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Radioshack Electronics Learning Lab Collaborative Lab Reports



Group Members' Names: John, Griffin, Ian H. Neal P.

Group Name: MIMS electric playas

Overall list of parts used in this lab:
 * LED
 * Integrated circuits
 * Transistors
 * Wires
 * Resistors
 * Capacitors
 * Built in parts (buzzer, Speaker, etc.)


 * Flashing LED Circuit**

The Flashing LED circuit is to make a flashing light. One component of the circuit is the resistors. The resistors resist the circuit so the amount of current wont harm the LED. It also includes an integrated circuit, capacitors, LED, different types of wires. An integrated circuit is like a miniature circuit in a bigger circuit. The capacitors smooth the fluctuating signal. They block constant currents so that the device can measure in time, or pulses. The LED stand for light emitting diode, which means its almost like a smaller light. The wires are connectors to voltage and grounding, and help connect the circuit.The R1 and R2 both help C1 determine the pulse rate. The width of the pulse is controlled by R2 and R3 keeps the LED from blowing out. The only difficulties that were encountered were that the holes were very small and it was easy to put the wires in wrong holes. Also it was difficult to find out what was wrong with the circuit.

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Image 1 (top left)- Flashing LED circuit parts Image 2 (top right)- Flashing LED top view of circuitry

- Function of the circuit: To make the LED in the circuit flash on and off. It flashes because the capacitor holds and releases electricity to the LED

- Components used in the circuit (listing with basic definitions):

LED (light emitting diode), image 3- LED (light emitting diode)
 * Indicator:**

White wire (shortest), Red wire (medium length), image 4- Wires, similar to ones use in circuit
 * Wires:**

555 Integrated circuit (a mini circuit within the circuit),
 * Integrated circuits:**

4 image 5- 555 integrated circuit

Capacitor (stores electricity and releases in signals), 2 image 6- capacitor 10uf
 * Capacitors:**

(to get rid of too much electricity). The R1 and R2 both help C1 determine the pulse rate. The width of the pulse is controlled by R2 and R3 keeps the LED from blowing out.
 * Resistors:**

1 image 7- resistors of the circuit

R1- Yel-vio-red R2- Brn-blk-org R3- Brn-Blk-Red
 * The Resistors:**

- Explanation of difficulties encountered while creating the circuit:Difficulties in this circuit varied from the simple mistake of one wire placed into the wrong place, to a larger mistake of a wrong capacitor size. In the end, we were experienced with the circuit and was able to make the LED flash

media type="custom" key="546057" Video 1- Explanation of flashing LED circuit


 * __Name of Circuit: 555 Blackbox__**

Image 8- 555 black box circuit parts Image 9- 555 black box circuit second view

- Function of the circuit: This circuit, when connected makes a high tone pitch, emitted from the speaker.

- Components used in the circuit (listing with basic definitions):


 * Resistors** (R1, R2, and R3) which resist the current of flow. The resistors help the capacitors to make it a smooth frequency running through the siren.


 * The integrated circuit** (555) is like a mini circuit within the breadboard.

We have the **104 capacitor** which stores the electricity to make a fluctuating signal.

We also have the **wires** which connect it to the batteries and grounds the current.

- Explanation of difficulties encountered while creating the circuit: Some difficulties we had was that it was hard to keep the wires in the springs and make the circuit work. Another thing we had troubles with was making sure every right thing was in the right place. As in every circuit we had trouble placing each and every wire and piece into the correct holes.

- Multimedia (Images, Interviews, Videos- make sure to title and number them)

media type="custom" key="547247"

Video 2- Explanation of parts in 555 circuit


 * Adjustable Siren Circuit (choice circuit)**

- Function of the circuit: We tried to create a fully adjustable siren. The siren sounds off if created correctly

-Components of the circuit:(these are all of the parts the group had to use in the circuit to make the siren work.)

a. Integrated Circuits -4046 -555

b. Resistors- Resistors resist the amount of electricity so that the circuit wont blow or harm the circuits. If there were no resistors in this circuit, the amount of electricity would completely exceed the limits of the kit.

-Brn-Blk-Grn -Ylw-Vio-Ylw

c. Capacitors- The capacitors store the signals for an amount of time then let the electricity go after it was all the way filled up. It would do this if a device would want to measure in pulses. The smaller the capacitor the faster the beeps, and the bigger capacitor the slower the beeps since it takes more time for the electricity to come up through the capacitor.

-10uf -0.001 (102) image 10- capacitors

d. Wires- The wires were used to connect other parts of the circuit to other parts. If a wire was connected to a battery it would act as one wire coming out of the battery starting the circuit. If something was connected to the ground it would be the other side making the current flow in a loop, so it would be able to work. The grounding was also used to make sure that there would be know electric mishaps, or shocks. If the circuit was connected to the ground, there would be a way to rid of excess electricity.

-6 white wires -5 red wires -6 blue wires

-Difficulties while creating the circuit: There actually weren't many difficulties. One of the only difficulties was that there were a lot of parts, and a lot of steps. This created difficulty because the amount of steps was frustrating when the group got lost because they had to go over everything again. When the circuit didn't work, it was frustrated in taking the whole thing apart and having to start from the beginning, running through each of the twenty-six steps, once again.

media type="custom" key="546023" Image 10: Fully Adjustable Siren Circuit Video 3: Explaining Siren Circuit


 * Commentary** **on our work:**

Our group worked well dividing up the work, and we worked well together. We were calm when the circuits didn't work, and we simply tried again. I think this is definitely a good quality for group members to have. Each circuit was completed thoroughly, and whether it worked or not we all felt proud that we completely finished all of the directions. ~Griffin

Our group was a little slow at the beginning of these circuits, and had trouble finding the right parts. We were ok when the circuit didn't work and kept trying to get it right. I'm surprised how good we did by working together. One person would be reading it out and repeat it so that it for sure would work. ~John

I think we all did a good job on this project. We worked together well, and talked through everything that we had problems with. We each did our fair share working on the wiki, and each of us definitely had a good time working with the others. We all did work on the circuits, and even though it was hard to find the right holes, we usually got the lab to work. ~Neal

I think we did a great job. We all worked fairly, spreading out the work evenly. Some of the circuits worked, some didn't. but we still worked well together. i think this is a great group for any science project. ~Ian(from griffins computer because mine doesn't work)

__** Citations ** Google, "Google images." __Google__. 27 Feb 2008 . Links to the images from Google:

http://nassausecurity.com/images/resistors.jpg 1 [|http://www.opamp-electronics.com/~opamp/catalog/images/100uF_16V_Radial_Electrolytic_Capacitor_003054-5.gif] 2 http://www.mmmonkey.co.uk/console/images/sega/ms-md-scart-scart-wires.jpg http://static.flickr.com/79/229698854_ace41e245b_m.jpg 3 http://www.ordigami.net/files/timer555/real_timer555.jpg 4