The TSU Advisor

Information of particular value to SEPS students building projects.

Important note: The information in these pages constitutes no course material. It contains errors and must be used with discretion.

TSU Advisor index

* Conversion tables - inches to millimetres etc.
* Physical constants
* Decibels demystified - a guide to the unit
* Electronics Prototype System
* Preferred values
* Producing wound components
* Interface connectors - Pinouts, signals
* Logic circuit construction - the Enamel Wiring Pen
* Operating the Network Analyzer
* Optoelectronics - the visible spectrum
* Personal Support
* Purchasing Guide - Where to obtain the part you want
* Voltage regulators

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Obtaining personal support

Please visit the Technical Services Unit between 10:30 and 11:30 on Thursdays. Richard Clarke will make every effort to be available then. If not then please ask for Eric Worpe.

You may also try contacting us at other times, or by e-mail.

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Conversion tables

Conversion tables
From To Multiply
by
acres hectares 0.4047
arc minute radians 2.9089E-04
arc second radians 4.8481E-06
bars pounds per square inch 14.508
centigrade Fahrenheit 9/5 then add 32.0
degree of angle radians 1.7453E-02
electron volts joules 1.60210E-19
ergs joules 1.0e-7
feet metres 0.3048
gallon (UK) litres 4.5461
gauss teslas 1e-4
grams per litre kilograms per metre3 1.0
hectares acres 2.471
horsepower watts 746
inches metres 0.0254
inches millimetres 25.4
kilometres miles 0.6214
litres gallons (UK)0.21998
litres pints 1.76
litres metres3 0.001
metres inches 39.37
miles metres 1609.3
nautical
miles
metres 1853.3
newtons kilogramme-force 0.101972
ounces grams 28.35
pint litre 0.568
ton (UK) kilograms 1 016.05
yard metre 0.9144

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Preferred values for passive components

Preferred values
Value E6  E12 E24
1.0 * * *
1.1 - - *
1.2 - * *
1.3 - - *
1.5 * * *
1.6 - - *
1.8 - * *
2.0 - - *
2.2 * * *
2.4 - - *
2.7 - * *
3.0 - - *
3.3 * * *
3.6 - - *
3.9 - * *
4.3 - - *
4.7 * * *
5.1 - - *
5.6 - * *
6.2 - - *
6.8 * * *
7.5 - - *
8.2 - * *
9.1 - - *

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Physical Constants

Quantities marked D are exact values by definition.

Physical Constants
Quantity Symbol Value Unit
Permeability of a vacuum μ0 1.256 637×10-6 H m-1
Permittivity of a vacuum ε0 8.854 186×10-12 F m-1
Speed of light in a vacuum D c 2.997 924 58×108 m s-1
Standard Gravity D gn 9.806 65 m s-2

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E-mail: R.Clarke@surrey.ac.uk

Last modified: 2013 May 28th.