In the picture above, Oscium`s iMSO-104 oscilloscope is measuring the output waveform of an infrared receiver (IR Rx). The iPad and iMSO are functioning as the oscilloscope for measuring the receiver`s output signal as the relative alignment between transmitter and receiver varies. There are two waveforms captured on the oscilloscope screen. Trace 1, the Reference trace (in grey)
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is the full scale Rx output from a 0 degree, on axis Rx/Tx alignment. The active measurement trace (in green) is being measured as the IR transmitter is rotated off axis with the receiver. You can witness this action in this short video clip complete with audio. Turn up your speakers! The infrared transmitter and receiver are set 12-18 apart from each other on a flat, horizontal surface. When you think about signal strength for wireless devices like cell phones, radios, televisions, and satellites, you think of how the antennas on the receiver and transmitter units are aligned. For this application, however, we don`t have antennas. Instead of parabolic dishes, weird metal shapes etched in a circuit board, or telescoping wands that are mechanical structures obviously functioning as antennas, the infrared receiver and transmitter units rely on a special class of diodes for their antennas. The figure below shows the oscilloscope screen displaying the strongest and weakest signals measured at the receiver`s output without triggering the alarm. When the transmitter is perfectly aligned with the receiver, the output waveform`s peak-to-peak voltage is at its maximum value. I used the oscilloscope`s reference capture function to save the trace and preserve it for display on the screen. As demonstrated in the video clip, I can rotate the transmitter about thirty degrees off axis from the receiver before tripping the receiver`s...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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