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Lab 1 Breadboard and Measurement Techniques. Tom Rebold. Calculate the current in this circuit using Ohm’s Law. 3 W. I. 6V. Ohm’s Law, Including Power. Reproduced by permission of Tony van Roon, 2002 http://www.uoguelph.ca/~antoon. How Many Watts dissipated by Resistor?. 300 W. 2A.

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Presentation Transcript
ohm s law including power
Ohm’s Law, Including Power

Reproduced by permission of Tony van Roon, 2002http://www.uoguelph.ca/~antoon

series circuits
Series Circuits
  • One current path, therefore the current is the same everywhere
  • Total resistance is the sum of the individual resistances
parallel circuits
Parallel Circuits
  • More than one current path
  • Total current is the sum of the individual currents
lab the breadboard
Lab--The Breadboard

Vin (6 V)

Vss (Ground)

Each row is

Connected

lab a simple circuit
Lab--A Simple Circuit

Vin (6 V)

Vss (Ground)

Each row is

Connected

a series circuit
A Series Circuit

Vin (6 V)

Vss (Ground)

lab measure volts in parallel
Lab--Measure Volts in Parallel

Because the voltmeter is placed in parallel with the circuit element, you do not need to physically alter your circuit in order to measure voltage.

measure voltage in parallel
Measure Voltage in Parallel

Vin (6 V)

Vss (Ground)

V

measure current in series
Measure Current in Series

You must physically modify your circuit:

1.Create a gap in the segment where you want to measure current.

2. Reconnect the gap using your ammeter as a jumper wire

measure current in series1
Measure Current in Series

Vin (6 V)

Vss (Ground)

A

caution
Caution!!!

If you measure Amps

in parallel, you can

damage the meter

measure resistance out of circuit
Measure Resistance out of circuit

Select the ohms mode, remove the resistor to be measured from your circuit, and place the ohmmeter leads across the resistor leads. It is not OK to use your fingers to do this (your body resistance will change result!)

web references
Web References
  • Learn Electronics Tutorials and Information Pageshttp://www.twysted-pair.com/
  • Electronics Tutorials
    • http://www.electronics-tutorials.com/
  • Tutorials for Learning about Electronics
    • http://www.iguanalabs.com/maintut.htm
  • AC Electricity and Electronics
    • http://www.sweethaven.com/acee/default.htm
web references1
Web References
  • Jones on Stepper Motors
    • http://www.cs.uiowa.edu/~jones/step/
  • Holt Software
    • http://www.holtsoft.com/
    • Turing, Computer Engineering textbooks
  • Tony’s Website
    • http://www.uoguelph.ca/~antoon/
    • Many excellent tutorials, example circuits