Title:
WAVEFORM GENERATION CIRCUIT
Document Type and Number:
Japanese Patent JP2010233067
Kind Code:
A
Abstract:
To reduce noise generated from a waveform generation circuit.
A waveform generation circuit is configured to continuously control a voltage applied to a gate of an MOSFET to change an output current in the form of a sinusoidal wave by utilizing, as electrical characteristics specific to the MOSFET 11, a characteristic between a voltage applied to a gate of the MOSFET 11 and the output current. By this arrangement, a continuous sinusoidal wave (output current) can be generated. The waveform of the sinusoidal wave generated by the sinusoidal waveform generation circuit is not a combination of a plurality of linear lines but is continuous and smooth. As a result, noise generated by the sinusoidal waveform generation circuit can be reduced.
Inventors:
KAWAI RYOJI
OGURA HIROSHI
HARADA YUKINORI
OGURA HIROSHI
HARADA YUKINORI
Application Number:
JP2009079803A
Publication Date:
October 14, 2010
Filing Date:
March 27, 2009
Export Citation:
Assignee:
DENSO CORP
International Classes:
H03K4/92; H03K9/00
Domestic Patent References:
| JPH02235427A | 1990-09-18 | |||
| JPH04229713A | 1992-08-19 | |||
| JPH09261016A | 1997-10-03 | |||
| JPS61237513A | 1986-10-22 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation
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