification device. By means of a small

current, a much larger current is controlled. Transistors come in

two flavours, NPN and PNP-types, depending on the polarity.

With this kit, you receive a BC557 (PNP) and a BC547 (NPN)

transistor. A transistor has 3 pins: Base, Emitter and Collector.

(Velleman part# BC557B, BC547B)

LDR (Light Dependent Resistor)

E B C

PNP

C B E

NPN

BC547

BC557

A Light Dependent Resistor behaves

like a resistor. The resistance various

on the amount of light falling on the

device, it decreases with increasing

light intensity.

Velleman part# LDR04)

1 2 3 4 5 6 7 8 9 10 11 12 ... 31 32

Pas de commentaire

Velleman EDU01 Manuel d'utilisateur Page 7