Introduction to Sensors Part One

Week 1

Magnets and polarity

Forces between poles

Detecting magnetic polarity

How poles are named

Electro magnets

Current relationship of coils

How to read resistor color code

LEDs –Cathode and Anode

LED cautions

Electrolytic Capacitors

Week 2

Limiting current to a safe level

Buzzers

Comparator circuits

Working with comparators

Dividing voltage is series circuits

Ferrous and non-ferrous materials

Identifying ferrous materials

Vibration detectors

Week 3

Generators and motors

Generating small voltages

Transformers

What is an Op-Amp

Using Op-Amps as amplifiers

Potentiometers and how to use them

Using the bargraph readout in the sensor lab

Week 4

Magnetic Induction

What is induction?

Generating magnetic flux

What are oscillators?

What do oscillators do?

Build an oscillator

Electromagnetic waves in the air around us

Speakers and how they work

Detecting electromagnetic waves

Week 5

Passing A.C. voltages through capacitors

Blocking D.C. voltages with capacitors

Inverting and non-inverting inputs on an Op-Amp

Power MOSFETs use

What are input devices?

Induction coils used as an input device

Processing signals

Timer circuits

Use a 555 timer

What is a MOSFET?

Static precautions used with MOS devices

Week 6

Digital Circuits

Gates

Inverters

AND Gates

NAND

Logic levels 0 and 1

Truth tables and how they are used

Resistance, Reactance and Impedance

Photo Resistors, characteristics

Week 7

Static and Dynamic tests

Manipulating gate circuits to test them

Checking gate circuits with a meter

What will logic 0 measure with a meter?

What will logic 1 measure with a meter?

Week 8

Oscilloscopes and their use

Static precautions with gate circuits

Identifying the terminals of a power MOSFET

What is a Gate Voltage?

Threshold Voltage

Converting NAND gates to inverters