Patent attributes
A radio wave detection device including an electric wave receiving/amplifying circuit, a rectifying circuit, a peak-to-peak amplifier, a central processor, a power supply, a reference resistance circuit and a sound/light output unit. The electric wave receiving/amplifying circuit includes an antenna for receiving radio signal in the environment. The radio wave with a specific frequency filters through a wave filter and then is amplified. The rectifying circuit converts the radio signal into analog level voltage which is output to the central processor and peak-to-peak amplifier. In a preset condition, the peak-to-peak amplifier converts the level voltage into a controlling signal which is output to the central processor. The central processor also receives various comparison level voltages generated by the reference resistance circuit and compares the reference level voltage with the level voltage (and the controlling signal). Thereafter, the intensity of the detected radio signal is shown by the sound/light output unit by way of light and sound.
