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Hi, I want to measure the pole voltages for three phases of inverter b6 bridge. Can anyone tell me shortly how to measure the pole voltage of R phase using differential probe connection to oscilloscope to see square waveform (switchings) of R phase? in this case do i need two differential probes? since we have two gates i.e., one pole has two
Easiest way to a quadrature oscillator is 4 stages of fully differential gain, with three of them cross-connected (so as to be inverting) and one straight (noninverting). But you need to think about what you want besides 5GHz small signal oscillation. Presumably these quadrature clocks have a purpose and that purpose wants "stuff" - like drive
In case you're talking about ring oscillators, one stage (assuming differential in and out) is never enough, because you won't accumulate enough phase around the loop to make it oscillate. This could be even problematic with two stages in the ring (again, assuming fully differential stages). three and more should be ok to make the oscillator oscill
dear friends, I am matching five transistors using this matching array ABCD E DCBA Where E is the half size of other transistors. All transistors share the same gate but all they have different drain and source connections. Kindly you see how the layout becoming large and consuming wiring. Do you think it is not practical to match fi
Thanks, i presume its just a three phase rectifier that converts the three phase to DC?...and not three separate Boost PFCs (each having its own bridge rectifier) , one boost PFC on each on each phase?
Hi, I'm designing a patch antenna for GPS application in HFSS software. all the dimensions of the patch are as per calculations. I have three frequencies resonating at the required frequencies. However, the axial ratio vs frequency plot does not satisfy the RHCP condition (<3dB). I was able to achieve a -3dB axial ratio for the lower band but not f
Lets say I have 2 quartz crystals, one has 20ppm frequency tolerance specified in the datasheet and the other 50ppm. It is not meant that way. Say you have a crystal with a X MHz printed on it. In actual operation, it may be X+/- y with a 99% probability. The y is the commonly meant tolerance. In a datasheet you may find three val
We can evaluate frequency characteristics of z-domain transfer function, H(z) by using Verilog-A in Cadence Spectre. Assume H(z) = (1-z^-1)^3 = 1 -3*z^-1 +3*z^-2 -1*z^-3 Here we have three options as expression in Verilog-A. (1) zi_nd(V(Input), {1, -3, 3, -1}, {1}, Tsample); (2) zi_zp(V(Input), {1,0, 1,0, 1,0}, {0,0}, Tsample); (3) zi_zd(V
hi everybody: I need to design a qvco which works at 25Ghz,and i use the IBM 0.13um Bicmos technology,but something wrong happened when I simulated.There are three questions. first.when I simulated the vco using S-qvco and P-qvco architecture, but I canĀ?t simulate S-qvco better than P-qvco, I can only simulate S-qvco for -93dBc@1Mᦁ
Hi, I'm trying to design a right hand circularly polarized tri-band patch antenna on a ceramic substrate. however, i'm not able to achieve rhcp for all three frequencies. i tried truncating the corner of the patch antenna. axial ratio is less than 3db only for one band at a time. kindly help. thank you in advance.
Theoretical value, actual measurement, simulation value of inductance I'd like to compare three in total. The theoretical values and actual measurements are similar, but only the cst simulation values are different and I don't know what went wrong. diameter of inductor is 3.47mm length is 74mm Ports were implemented by calculating them w
Hello, everyone. I am a student in computer development and I am really interested in the Internet of Things. I have made three IOT projects and now I am thinking about my professional future. The problem is that in my country in Morocco working in IOT is not quite clear and really rare in terms of needs but in IT development it is very much in dem
You mean "who can design a three input XOR gate with fewest components" kind of competition? Well, if you want to sponsor it and judge it, I'm sure WTWH Media would be interested. As far as "spot the mistake" goes, we spend much of our time warning people about mistakes on other web sites already! Brian.
It's not impossible to use IR2110 for this circuit. But you need to understand the requirements of IR2110 high side driver operation. First point is that Vs must periodically swing down to COM potential, but not much below. This is usually achieved in a half bridge where Vs is connected to the high side source and COM to the low side source node
Hi, I am using ST2378 level shifter to read the data from 5V operated LCD from a MCU operating at 3.3V I am able to wright the data on LCD but not able to read the data from LCD. I tried three LCD from different make (manufacturer). out of that 1 LCD data I can read but two LCD data I am not able to read. As voltage shifter is bidirectional O
Never random - what good would that do? It means there are three or more bytes: Byte 1: is the device ID according to the I2C spec, it selects the device in case there are other I2C devices on the same bus. Byte 2: having selected the device with byte 1, this selects which register inside that device the following data is to go to. Byte 3 and onwa
Hello everyone, I realize the title is not so clear. Let me explain better my question. I have designed a radio-frequency receiver using different single components (LNAs, mixer, PLLs, filters, etc). I put together the components, defined the architecture and simulated the system. Each components has about 3 mm x mm size. Instead of followi
Hey Guys, I'm trying to Implement a program to multiply two matrices(8 bit)( 5x5 ) and I'm stuck trying to complete this code. It would be awesome if you guys could help me on this. The code is Posted Below: module matrixmult(A,B,C); inputA; inputB; outputC; integer i; integer j; integer k; reg A01 [0
Hi, char hexaDeciNum .. means you have an array of three chars. Tell us how you want to combine them to a single char. Klaus
You need to change the inductance ratio - essentially a higher Q for a given load - so that 200kHz will give you the lower o/p - this is by far the easiest way to go ... Yes , I already extremely lowered the inductance ratio. I placed a very big air gap on all three legs simultaneously. (each 1.8mm).