Solar Energy Lab 1 ENGR 1181 Todays Learning

Solar Energy Lab 1 ENGR 1181

Today's Learning Objectives § After today's class, students will be able to: • Describe and build both a calibration and solar meter circuit • Convert a binary number to a decimal value • Discuss how a potentiometer works • Explain how a photodiode light sensor works • Given a schematic drawing, build a working electronic circuit on a breadboard • Use a Photodiode Light Sensor and a Binary Voltmeter circuit to measure the intensity of light (in Watts/m 2)

Solar Energy Meter In lab today, you will build a solar energy meter circuit to measure the energy intensity from a light source. Sun light solar energy meter Output in Watts / m 2

Solar Energy Meter Components Banana Plug Wires 1 Black and 1 Red DMM +5 Volt Power Module Breadboard (Pre-Wired) Circuit Components LEDs

Solar Energy Meter Circuit • • Schematic Breadboard Layout

Binary Voltmeter Calibration Circuit

Trimpot – variable voltage § § Total resistance (Pin 1 to Pin 3) = 10 k. Ohms Resistance at Pin 2 varies by turning the adjustment knob Produces Vadj output voltage of 0 to +5 Volts on Pin 2 It is a variable resistor Vadj

8 -Bit Binary Display MSB LSB • The LEDs at the output of the Binary Voltmeter are labeled from D 7 to D 0 • The LEDs are either "ON" or "OFF" – for binary numbers "1" and "0" • D 7 is the Most Significant Bit (MSB) and D 0 is the Least Significant Bit (LSB) • Any 8 -bit binary number can be converted to a decimal number

Task 1 – Build the Calibration Circuit

Task 1 – Calibration Circuit Closeup

Task 2 – Enter Data into the Worksheet

Task 3 – Build the Solar Energy Meter Circuit

Task 3 – Solar Energy Meter Circuit Closeup

Task 4 – Use the Solar Energy Meter to measure the intensity of a light source

Task 4 – Record the Light Intensity data in the Lab Worksheet

Topic Document Type Marble Delivery System None Quality and Productivity Executive Summary Circuits Executive Summary Solar Energy – Part 1 -- Solar Energy – Part 2 Memo (Combined) Beam Bending Memo Wind Turbine 1 -- Wind Turbine 2 Report (Combined) Problem Solving Project 1 Problem Solving Project 2 Problem Solving Project 3 Project Notebook (Combined)