A summary of current, voltage, resistance and power.
Showing posts with label Electricity. Show all posts
Showing posts with label Electricity. Show all posts
Friday, 28 February 2014
Tuesday, 25 February 2014
Saturday, 22 February 2014
Hewitt-Drew-it! PHYSICS 97. Circuit Resistances
Finding equivalent resistances for complex circuits.
Wednesday, 19 February 2014
Hewitt-Drew-it! PHYSICS 96. Equivalent Resistance
Rules for equivalent resistance for series and parallel circuits explained.
Sunday, 16 February 2014
Thursday, 13 February 2014
Monday, 10 February 2014
Hewitt-Drew-it! PHYSICS 93. Water and Electron Circuits
The similarities and differences between electric and hydraulic circuits.
Friday, 7 February 2014
Hewitt-Drew-it! PHYSICS 92. Voltage Drop
Why the sum of the voltages across bulbs in series adds to battery voltage.
Tuesday, 4 February 2014
Saturday, 1 February 2014
Hewitt-Drew-it! PHYSICS 90. Electric Potential
Compared with electric potential energy, with novel situations.
Wednesday, 29 January 2014
Sunday, 26 January 2014
Thursday, 23 January 2014
Wednesday, 11 September 2013
Parallel RC circuits
US Department of Defense 1972-01-01
Reviews the operation of parallel RC circuit and specifically points out how to solve for branch currents and total impedance by using ohm's law. Reviews vector representations and show how approximate total current and phase angle are found by measuring the vectors. Introduces trigonometric functions used to solve for total impedance, total current, phase angle, and power factor. Concludes with a brief review of apparent and true power and their relationship to the power factor.
Reviews the operation of parallel RC circuit and specifically points out how to solve for branch currents and total impedance by using ohm's law. Reviews vector representations and show how approximate total current and phase angle are found by measuring the vectors. Introduces trigonometric functions used to solve for total impedance, total current, phase angle, and power factor. Concludes with a brief review of apparent and true power and their relationship to the power factor.
Friday, 6 September 2013
Series RC Circuits
US Department of Defense 1972
Reviews the use of vector analysis, pythagorean theorem, and trogonometric functions as applied to a series RC ciruit. Graphically illustrates the consruction of the impedance and voltage vector. Shows use of Ohm's law for AC to solve for unknown circuit parameters. Uses an oscilloscope to demonstrate phase relationships and relative amplitudes.
Monday, 2 September 2013
Voltage Doublers
US Department of Defense - 1970-01-01
Explains the theory of operation of a voltage doubler. Traces charge and discharge paths for the capacitors. Determines peak output voltage and ripple frequency.
Explains the theory of operation of a voltage doubler. Traces charge and discharge paths for the capacitors. Determines peak output voltage and ripple frequency.
Saturday, 16 March 2013
The Pain of Electricity (AC versus DC)
Have you always wondered if you shocked yourself with electricity, which type of electricity would hurt more: AC (Alternating Current) or DC (Direct Current)? Wait no more!
Friday, 25 January 2013
The Story of Electricity 2
Shock and Awe - The Story of Electricity. The Age of Invention: Jim Al-Khalili reveals how scientists and engineers unlocked the nature of electricity in an extraordinary century of innovation and invention.
Saturday, 5 May 2012
Ohm's law tutorial: Physics for neuroscience and cardiac physiology
Easy to learn this basic physics concept. Electrical physics/engineering, has much in common with neuroscience/cardiophysiology.
Thursday, 22 March 2012
Subscribe to:
Posts (Atom)