library/Zend/Measure/Current.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category  Zend
  16  * @package   Zend_Measure
  17  * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  18  * @license   http://framework.zend.com/license/new-bsd     New BSD License
  19  * @version   $Id$
  20  */
  21
  22 /**
  23  * Implement needed classes
  24  */
  25 require_once 'Zend/Measure/Abstract.php';
  26 require_once 'Zend/Locale.php';
  27
  28 /**
  29  * Class for handling current conversions
  30  *
  31  * @category   Zend
  32  * @package    Zend_Measure
  33  * @subpackage Zend_Measure_Current
  34  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  35  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  36  */
  37 class Zend_Measure_Current extends Zend_Measure_Abstract
  38 {
  39     const STANDARD = 'AMPERE';
  40
  41     const ABAMPERE             = 'ABAMPERE';
  42     const AMPERE               = 'AMPERE';
  43     const BIOT                 = 'BIOT';
  44     const CENTIAMPERE          = 'CENTIAMPERE';
  45     const COULOMB_PER_SECOND   = 'COULOMB_PER_SECOND';
  46     const DECIAMPERE           = 'DECIAMPERE';
  47     const DEKAAMPERE           = 'DEKAAMPERE';
  48     const ELECTROMAGNETIC_UNIT = 'ELECTROMAGNATIC_UNIT';
  49     const ELECTROSTATIC_UNIT   = 'ELECTROSTATIC_UNIT';
  50     const FRANCLIN_PER_SECOND  = 'FRANCLIN_PER_SECOND';
  51     const GAUSSIAN             = 'GAUSSIAN';
  52     const GIGAAMPERE           = 'GIGAAMPERE';
  53     const GILBERT              = 'GILBERT';
  54     const HECTOAMPERE          = 'HECTOAMPERE';
  55     const KILOAMPERE           = 'KILOAMPERE';
  56     const MEGAAMPERE           = 'MEGAAMPERE';
  57     const MICROAMPERE          = 'MICROAMPERE';
  58     const MILLIAMPERE          = 'MILLIAMPERE';
  59     const NANOAMPERE           = 'NANOAMPERE';
  60     const PICOAMPERE           = 'PICOAMPERE';
  61     const SIEMENS_VOLT         = 'SIEMENS_VOLT';
  62     const STATAMPERE           = 'STATAMPERE';
  63     const TERAAMPERE           = 'TERAAMPERE';
  64     const VOLT_PER_OHM         = 'VOLT_PER_OHM';
  65     const WATT_PER_VOLT        = 'WATT_PER_VOLT';
  66     const WEBER_PER_HENRY      = 'WEBER_PER_HENRY';
  67
  68     /**
  69      * Calculations for all current units
  70      *
  71      * @var array
  72      */
  73     protected $_units = array(
  74         'ABAMPERE'             => array('10',           'abampere'),
  75         'AMPERE'               => array('1',            'A'),
  76         'BIOT'                 => array('10',           'Bi'),
  77         'CENTIAMPERE'          => array('0.01',         'cA'),
  78         'COULOMB_PER_SECOND'   => array('1',            'C/s'),
  79         'DECIAMPERE'           => array('0.1',          'dA'),
  80         'DEKAAMPERE'           => array('10',           'daA'),
  81         'ELECTROMAGNATIC_UNIT' => array('10',           'current emu'),
  82         'ELECTROSTATIC_UNIT'   => array('3.335641e-10', 'current esu'),
  83         'FRANCLIN_PER_SECOND'  => array('3.335641e-10', 'Fr/s'),
  84         'GAUSSIAN'             => array('3.335641e-10', 'G current'),
  85         'GIGAAMPERE'           => array('1.0e+9',       'GA'),
  86         'GILBERT'              => array('0.79577472',   'Gi'),
  87         'HECTOAMPERE'          => array('100',          'hA'),
  88         'KILOAMPERE'           => array('1000',         'kA'),
  89         'MEGAAMPERE'           => array('1000000',      'MA') ,
  90         'MICROAMPERE'          => array('0.000001',     'µA'),
  91         'MILLIAMPERE'          => array('0.001',        'mA'),
  92         'NANOAMPERE'           => array('1.0e-9',       'nA'),
  93         'PICOAMPERE'           => array('1.0e-12',      'pA'),
  94         'SIEMENS_VOLT'         => array('1',            'SV'),
  95         'STATAMPERE'           => array('3.335641e-10', 'statampere'),
  96         'TERAAMPERE'           => array('1.0e+12',      'TA'),
  97         'VOLT_PER_OHM'         => array('1',            'V/Ohm'),
  98         'WATT_PER_VOLT'        => array('1',            'W/V'),
  99         'WEBER_PER_HENRY'      => array('1',            'Wb/H'),
 100         'STANDARD'             => 'AMPERE'
 101     );
 102 }