519 Threads found on edaboard.com: Right The First
Hi guys. I am simulating a CPW with an extra SiO2 layer.
the 2 wave ports are set to touch the two opposite surfaces of the trace.
I first looked my s11 parameter, it's below -20dB, which seems all right.
However, when I checked the z11 plot and found the real part is not (...)
Electromagnetic Design and Simulation :: 03-18-2017 08:39 :: zz14839 :: Replies: 2 :: Views: 663
add SSPCON1=0; in the beginning of the while loop also.
Did you remove SSPCON1 from the main code ?
Sorry, but your suggestions are completely wrong. SSPCON1 will be written once during initialization and usually not touched any more in SPI operation. Review PIC18 datasheet!
the post #1 code looks (...)
Microcontrollers :: 03-17-2017 07:29 :: FvM :: Replies: 16 :: Views: 862
the assumed first order gain characteristic isn't bad as an estimation. there's an additional cascode stage pole, but you can probably ignore it.
the other expressions are however only right if C2 >> Cf, otherwise the amplifier output impedance matters. (...)
Analog Circuit Design :: 03-01-2017 19:09 :: FvM :: Replies: 50 :: Views: 2381
I've downloaded a project with a testbench where LINE type is used.
I read variable line_in : line then if(line_in(1)='.') then... I don't understand this handling very well. the line_in object is a pointer to a characters string, right? then line_in(1) means the first (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 02-21-2017 11:18 :: Binome :: Replies: 2 :: Views: 312
first re-define what Z12 is in your mind ...You'll find the right answer.
RF, Microwave, Antennas and Optics :: 01-20-2017 17:59 :: BigBoss :: Replies: 4 :: Views: 615
first you want to know what the short circuit current
really is. It must be above the 400mA and may well
be above 1.6A depending on the design values. the
duty factor looks to be minuscule and if you are on
the right side of Abs Max ratings, should not impact
Analog Circuit Design :: 01-16-2017 17:15 :: dick_freebird :: Replies: 3 :: Views: 645
You shouldn't expect others to do your homework, but help is surely available.
first step would be a clear specification. You can design a divider to give fractional result bits (bits right of the decimal point), however this has nothing to do with floating point number representation. Floating point involves an exponent, (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 01-02-2017 08:57 :: FvM :: Replies: 1 :: Views: 751
first the element should be right-hand or left-hand circular polarization. then design the feeding network for the array. You could follow the example in the antenna books or papers.
RF, Microwave, Antennas and Optics :: 12-12-2016 02:29 :: joshuacp :: Replies: 4 :: Views: 702
I design a floating point multiplication. After multiplying the mantissa of multiplicand and multiplier is the normalize step. I need to detect the first bit 1 from left to right of a 48-bit series.
01 01010110000000000000000 0000000000000000000000
from left to right, i (...)
ASIC Design Methodologies and Tools (Digital) :: 12-05-2016 13:12 :: Nhan95 :: Replies: 1 :: Views: 484
How do you expect someone to help you fix the problem if you have not posted any code, or even reported precisely what is or is not working ? If you on the other hand are requesting a ready-to-use code, this is not the right way. You should first try to turn ON at least one of (...)
Microcontrollers :: 11-13-2016 20:58 :: andre_teprom :: Replies: 11 :: Views: 1146
I think that your more likely to get one if you identify which one.
Vertical, right angle, male, female, make & model ????
ISTR that they are not all exactly the same, one manufacturers does not always fit anothers.
PCB Routing Schematic Layout software and Simulation :: 11-09-2016 13:52 :: Mattylad :: Replies: 4 :: Views: 834
It seems that there is normal I2S, left justified I2S and right justified I2S. the left and right justified make sense. However, the normal I2S has something peculiar about it.
Once the LRCK changes polarity, the value of SDATA on the (...)
Microcontrollers :: 10-20-2016 09:00 :: matrixofdynamism :: Replies: 0 :: Views: 390
Oops, sorry! You're right!
And sorry for the original poster for wrong info!
Microcontrollers :: 10-19-2016 03:07 :: doraemon :: Replies: 17 :: Views: 899
A PI error amplifier would be my first guess.
You didn't tell about the phase shifter range. Generally, an additional comparator for positive or negative phase difference and phase reversal switch are required to push the phase difference to the right part of the detector curve.
RF, Microwave, Antennas and Optics :: 10-04-2016 09:03 :: FvM :: Replies: 3 :: Views: 402
the left top picture is a step response of a simple first order (analog) lowpass filter. Like an RC filter
the left bottom is an impulse response of the same filter.
the right picture is a (theoretical) impulse response of an sinc filter. Sin(x) / x response. (...)
Analog Circuit Design :: 08-08-2016 22:38 :: KlausST :: Replies: 1 :: Views: 1082
Hello, i'm a new in design antennas, and having some problems in repeating experiments. I dont now how correctly feed double slot antenna. 129544. the arrow indicates the attachment detector. I calculated the two cases, and the first is right for me, but it does not work. But second is (...)
RF, Microwave, Antennas and Optics :: 06-04-2016 20:03 :: bikrader :: Replies: 0 :: Views: 684
first, check that the op amp output is trying to do the
right thing. Startup is a potential issue, so is swapping
phase on the feedback.
Next check that for any decent gate drive, the PMOS
current sources are capable of pushing the needed
current onto the (...)
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 05-10-2016 18:02 :: dick_freebird :: Replies: 1 :: Views: 465
A servo is really the answer. It is able to move quickly or slowly. Action is firm, with no loose play. It can be sturdy enough to move the head (perhaps needing to be counterbalanced), and hold position. It always knows its center position automatically, and goes there when you send 1.5 mSec pulses.
Other than a servo, (...)
Power Electronics :: 04-09-2016 01:37 :: BradtheRad :: Replies: 15 :: Views: 1181
based on wireless technology
Does it have to work by radio frequency? Or can it be by light transmission? Or ultrasonic?
Do you want to make a homebrew radio system? It involves effort and knowledge. As a first project it will be difficult to make it work right. Both transmitter and receive need to be adjusted to the same frequenc
Microcontrollers :: 03-29-2016 04:23 :: BradtheRad :: Replies: 2 :: Views: 561
IF YOU HAVE USED A DIFFEENT DEVICE OF OPP. POLARITY , theN INVERTED the SIGNAL , theN the DELAY WILL BE TOO MUCH, -THOSE LINEAR CHIPS ONLY HAVE SMALL DELAYS (SORRY ABout capitals) ...you should use the circuit they prescribe. I would go on their free ltspice sim (...)
Power Electronics :: 03-11-2016 19:39 :: treez :: Replies: 3 :: Views: 494