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- Yesterday, 22:39Here you have it. If you have any question about the calculation process, feel free to ask.9 replies | 123 view(s)
- Yesterday, 22:01I have solved your problem by thinking the other way around. I will update the whole process shortly. Until then, some conclusions I have found:...9 replies | 123 view(s)
- Yesterday, 18:47If you have an array of data, you can easily find the coefficients with the mathematics software Maple.2 replies | 145 view(s)
- Yesterday, 18:39Where have you seen that ? You can find an equivalent transfer function with only the dominants poles. Please show the example you are talking...9 replies | 123 view(s)
- 23rd February 2017, 23:02CataM replied to a thread [SOLVED] LTspice AC and transient simulation error in Software Problems, Hints and ReviewsAre you sure that in your pictures 3 and 4 steady state has been reached ? Because the time scales looks like is starting at 0 ns.3 replies | 178 view(s)
- 22nd February 2017, 21:03Variables can only exist in a process, so I will assume it was defined in a process. Wrong assignment to the variable, it should be like this:...1 replies | 120 view(s)
- 22nd February 2017, 20:32You are absolutely right. How did you know that it is pi*Vdc ? What equivalent circuit should I draw in order to get to that ? If choke coils are...5 replies | 320 view(s)
- 21st February 2017, 12:28CataM replied to a thread Can i use CC led supply to connect LED both in series and parallel in Elementary Electronic QuestionsNo difference whatsoever because they are in series. Still the same current will go through and hence same voltage drop for the RRG or GRR case.14 replies | 252 view(s)
- 20th February 2017, 18:39There are no 2 switches closed at the same time. Switches changes position when the voltage across the capacitor (VBA) crosses 0, one switch closes...5 replies | 320 view(s)
- 20th February 2017, 17:10Testbenches are Non synthesizeable code as you well said :-D5 replies | 238 view(s)
- 20th February 2017, 15:15CataM replied to a thread Calculating Resistance/Capacitance values from measured/simulated S-parameters in RF, Microwave, Antennas and OpticsI do not know why it is called 2nd order because its transfer function is not a 2nd order. Below is the transfer function. V1 = input voltage4 replies | 246 view(s)
- 20th February 2017, 14:52CataM replied to a thread How do you make the cirucit operating in weak inversion region? in Analog Integrated Circuit (IC) Design, Layout and FabricationJust asking.. What would be the application of such an oscillator with transistors biased in the weak inversion region ?4 replies | 301 view(s)
- 20th February 2017, 14:46CataM replied to a thread See a vhdl integer variable wave with Questasim in Software Problems, Hints and ReviewsYou can then assign the variable to the signal at the end of the process i.e. just before the whole process is over.6 replies | 164 view(s)
- 19th February 2017, 16:39Maximum switching frequency is determined by its switching times. Switching times (e.g. delay, turn off, turn on etc) are given in a datasheet for a...3 replies | 169 view(s)
- 18th February 2017, 20:54CataM replied to a thread HELP with Wireless power transmission of miniscule harvested energy in Power ElectronicsVery little power.. you may want to think to shield your coils. There is where a FEM simulator comes in. Then coils should be around 1 cm in...2 replies | 242 view(s)
- 18th February 2017, 20:42CataM replied to a thread Do you know roughly what is power factor of SMPS with this VAC and IAC input? in Power ElectronicsPower factor = P/S. Can you do that in LTSpice to your SMPS ? Find out first harmonic of the current. FFT can help you out but I do not know if...13 replies | 254 view(s)
- 18th February 2017, 02:07Sorry for restarting old thread. Yes there is an indication of how many steps. Circuit post #1. Transient can be neglected after 3*time...7 replies | 348 view(s)
- 18th February 2017, 00:29Hello everybody, In DC-DC converters (SMPS) for example, in order to focus on the steady state, we assume the inductor for example has an initial...5 replies | 320 view(s)
- 16th February 2017, 21:590.1 Volts/(0.8-0.1 Amps) at 25º C = 0.143 ohms = dynamic resistance when forward biased, according to its datasheet.1 replies | 233 view(s)
- 15th February 2017, 17:48CataM replied to a thread effective impedance of parallel combination of series RC circuit in Elementary Electronic QuestionsI hope Xc is not representing any capacitor otherwise it would be negative. In the above picture, X2 and X1 are negative values and are -Xc2...8 replies | 277 view(s)
- 15th February 2017, 17:39Periodic signal or whatever signal?20 replies | 692 view(s)
- 5th February 2017, 18:11Yes. In the second half cycle maybe the current reaches 0 before switching as simulation assumes real diodes. Do a simulation assuming IDEAL diodes...7 replies | 348 view(s)
- 5th February 2017, 16:20First find out the Transfer Function of your model. Once you have it, you do not insert a PID because sounds good and everybody talks about it,...9 replies | 332 view(s)
- 5th February 2017, 16:01As freebird pointed out in post #2, you have solved wrongly the ODE in the second half of the cycle. Here is the solution. In this special...7 replies | 348 view(s)
- 31st January 2017, 18:39CataM replied to a thread How to compute the electric field inside a dielectric volume?! in RF, Microwave, Antennas and OpticsIn a dielectric the E field is the same as in the vaccum divided by the dielectric constant εr. Then the problem is just to calculate the electric...2 replies | 281 view(s)
- 31st January 2017, 18:22CataM replied to a thread Determine current and voltage for the given diode circuit in Elementary Electronic QuestionsD2 OFF => current through it = 0. I(D1)=I(10k) + I(D2)=0.93+0=0.93 mA - - - Updated - - - You have a contradiction here. First you say...4 replies | 399 view(s)

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