Capacitor sensing technology-based filter circuit
A filter circuit and capacitive sensing technology, applied in the field of filter circuits, can solve the problems of not necessarily good filtering effect and high price.
Inactive Publication Date: 2018-04-24
FUXIN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER +1
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Problems solved by technology
[0004] The signal may be distorted by the environment and interference in every link of its generation, conversion and transmission, and even in quite a few cases, the distortion is so serious that the signal and the information it carries are distorted. It is deeply buried in the noise, so the existing signal generators need to have a filtering device to achieve its filtering effect. When most of these devices are expensive, the filtering effect is not necessarily good
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Embodiment 1
[0024] Such as Figure 1-2 As shown, a filter circuit based on capacitive sensing technology includes a voltage-limiting resistor 1, an amplifier 2, a first filter circuit 3 and a second filter circuit 4, and the filter circuit is fixed with a voltage-limiting resistor 1, an amplifier 2, and a first filter circuit. The filter circuit 3 and the second filter circuit 4, the front end of the filter circuit is fixed with a first filter circuit 3, the rear end of the first filter circuit 3 is fixed with a voltage limiting resistor 1, and the rear end of the voltage limiting resistor 1 is fixed with an amplifier 2, the amplifier 2. A second filter circuit 4 is fixedly installed at the rear end.
[0025] When using the filter of the present invention: connect the filter circuit to the output end of the signal source, the signal wave enters the filter circuit, first enters the first filter circuit 3, and under the filtering action of the first filter circuit 3, part of the clutter wil...
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The invention discloses a capacitor sensing technology-based filter circuit which is a necessary and useful tool in various filter devices. The filter circuit comprises a voltage limiting resistor, anamplifier, a first filter circuit body and a second filter circuit body. The filter circuit is characterized in that the voltage limiting resistor, the amplifier, the first filter circuit body and the second filter circuit body are fixedly arranged in the filter circuit, the most front end of the filter circuit is fixedly provided with the first filter circuit body, the back end of the first filter circuit body is fixedly provided with the voltage limiting resistor, the back end of the voltage limiting resistor is fixedly provided with the amplifier, and the back end of the amplifier is fixedly provided with the second filter circuit body. The novel capacitor sensing technology-based filter circuit is low in cost, novel in design, high in innovativeness, practical, convenient to use, stable and reliable; and the voltage limiting resistor, the amplifier, the first filter circuit body and the second filter circuit body are fixedly arranged in the novel capacitor sensing technology-basedfilter circuit, noise waves can be effectively filtered out, the signal stability is kept, and the design requirements of the filter circuit are met.
Description
technical field [0001] The present invention relates to a filter circuit, in particular to a filter circuit based on capacitive sensing technology. Background technique [0002] In the field of electronic technology, "wave" is narrowly limited to specifically referring to the process of describing the fluctuation of the value of various physical quantities with time. This process is converted into a time function of voltage or current through the action of various sensors, called It is a time waveform of various physical quantities, or called a signal, because the independent variable time is continuously valued, so it is called a continuous time signal, and it is also customarily called an analog signal (Analog Signal). [0003] With the emergence and rapid development of digital electronic computer technology, in order to facilitate the processing of signals by computers, a complete theory and method for transforming continuous time signals into discrete time signals under...
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IPC IPC(8): H03H11/48
CPCH03H11/48
Inventor 陈鑫高之成徐德丁洪刚刘海东任伟王宇鹏
Owner FUXIN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER