专利名称：Circuits for electromagnet energisation
control
发明人：Hill, William Frank申请号：EP80303166.5申请日：19800910公开号：EP0026068B1公开日：19840215
摘要：An electromagnet control circuit includes a first switching transistor (14) whichis connected in series with the electromagnet (10) across a low voltage supply (11, 15). Asecond switching transistor (26) is connected to provide a high voltage supply (27) to theelectromagnet at switch-on. An inductor (28) is connected by transistors (30 and 32) tothe low voltage supply and is supplied with current whilst the first switching transistor(14) is on. At switch-off a diode (29) interconnecting the electromagnet 10 and theinductor (28) allows the inductor current to be diverted through the electromagnet toprovide rapid flux decay in the latter.
申请人：LUCAS INDUSTRIES public limited company
地址：Great King Street Birmingham, B19 2XF West Midlands GB
国籍：GB
代理机构：Evershed, Michael (GB)
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