The intellectual wireless signal transducer was for major transducer and typical sensor to output signal design, so analyze their own outcoming signals at first. Usually the output of the transducer is 4- 20mA standard electric current signal. And to sensor, there are very many types of its outcoming signal. Seeing that the target that this system design faces, with strong points to professional application, employ less
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non-electric and formal signals, greater voltage signals to be considered. In addition, as to the more common frequency signal, while designing the systematic prototype machine, has not considered either, can join in the reseach of the prototype machine of this goods in process, in order to increase the flexibility of the system. Generalized analysis, the focal point is the weak voltage signal. Where is that signal range of the weak voltage directed against how to confirm system design Generally speaking, the voltage signal of mV grade is considered to be the weak voltage signal, but this concept is very fuzzy, not easy quantitative design. Might as well take thermocouple as examples to analyze here according to applied extensive intensity, representativeness and normal intensity. What thermocouple is produced is voltage Electric potential The signal, belong to tempolabile millivolts of weak signals, Table 1 is commonly used temperature measurement limits and correspondent thermoelectric force ranges of different thermocouple. Can be found out from the table, the output thermoelectric force of thermocouple is basically within the range of 0- 60mV, so, can be thought 0- 60mV to have better representativeness, can cover much application environment, also should be regarded as another a type of signal of sysin. There are two kinds of so systematic forward end input signals: 4- 20mA standard electric current signal and 0- 60mV...
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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