Title:
閾値演算回路及びこれを用いたANDゲート回路、自己保持回路及び起動信号発生回路
Document Type and Number:
Japanese Patent JP4141039
Kind Code:
B2
Abstract:
The invention relates to a threshold value operation circuit which can perform an analogue type threshold value operation, and which can generate an AC signal with a stabilized frequency and duty ratio which is not influenced by input signal level or characteristic changes of the circuit elements and the like. A switching device (SWa) is switched by a switching signal (Sg) from an external AC source, to modulate an input signal (Vi) which is the subject of a threshold value operation. A modulation signal (V1) thereof is level detected by a level detection circuit (10) having a previously set threshold value, and if within a range of a predetermined level, an AC output (Vo) is generated from the level detection circuit (10).
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Inventors:
Masayoshi Sakai
Toshito Shirai
Toshito Shirai
Application Number:
JP5180099A
Publication Date:
August 27, 2008
Filing Date:
February 26, 1999
Export Citation:
Assignee:
Nippon Signal Co., Ltd.
International Classes:
H03K19/007; G01R19/165; G06F11/00; H03K5/153
Domestic Patent References:
| JP60068719A | ||||
| JP61242114A | ||||
| JP54007731Y1 | ||||
| JP62163413A |
Foreign References:
| WO1994002992A1 |
Attorney, Agent or Firm:
Tomijio Sasashima