• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What are Diodes?

Extracts from this document...

Introduction

Sam Newman 10E

image00.png

The Symbol for a basic diode is:        image01.pngimage01.png

The

...read more.

Middle

image00.png

A diode is an electronic device that permits current flow  in only one direction. Most diodes are semiconductors.

A diode has a low resistance to electric current in one direction and a high resistance to it in the reverse direction. This makes a diode useful as a rectifier, which can convert alternating current (AC) into direct current (DC).

A diode using this property is called a Zener diode. It

...read more.

Conclusion

Also a perfect diode would turn on the instant that any voltage is applied not 0.6v as the diodes we have at the moment turn on.

If they turned on and off as I have said above they would be much more efficient and more useful for the person using them.

I think that that as technology advances in the future diodes will get closer to being a perfect diode.

Diodes - page  of

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Electrical & Thermal Physics essays

  1. Investigating the Capacitance of a Parallel-Plate.

    5.8 V as displayed by the voltmeter. The two plates are fully overlapped. We compare the differences on the current without a dielectric (I0) and with a dielectric (I). Results: I0: 0.94 I: 1.52 As 1.62 Possible percentage error = = 1.72% Possible absolute error = = 0.0279 We could then verify that a dielectric substance is able to increase the permittivity.

  2. Is polymer electronics the future of TV screens

    Organic Layers Conducting Layers - Made of organic plastic molecules which transport 'holes' from the anode Emissive layer - Made from different organic plastic molecules which transports electrons from the cathode.

  1. Using an LDR to detect the intensity of plane polarised light allowed through a ...

    Detector Now that I have considered my choice of emitter, I think it is necessary to discuss why I chosen my particular sensor. There were four different components I had the chance of using. The advantages and disadvantages of all four are contained in the table overleaf.

  2. Choosing a light source

    it's found when the light diffracts from the centre of the spectra. 2. You need to know M (which is the order i.e. it could be 1,2,3,4, or 5 etc) this value is sometimes given unless you need to find it (calculate it).

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work