Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1997-02-07
1997-10-14
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 89, 327143, 327437, H03K 5153
Patent
active
056776438
ABSTRACT:
A potential detecting circuit comprises a MOSFET, a constant current circuit, a reference potential generating circuit and a comparing circuit. A power supply potential is applied to a drain of the MOSFET and a subject potential to be detected is applied to the gate of the MOSFET. The constant current circuit is connected to a source of the MOSFET. The comparing circuit compares a reference potential output from the reference potential generating circuit with a source potential of the MOSFET. A detection output is obtained on the basis of the comparison result. The source potential of the MOSFET is increased in accordance with an increase of the subject potential. When the source potential coincides with the reference potential output from the reference potential generating circuit, the level of the source potential is detected as a detection level.
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Cunningham Terry
Kabushiki Kaisha Toshiba
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