发明名称 |
Current limiting circuit for reactive load, e.g. in IC engine ignition control - adjusts maximum load current using controllable voltage divider with switching signal generated from microprocessor depending on system parameters |
摘要 |
The circuit limits the load current (IL) flowing in a load current circuit using a microprocessor. The load current circuit includes a reactive load (ZL), a controllable switch (T1) and a shunt resistance (R5) and is supplied from a voltage source (UBatt). The circuit includes two comparator circuits (K1, K2) whose outputs form a current node which is connected to the control input of the switch. The maximum permissible load current can be adjusted by use of a controlled voltage divider. The corresponding switching signal is generated from the microprocessor depending on system parameters, e.g. temp. ADVANTAGE - Permits switching of maximum permissible load current using simple structure.
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申请公布号 |
DE4231037(A1) |
申请公布日期 |
1994.03.24 |
申请号 |
DE19924231037 |
申请日期 |
1992.09.17 |
申请人 |
TEMIC TELEFUNKEN MICROELECTRONIC GMBH, 74072 HEILBRONN, DE |
发明人 |
RODENHEBER, RAINER, 7100 HEILBRONN, DE;NIEMETZ, LIENHARD, 8540 REDNITZHEMBACH, DE |
分类号 |
F02P3/05;H03K17/082;H03K17/64;(IPC1-7):H02H9/02;H03K17/08 |
主分类号 |
F02P3/05 |
代理机构 |
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