MINI PROJECTTHE CONSTRUCTION OF 9-12 VOLT DC POWER SUPPLY

NAME : SUARDI BIN NANANGMATRIX NUMBER : D20091035131

OBJECTIVESRecognize some of the electronic

components.Gain experience in assembling and

soldering components to the circuit board.

Check and test components such as diodes, LED and resistors.

Test and measure some parameters of the power supply.

Trouble shooting for the faulty components and power supply.

APPARATUS

Step-down power transformer (0 - 9) volts.

Plastic casing.

AC switch (ON – OFF)

APPARATUS

Diodes (4 units), 1N4001 or higher

Capacitor (2200 µF , 35 volts rating)

Binding post (1 red and 1 black)

APPARATUS

LED (Red or Green or Yellow)

Strip-circuit board (PCB).

Resistor

APPARATUS

Solder

Wire

PROCEDURES

Circuit configuration

PROCEDURES

Circuit configuration

PROCEDURES

DATA AND ANALYSIS

AC output of your power transformer

10.86 V

DATA AND ANALYSIS

DC output of your power supply

13.98 V

DATA AND ANALYSIS

output ripple of your power supply

1.1mV

ripple factor of your power supply

Ripple Factor =0.008%

PRECAUTIONCheck all diode and LED to make sure they

are in good condition using ohmmeterMAKE SURE the positive (P) and negative (N)

polarity of the diodes are correctly connectedProperly solder all components leads to the

circuit board. Make sure there is no dry -joint or short circuit between copper tracks of the circuit board

Make sure cut short all the components leadsMake sure connection made between wire are

insulate properly to avoid contact

FINISH