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=Radioshack Electronics Learning Lab Collaborative Lab Reports=

Group Members' Names: Katie, Courtney, and Nupur

Group Name:

Write in third person in all cases as well as in complete sentences.

Template for entry (Copy the template below exactly!)

Name of Circuit
- Function of the circuit:

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

- Explanation of difficulties encountered while creating the circuit:

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

LED Flasher circuit

 * - Function of the circuit:** The LED FLasher circuit made a LED flash. When the switch was turned on the current went through the wires and resistors until it came to the capacitor. The capacitor took in energy and let it out in pulses which made the LED flash.


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

- __Bread board__- where the circuit is built - __Integrated Circuit-__ (555) Is a microscopic electronic circuit etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins. __- Capacitor-__ Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses. - __Resistor-__Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a voltage into a smaller voltage. > -__LED__- (Light Emiting Diode) emites light of a single color > > - **Explanation of difficulties encountered while creating the circuit:** The LED shined but didn't flash because the wrong capacitor was used. The first time the circuit was built the wrong resistors were used, and some of the wires weren't in the right places. > > **- Multimedia (Images, Interviews, Videos- make sure to title and number them):** > > > Figure 1: Light Emitting Diode > "How light Emitting Diodes work." __How Stuff Works__. © 1998-2008 HowStuffWorks, Inc. . 18 Feb 2008 <[|http://static.howstuffworks.com/gif/led>.] > > media type="custom" key="513693" > Video 1: Interview of LED flasher circuit. >
 * yel-vio-red
 * brn-blk-org
 * brn-blk-red

555 Blackbox circuit
__Bread board-__ where the circuit was built __Integrated Circuit-__ (555) Is a microscopic electronic circuit etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins. __Capacitor-__ Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses. __Resistor__- Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a voltage into a smaller voltage. > > **- Explanation of difficulties encountered while creating the circuit:** For this circuit, the last peice was put into the wrong place. That made the circuit not work. Other than that there were no other problems. > > **- Multimedia (Images, Interviews, Videos- make sure to title and number them)** > > > Figure 2: 555 Blackbox Circuit > > media type="custom" key="527795" > Video 2:555 Black Box Interview with Courtney and Nupur > > --
 * Function of the circuit:**
 * - Components used in the circuit (listing with basic definitions):**
 * R1:brown-black-orange
 * R2: brown-black red
 * R3: brown-black-brown

Fully AdjustableSiren
> - Function of the circuit: It creates a siren with a tone that can be controled by the potentiometers on the bread board > > - Components used in the circuit (listing with basic definitions): - __2 Integrated Circuits__- Microscopic electronic circuits etched on a sliver of silicon called a "chip" and installed in a plastic, metal, or ceramic package with external leads or pins. - __3 Capacitors__- Capacitors store an electrical charge. Capacitors smooth a fluctuating signal. They block continuous current while passing current pulses. Capacitors in series with resistors are used in circuits that measure time or generate a series of pulses. - __2 Resistors__- Resistors resist the flow of electricity. This makes them very useful for reducing current to LEDs, which can be damaged by too much current. Resistors are also used to divide a voltage into a smaller voltage. >> >> - Explanation of difficulties encountered while creating the circuit: There were no difficulties- the circuit worked the first time - Multimedia (Images, Interviews, Videos- make sure to title and number them)
 * 555
 * 4046
 * C2-1 uF
 * C1-10 uF
 * C3-0.0001 (102)
 * R4- 1M :brown-black-green
 * R5- 470K: yellow-violet-red

media type="custom" key="541763" Video 3: Interview of the Fully Adjustable Siren circuit with Courtney and Katie