Wednesday, January 8, 2014

Constructing a 5V power supply and simple series circuit

     The first exercise of the day was to practice making soldering connections to a soldering board. We were given a selection of surplus components including resistors, monolithic and ceramic capacitors, and diodes. We were to make at least 20 solder connections using these components, being careful to completely cover the pad and cover the lead without making contact with other pads.

     The next exercise was to construct a 5V power supply which we will use to provide power to our breadboards. In order to do this, we had to cut off the little plug at the end and strip the outer insulation to expose the two conducting wires. We then soldered those wires to a tiny connector using a butt joint and heat shrink tubing was added to prevent short circuits . Next, the polarity of each wire was determined using a multi meter.
     The final exercise was to create a simple series circuit which would be powered by our newly constructed power supply. The circuit was made on a breadboard using a 1 kilo Ohm resistor and an LED. The resistor was connected between the positive end of the power supply and the LED with the negative lead of the LED connected to ground. The actual circuit is nearly impossible to see from this picture, but you can clearly see the LED is lighting up.

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