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=Radioshack Electronics Learning Lab Collaborative Lab Reports=

Group Members' Names: Eric S, Sarah Group Name:

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

Template for entry (Copy the template below exactly!)

LED Flasher Circuit
- Function of the circuit: Produce a flashing light from a LED

- Components used in the circuit (listing with basic definitions): A LED is a Light Emitting Diode

- 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: Produce a flashing light from a LED - Components used in the circuit (listing with basic definitions): A LED is a Light Emitting Diode. A Integrated Circuit is a chip of silver or silicon etched with tiny circuits installed in a package and with external pins. A Wire is a length of conducting metal that electricity flows through in a circuit and connects part of the circuit. A Capacitor is a device that stores electric charge and when full releases the charge, therefore in this circuit maybe making a LED flash. A Resistor is a device that resists the flow of electricity and therefore decreases and controls current. - Explanation of difficulties encountered while creating the circuit: It was very difficult to get the LED to flash. The builders tried turning around the capacitor and the LED and switching the Integrated Circuit and switching capacitors and adding another capacitor, but either the changes made the LED turn off or didn't effect it. - Multimedia (Images, Interviews, Videos- make sure to title and number them) Picture 1: LED circuit __

555 "Black Box" Test Circuit
- Function of the circuit: To produce a tone

- Components used in the circuit (listing with basic definitions): A Wire is a length of conducting metal, often copper, that conducts electricity in a circuit and connects parts of the circuit. A DPDT is a Double-Pole Double-Throw switch, which has many uses and changes component values. An IC is an Integrated circuit which is a chip of silver or silicon etched with tiny circuits installed in a package and with external pins. Speakers are devices that transforms a fluctuating current into sound that can produce a wider range of tones than a buzzer. Resistors are devices that resist the flow of electricity and control current. Capacitor s are device that stores electric charge and when full releases the charge, therefore in this circuit maybe making a LED flash. Push button switches are switches that can be turned on and off and can be used in many circuits.

- Explanation of difficulties encountered while creating the circuit: There were many devices to install and it was difficult to find all of the places to put them. The builders had to figure out how to do new things such as attach wires to springs. It was also difficult to tell which device was which.

- Multimedia (Images, Interviews, Videos- make sure to title and number them) Picture 2: 555 Black Box circuit

Frequency Synthesizer
- Function of the circuit: Split signals into different frequencies to produce tones

- Components used in the circuit (listing with basic definitions): 3 Integrated Circuits are chips of silver or silicon etched with tiny circuits installed in a package and with external pins. A Wire is a length of conducting metal that electricity flows through in a circuit and connects part of the circuit. A Capacitor is a device that stores electric charge and when full releases the charge, Capacitors smooth a fluctuating signal. A Speaker is a device that transforms a fluctuating current into sound that can produce a wider range of tones than a buzzer. A LED is a Light Emitting Diode.

- Explanation of difficulties encountered while creating the circuit: Some of the difficulties the builders encountered while building this circuit were finding all of the right capacitors and integrated circuits. It was also difficult to find all of the holes to put the wires and capacitors in, the builders often had wires in the holes other wires were supposed to be in. There was also difficulty in completing all of the steps in the allotted time.

- Multimedia (Images, Interviews, Videos- make sure to title and number them) Picture 3: Sarah Building the Circuit Picture 4: The Completed Frequency Synthesizer Circuit media type="custom" key="547295" width="102" height="101" Interview