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Hi,
I'm building a voltage feedback flyback converter to turn a 12v input into a 24v output at 1Amp. I've successfully simulated and built this circuit on breadboard without isolation. Now I'm adding isolation. A tranformer in the forward path and an opto-coupler in the feedback path, but I'm...
SMPS
How much do you need to vary the output? If you're using a PWM control chip, then the duty cycle (which determines your output voltage) is set by a RC network. Instead of a fixed R in the network, you can put a potentiometer. Changing the pot value will then change the duty cycle and thus...
Your input voltage varies wildly, so you'll need a good control solution. I suggest having a look at UCC38C4x series of controllers from TI. Seach their website for that part and read the application note. It should get you started.
HTH
-Igs
Boost Converter Design
Texas Instruments has very good documentation. I suggest searching the TI website for "understanding boost power stages in switch mode power supplies" which explains how boost converters work and how to design them. There are also lots of application notes and reference...
ltspice models
Hello fellow engineers!
I'm in need to simulate a circuit using specific components. I have found the component I need (STP16NF06 Mosfet) PSPICE .lib model on the ST microelectronics website. However, I can't figure out how to import it for use in LTspice. The oracle (google)...
Ok, turns out it was messing up because I defined one of the constants incorrectly. All fixed now. Posting the code, and problem description in the attachment if anyone ever needs it.
The code will generate a file of x-y values suitable for plotting in something like Gnuplot.
Cheers!
Ok, I've got that problem of instability sorted out now. It turned out I forgot a bracket in one of the iteration equations.
However, with that fixed, I still have a problem. The EM wave is moving too "slow". I've seen the solution to this problem, and after 50 time steps the wave should be...
Hi everyone,
I've read about the FDTD quite a bit, both through resources I found on this board and in the local library. I have implemented a 1D FDTD algorithm in C, with a Gaussian pulse as the excitation. The code is posted below. If on line 97 i set currentTime == 0, I get the initial...
Hello everyone!
For part of a university project I'm currently working on, I need to calculate the Ey and Hz field components of a TEM wave propagating in X direction through free air, a dielectric medium, and free air again. I know the finite-difference equations to be used for iteration, and...
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