发明名称 |
CHOPPING DRIVE CIRCUIT FOR AN ELECTROMAGNETIC PRINT HAMMER OR THE LIKE |
摘要 |
A constant energy drive circuit for an electromagnetic print hammer has a chopping circuit including a comparator which cycles a switch connecting the energizing coil of the print hammer to an unregulated power supply. Changes in the drive voltage of the unregulated source are compensated for by altering the switching rate of the switch by adjusting the amplitude of a reference signal applied to the comparator. The reference signal adjustment is inverse to changes in the drive voltage. |
申请公布号 |
DE3272430(D1) |
申请公布日期 |
1986.09.11 |
申请号 |
DE19823272430 |
申请日期 |
1982.04.15 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ARNOLD, ROBERT WALKER |
分类号 |
B41J9/44;B41J9/50;G05F1/10;H01F7/18;H01H47/32;(IPC1-7):H03K17/64;B41J9/38 |
主分类号 |
B41J9/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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