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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
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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/m2)
Solar Energy Meter In lab today, you will build a solar energy meter circuit to measure the energy intensity from a light source. solar energy meter Output in Watts / m2 Sun light
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
Trimpot– variable voltage • Total resistance (Pin 1 to Pin 3) = 10 kOhms • 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 D7 to D0 • The LEDs are either "ON" or "OFF" – for binary numbers "1" and "0" • D7 is the Most Significant Bit (MSB) and D0 is the Least Significant Bit (LSB) • Any 8-bit binary number can be converted to a decimal number
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