Description
UFC760BE43 3BHE004573R1043 Voltage regulation control module
UFC760BE43 3BHE004573R1043 Voltage regulation control module
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UFC760BE43 3BHE004573R1043 Voltage regulation control moduleSuitable for steel manufacturing, thermal power generation, hydroelectric power generation, nuclear power generation, wind power generation, gas supply, and other glass manufacturing, paper mills, mechanical manufacturing, electronic manufacturing, automotive manufacturing, aviation manufacturing, chemical manufacturing, coal mining and selection, oil and natural gas mining and selection, metal mining and selection, and non-metallic mining and selection
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The four-wire touch screen does not consider the parasitic resistance of the electrode tap leads and the
circuit that drives the electrode. This resistance is not included in the ITO resistance, and the resistance fluctuates
due to the influence of ambient temperature, which is likely to affect the accuracy of the calculation. Therefore, eight Wire resistive touch screen concept.
The advantage of the four-wire/eight-wire resistive touch screen is that it can not only calculate the horizontal X and Y
coordinates, but also measure
the longitudinal Z coordinate, that is, the pressure of the finger, through a series of methods. This is obtained by
measuring the longitudinal contact resistance Rtouch. Because when contact occurs, the contact resistance is
inversely proportional to the pressure. The greater the pressure, the smaller the contact resistance. The measured value
of this resistance can be used to quantify the contact pressure.
The disadvantage of the four-wire/eight-wire resistive touch screen is that it is not durable enough. Long-term touch and
pressure will cause damage to the device. Because the upper PET and ITO will deform every time it is
touched, and the ITO material is brittle and easily damaged when deformation occurs frequently. Once the ITO layer breaks,
the uniformity of conduction is destroyed, and the proportional equivalence when deriving the coordinates above no longer exists.
This kind of breakage is very likely to occur when frequent
The area that was touched, such as the location of the “Confirm” key. Another disadvantage is that the ITO attached to the PET
movable substrate will not be fully oxidized. Once exposed to moisture or heat, oxidation will cause the resistance to rise, which
will also destroy the conductive uniformity and cause errors in coordinate calculations, that is, “drift” Phenomenon. This gave rise
to the concept of five-wire resistive screens. Short Message Service Center
3. Five-wire resistive touch screen
In view of the shortcomings of the four-wire resistive touch screen, the structure of the five-wire resistive touch screen is that the X
and Y electrodes are made on the ITO layer attached to the glass substrate, and the upper ITO only serves as the active electrode.
The X and Y electrodes of the bottom ITO lead out UL, UR, LL, and LR from the four corners, plus the upper movable electrode, so there are five lines in total.
The advantage is that the glass substrate is relatively strong and not easily deformed, and can fully oxidize the ITO attached to it.
The glass material does not absorb water, and its expansion coefficient is very close to that of ITO, so the resulting deformation will
not cause damage to ITO. The upper ITO is only used as the lead-out electrode, and no current flows, so uniform conductivity is not
required. Even if it is damaged due to deformation, the resistive screen will not “drift”.
The electrodes of the five-wire resistive touch screen cannot be led from the four sides by conductive strips like the four-wire resistive
screen, which will cause a short circuit. The electrodes are dispersed into many resistive patterns distributed around the touch screen
and then drawn out from the four corners. The function of these patterns is to make the voltage gradient in the X
and Y directions of the touch screen linear, which facilitates the measurement of coordinates.
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4. Six-wire resistive touch screen
Toshiba”s withdrawal from the notebook business is based on the five-wire resistive touch screen. The six-wire resistive touch screen adds
a grounded conductive layer on the back of the glass substrate to isolate signal crosstalk from the back of the glass substrate.
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5. Seven-wire resistive touch screen
Like the four-wire resistive touch screen, the five-wire resistive touch screen does not consider the parasitic resistance of the electrode tap lead
and the circuit that drives the electrode. This part of the resistance is not included in the ITO resistance and is likely to affect the accuracy of the
calculation. Therefore, seven The wire resistive touch screen is based on the five-wire resistive touch screen. A wire is drawn from both ends of
UL and LR to sense the actual touch screen terminal voltage, which are recorded as Vmax and Vmin respectively. The working principle is the same as the five-wire resistive touch screen.
Contact: Mr. Lai
Wechat:17750010683
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1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
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Main products:
PLC, DCS, CPU module, communication module, input/output module (AI/AO/DI/DO), power module, silicon controlled module, terminal module, PXI module, servo drive, servo motor, industrial display screen, industrial keyboard, controller, encoder, regulator, sensor, I/O board, counting board, optical fiber interface board, acquisition card, gas turbine card, FIM card and other automatic spare parts
