1. CIRCUIT TO TEST
THE OPERATION OF
A RELAY
Jahir Iván Alemán Ernesto Mares Sosa
Erick Eduardo Garza Loria
5ºA NOVIEMBRE 2012

2. 4. Escucha, interpreta y emite mensajes pertinentes en distintos
contextos mediante la utilización de medios, códigos y
herramientas apropiados.
4.5. Maneja las tecnologías de la información y la
comunicación para obtener información y expresar ideas.
8. Participa y colabora de manera efectiva en equipos diversos.
8.2 Aporta puntos de vista con apertura y considera los de otras
personas de manera reflexiva.

3. 11. Se comunica en una lengua extranjera mediante
un discurso, lógico, oral o escrito, congruente con la
situación comunicativa.
manera reflexiva.

4. Protoboard relay led
Transistor battery resistance 330 ohms
Photoresistance wires connection

5.  First transistor is connected as shown in the image
 After the relay is connected to the collector of
transistor
Then connects the photoresistance from the positive
of the battery to the base of transistor

6.  then connect a wire from the positive of the battery
to common and then connected the LED to the
right leg of the relay with a resistor to the negative
of the battery
 finally connect the battery to the wires
corresponding negative and positive

7.  This practice I found very useful
for testing the performance of
electronic devices
 This activity tests the operation of
the relay and how the passage of the
current it generates an
electromagnetic field which serves
as a magnet to activate the relay

8.  This practice we can demonstrate
the multiple functions that can
make the passage of electric
current