0000000711 00000 n A device to do so is called a Hall probe. dup 124 /G124 put dup 215 /G215 put dup 2 /G2 put dup 134 /G134 put end def dup 126 /G126 put dup 66 /G66 put 0000011115 00000 n dup 187 /G187 put Applications of Hall Effect Sensor. dup 137 /G137 put dup 101 /G101 put /FontMatrix [0.00049 0 0 0.00049 0 0] readonly def 0000013171 00000 n dup 157 /G157 put dup 63 /G63 put dup 162 /G162 put dup 189 /G189 put dup 213 /G213 put Early applications using the Hall effect were restricted to the laboratory because the output voltage obtainable from the then available materials was too low to be of much practical use. 0000000787 00000 n dup 2 /G2 put dup 107 /G107 put dup 168 /G168 put dup 22 /G22 put dup 186 /G186 put dup 93 /G93 put dup 220 /G220 put dup 24 /G24 put Qy��������O����E�Z�=z~P�:�"�%��#��"�oB���z�lL�S����C�8\|��I��F���SB̊�j However, these were severely limited by cost. dup 28 /G28 put dup 161 /G161 put The Hall Effect 1 Background In this experiment, the Hall Effect will be used to study some of the physics of charge transport in metal and semiconductor samples. dup 157 /G157 put 0000001502 00000 n dup 193 /G193 put dup 106 /G106 put dup 141 /G141 put dup 108 /G108 put dup 147 /G147 put dup 118 /G118 put dup 158 /G158 put dup 63 /G63 put dup 114 /G114 put dup 102 /G102 put dup 47 /G47 put dup 218 /G218 put dup 219 /G219 put dup 208 /G208 put dup 103 /G103 put dup 120 /G120 put dup 148 /G148 put Hall Effect definition. dup 129 /G129 put dup 188 /G188 put /isFixedPitch false def dup 173 /G173 put dup 174 /G174 put 0000001562 00000 n dup 143 /G143 put dup 204 /G204 put dup 210 /G210 put ����B�t"�����)P��*R7�S2�-���[(|��!��W�V�=� dup 158 /G158 put dup 71 /G71 put dup 125 /G125 put dup 169 /G169 put dup 59 /G59 put /UnderlinePosition -217 def dup 114 /G114 put dup 136 /G136 put dup 138 /G138 put dup 4 /G4 put dup 20 /G20 put During that time… dup 40 /G40 put dup 116 /G116 put dup 61 /G61 put dup 77 /G77 put Application of hall effect (video) Because the Hall emf is proportional to B, the Hall effect can be used to measure magnetic fields. 0000017183 00000 n /FontName /CPNKGF+Arial.Narrow.Bold0233 def This effect consists in the appearance of an electric field called Hall field EH r, due to the deviation of the charge carrier trajectories by an external magnetic field. dup 27 /G27 put dup 194 /G194 put dup 16 /G16 put dup 56 /G56 put dup 175 /G175 put dup 26 /G26 put dup 55 /G55 put dup 72 /G72 put dup 17 /G17 put dup 92 /G92 put 0000016806 00000 n 0000009719 00000 n dup 150 /G150 put 0000009000 00000 n dup 83 /G83 put dup 100 /G100 put dup 4 /G4 put dup 108 /G108 put dup 181 /G181 put dup 217 /G217 put dup 130 /G130 put For application help: call 1-800-537-6945 Honeywell • MICRO SWITCH Sensing and Control 3 &KDSWHU +DOO(IIHFW6HQVRUV Introduction The Hall effect was discovered by Dr. Edwin Hall in 1879 while he was a doctoral candidate at Johns Hopkins University The Hall effect is a galvanomagnetic** effect, which was observed for the first time by E. H. Hall in 1880. dup 80 /G80 put dup 6 /G6 put dup 50 /G50 put dup 155 /G155 put The electric potential difierence between the two sides of the conductor is known as the Hall volt-age VH. dup 48 /G48 put dup 80 /G80 put dup 36 /G36 put dup 51 /G51 put dup 88 /G88 put dup 110 /G110 put 0 1 255 {1 index exch /.notdef put} for dup 18 /G18 put dup 3 /G3 put dup 214 /G214 put We will study the Hall effect in a parallelepipedic semiconductor sample of sizes a, b, c (see Figure 1). dup 86 /G86 put dup 30 /G30 put This is the famous Quantum Hall Effect4. dup 208 /G208 put 0000011306 00000 n dup 219 /G219 put dup 204 /G204 put The effect was discovered by E.H. Hall in 1879. dup 183 /G183 put dup 128 /G128 put 0000013062 00000 n dup 0 /G0 put dup 133 /G133 put dup 33 /G33 put dup 10 /G10 put dup 216 /G216 put The applications of Hall-effect sensors are as follows: When combined with threshold detection they act as a switch. dup 44 /G44 put 0000001093 00000 n dup 90 /G90 put dup 135 /G135 put dup 47 /G47 put dup 145 /G145 put /PaintType 0 def dup 32 /G32 put �@���N�B�⢐�O��!�r-���mw�۽������S������˦;��R�0 dup 167 /G167 put Watch also animation of H effect. dup 15 /G15 put dup 194 /G194 put dup 67 /G67 put dup 45 /G45 put dup 82 /G82 put /PaintType 0 def dup 14 /G14 put dup 190 /G190 put dup 151 /G151 put dup 182 /G182 put The Hall coefficient is calculated based on experimental results and used to measure fundamental semiconductor properties of the given doped sample of dup 195 /G195 put dup 117 /G117 put 0000009321 00000 n dup 6 /G6 put Chapter 7 • Application Examples For application help: call 1-800-537-6945 Honeywell • MICRO SWITCH Sensing and Control 65 Linear output sensor concepts Linear output Hall effect sensors can provide mechanical and electrical designers with significant position and current sensing capabilities. dup 178 /G178 put dup 38 /G38 put dup 137 /G137 put dup 99 /G99 put dup 58 /G58 put dup 146 /G146 put currentfile eexec trailer << /Size 133 /Info 111 0 R /Root 116 0 R /Prev 283398 /ID[<92fd7343827dee24413f98d8fdebbf88><92fd7343827dee24413f98d8fdebbf88>] >> startxref 0 %%EOF 116 0 obj << /Type /Catalog /Pages 110 0 R >> endobj 131 0 obj << /S 242 /T 294 /Filter /FlateDecode /Length 132 0 R >> stream dup 40 /G40 put %!FontType1-1.0: CPNKGF+Arial.Narrow.Bold0233 1 19 occur at Hall resistances of h/2e2, h/3e2, h/4e2, and so on. dup 12 /G12 put /FullName (Arial_Narrow_Bold_:_1991) def dup 192 /G192 put dup 180 /G180 put dup 103 /G103 put dup 148 /G148 put dup 49 /G49 put dup 109 /G109 put dup 160 /G160 put from Hall Effect measurements, which are a basic tool for the determination of mobilities. /Encoding 256 array dup 65 /G65 put dup 212 /G212 put dup 150 /G150 put dup 197 /G197 put dup 122 /G122 put /ItalicAngle 0 def 13 dict begin dup 146 /G146 put dup 41 /G41 put dup 164 /G164 put dup 69 /G69 put /BaseFontName (Arial.Narrow.Bold0233) def /UnderlineThickness 150 def dup 98 /G98 put 0000000842 00000 n dup 180 /G180 put dup 142 /G142 put dup 211 /G211 put systems, at very low temperature and large fields, the Hall resistance show a step-like (rather than linear) dependence on B. 0000001115 00000 n dup 35 /G35 put dup 117 /G117 put dup 119 /G119 put dup 104 /G104 put dup 122 /G122 put dup 112 /G112 put dup 16 /G16 put These steps are completely independent of the type of sample and quantitized to values h/e2m, where m is an integer. dup 184 /G184 put dup 97 /G97 put dup 189 /G189 put dup 55 /G55 put dup 86 /G86 put /isFixedPitch false def dup 60 /G60 put 0000015641 00000 n dup 83 /G83 put /FontInfo 12 dict dup begin dup 205 /G205 put dup 176 /G176 put dup 179 /G179 put dup 172 /G172 put dup 9 /G9 put dup 129 /G129 put dup 5 /G5 put dup 187 /G187 put H�c```#NC �� �c!c%%E53�~�R+�*�ؒs�njf���KHɖ.��Q1�������-���5Ӻ����Z�>?c�ad��l�[�����9�l �%����#�0��Kȕ@�,|�@��K�g�e� z��ᝡ��N��4� ��pa��f`᷃�g������2�,�����4��i�6{���N3WF���5ib�F �R* endstream endobj 132 0 obj 231 endobj 117 0 obj << /Type /Page /Parent 113 0 R /Resources 118 0 R /Contents 127 0 R /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 /Thumb 75 0 R >> endobj 118 0 obj << /ProcSet [ /PDF /Text ] /Font << /F1 124 0 R /F2 123 0 R /F3 120 0 R /F4 125 0 R /F5 128 0 R /F6 129 0 R >> /ExtGState << /GS1 130 0 R >> >> endobj 119 0 obj << /Type /Encoding /Differences [ 0 /G0 9 /G9 10 /G10 13 /G13 127 /G127 128 /G128 ] >> endobj 120 0 obj << /Type /Font /Subtype /Type1 /Name /F3 /BaseFont /Helvetica-Bold >> endobj 121 0 obj << /Length 7251 /Length1 4407 /Length2 2842 /Length3 0 >> stream dup 64 /G64 put dup 17 /G17 put dup 185 /G185 put Hall Effect sensors are used to time the speed of wheels and shafts. This article provides a baseline of information. dup 203 /G203 put dup 185 /G185 put 0000011207 00000 n dup 169 /G169 put dup 28 /G28 put dup 75 /G75 put 0000017011 00000 n dup 151 /G151 put /UnderlineThickness 150 def dup 144 /G144 put dup 113 /G113 put dup 100 /G100 put dup 121 /G121 put dup 74 /G74 put dup 73 /G73 put dup 5 /G5 put dup 23 /G23 put end def dup 70 /G70 put dup 152 /G152 put dup 177 /G177 put dup 81 /G81 put /Weight (Medium) def dup 33 /G33 put 13 dict begin 0000008919 00000 n dup 77 /G77 put dup 164 /G164 put dup 113 /G113 put Consider a simple crystal mounted as in the Fig. dup 13 /G13 put dup 95 /G95 put 0 1 255 {1 index exch /.notdef put} for dup 31 /G31 put dup 62 /G62 put dup 213 /G213 put dup 78 /G78 put dup 160 /G160 put These are used in ultra-high-reliability applications such as keyboards. dup 207 /G207 put dup 173 /G173 put dup 132 /G132 put The paper briefly describes the Hall effect and its application in semiconductor material analysis. dup 152 /G152 put dup 184 /G184 put