Radio frequency modulator for video monitoring device
A radio frequency modulator and video monitoring technology, which is applied to color TV parts, TV system parts, TVs, etc., can solve problems such as unclear video, interference, and unstable video signals, and achieve clear video and high quality video signals. The effect of stability and simple structure
Inactive Publication Date: 2015-04-29
CHENGDU KAIZHI TECH
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Problems solved by technology
Traditional radio frequency modulators used for video monitoring have a complex structure, and the broadcast or transmitted video is not clear, there is interference, and there is also the problem of unstable video signals
Method used
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Embodiment Construction
[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Such as figure 1 As shown, the present invention is a radio frequency modulator for a video monitoring device, including a potentiometer RP, a first capacitor C1 to an eleventh capacitor C11, a first resistor R1 to a tenth resistor R10, a first triode VT1, The second triode VT2, the first inductance coil L1 to the third inductance coil L3 and the radio frequency device RF, the voltage input end of the power supply are respectively connected with the first end of the first resistor R1, the collector of the first triode VT1, the second The first end of the second capacitor C2 is connected to the first end of the seventh resistor R7, and the second end of the first resistor R1 is respectively connected to the base of the first triode VT1, the first end of the first capacitor C1 and the second resistor The first terminal of R2 is connected, the second terminal of the fi...
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The invention discloses a radio frequency modulator for a video monitoring device. The radio frequency modulator comprises a potentiometer, first to eleventh capacitors, first to tenth resistors, a first triode, a second triode, first to third inductance coils and a radio frequency device, wherein a voltage input end of a power supply is connected with a first end of the first resistor, a collector of the first triode, a first end of the second capacitor and a first end of the seventh resistor respectively; a second end of the first resistor is connected with a base of the first triode, a first end of the first capacitor and a first end of the second resistor respectively; a second end of the first capacitor is connected with a first end of the potentiometer and a sliding end of the potentiometer respectively. The radio frequency modulator for the video monitoring device is simple in structure, and videos formed by propagation or transmission of radio frequency signals modulated by the radio frequency modulator are clear, free of interference and stable in signal.
Description
technical field [0001] The invention relates to a radio frequency modulator, in particular to a radio frequency modulator used in a video monitoring device. Background technique [0002] The video monitoring device is equipped with a radio frequency modulator, which is used to make certain parameters of the optical signal or electrical signal, such as amplitude, intensity, frequency or phase, etc., change according to the changing law of another signal. The radio frequency modulator can The video signal is modulated into a radio frequency signal, which is mainly used for rebroadcasting or transmitting surveillance video. Traditional RF modulators used for video monitoring have a complex structure, and the propagated or transmitted video is not clear, there is interference, and there is also the problem of unstable video signals. Contents of the invention [0003] The object of the present invention is to provide a radio frequency modulator for a video monitoring device in...
Claims
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Login to View More IPC IPC(8): H04N5/40H04N7/18
Inventor 郭辉罗彬覃树建
Owner CHENGDU KAIZHI TECH