LAB 5 - LAB 5 ECEN 214 Lab Performed on July 7 2009 Lab due...

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LAB 5 ECEN 214 Lab Performed on July 7, 2009 Lab due on July 14, 2009 -Matt, Nithej
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Procedure: Task 1: Build the latch 1. Create the latch circuit using buttons. 2. Test circuit to make sure it works, ALM will be replaced with a real input. 3. Record data in table 5.1. Task 2: Add buffer and LEDs to the latch circuit 1. Attach an op-amp used as a buffer to the Q output of the latch. 2. Attach a small LED circuit to the op-amp buffer. Task 3: Assemble the final security system. 1. Use the PCB to attach the photo detector and laser diode. 2. Connect the PCB output to the latch S input. 3. Measure the output voltage of the op-amp and record data in table 5.3. 4. Check to see if buzzer makes a noise when the laser is tripped. Sample Calculations: The resistance value that controlled the current through LEDs to 10mA is: 10mA = (12 V – 0.7 V)/R R = 113 Ohms.
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Analysis: The security system is a combination of many simple ideas. A laser is pointed towards a photo detector which in turn outputs a current. Two op-amps are used to
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LAB 5 - LAB 5 ECEN 214 Lab Performed on July 7 2009 Lab due...

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