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As shown in the bellowing figure, when can set different Vgs conditions, and then sweep Vds to get Ids_Vds curves with various Vgs. Then extending those curves and crossing at Va point, then we know the value of Va, then lamda=1/Va. 134969 In real life, the curves are not so "straight", so how can we know which location
With the snubber of 1nF/250V(shown by multimeter) and 1.5Kohm is not allowing the PIC to control the motor Your schematic is showing a different circuit. Anyway, which behavior do you exactly observe? 1 nF is about no snubber. Think about capacitors in a 47nF to 220 nF range. As an additional point, the crossing detector in yo
Hello all, Can anybody tell me how a freq command works in cadence spectre? I know it takes the reciprocal of the average time between two successive mid point crossing of the rising waveform. Does anybody know in what time frame it takes an average?
you need to plot the input impedance of the antenna which is, in the case of single port network, Z11. The real part should be around 50 and the imaginary part should be crossing zero at that point. An alternative way is to plot S11 and the antenna is considered to be matched when S11<=-10dB.
Round trip delay is a valid point. It's also no always so that you have a sufficient fast oversampling clock available. Alternatively, you may want to run the shift register from SPI SCK ("SCLK") and implement domain crossing logic for the parallel data.
From the MOC3021datasheet, that resistor should be around 180 ohms. You could check the datasheet for further circuit design tips. What's the pulse duration from your Arduino? I hope it doesn't pass the next zero crossing point.
I don't think you can increase the accuracy starting from a printed graph. However the log scale is simply a representation of the curves so you don't have to perform any kind of transformation. You can take from the graphs the point at the crossing of vertical and horizontals grid lines, put it into excel and print a linear graph.
Did you heard about zero crossing detectors(ZCD)? That is the solution.
The positive net from V1 is not properly connected to R2, but it is crossing it.
Assume that positive-going zero-crossing pulse is polled by RA0 of PIC 16F676. What will be the code in C compiled by mikroC ? # define zero_pulse PORTA, 0; BTFSC zero_pulse; Goto $-1; BTFSS zero_pulse; Goto $-1 ; ????. ; Rest of code sbit zero_pulse at PORTA.B0
The question is what you exactly want to achieve with the zero crossing information. Due to waveform distortions, the zero crossing of the instantaneous voltage isn't identical with the zero of the fundamental wave. To determine the instantaneous zero more eaxctly, you'll interpolate between near zero samples with a straight line. To extract the fu
Hi All, As far as I know, false paths should be applied between clock domains. What about min/max constraints on the clock domain crossing logic? Can they replace the false paths constraints? How? Thank you!
Hi plz anybody can help me as want to know the slew time for ddr2 signal is measured with which reference as from VINHAC to VINLDC for Falling and VINLAC to VINHDC FOR Rising or from the vref crossing point to VINHAC for rising and Vref to VINLAC for falling edge.
It's a regulated power supply with a voltage zero crossing detector. The zero point won't be very well defined in this circuit but it will occur once per half cycle. As it stands there is no output waveform, to make it work you will need an additional resitor from the "to mcu" connection to the MCUs supply line (probably the +5V from the regulator)
you measure the DC offset to the zero crossing points of the sine wave cycle the zero crossing point of the AC sinewave is sitting at 6V on your CRO. When measuring AC ripple on a power supply is the measurement from the Oscilloscope's zero Origin zero volts to the negative peak of the AC sinewave or to the zero (...)
i wanna ask about the availability of current transformer and voltage transformer in the market as i need it in low voltage assembly i.e 25 volts ac. actually i need to make power factor meter which require a current transformer and a voltage transformer, each of which gives waveform out of which zero crossing point will be extracted using op-amp a
As I keep saying, and Jeffrey confirms, the resistance and power rating of the heater has nothing to do with the thermstat not operating. The thermostat is simply an on/off switch that is operated by the temprature crossing the trip point. Below the trip point the thermostat switch will be closed and almost a short circuit (zero Ohms), (...)
You will be unable to change the origin and the components not move, they will move relative to their origin. However, for those components that do need the origin moving, if you can place a temporary feature like a figure/line - perhaps crossing the pads to make a centre point then when the component moves you have something to snap back to when
Since Zero crossings are bidirectional with no hysteresis, unless specified. You only need to mask the "sign bit" to look at data for zero crossings. - Initialize counter. - Initialize data - For N = 1 to 500 points - Initial data point = your Bias (or DC) slicer level reference of data for "zero (...)
You can plot Id vs. Vds and extrapolate to the crossing point with the horizontal axis. But this is a lost battle - for sub-100nm technologies, ro varies all-over the place. You'll most probably get different lambda values for different Vgs. Not to mention that if well modeled, the ro will vary also with the Vds.