Hmmm... a PSPICE run indicates I do not have volt*second balance in this case. This makes me think that the overlap in synchronous rectifier on times must occur during the "dead time" of the 1-D state, between the time when the transformer resets and the 1-D state ends.
A flyback converter (like any DC to DC switching converter) will take a DC input and first "chop" it into a square wave, making it an alternating waveform that can then be passed to the secondary of the transformer.
Switching power converter question (FYI, this is a 2-switch forward with synchronous rectifiers on the secondary). Switching at 200kHz.
The transformer stores & transfers energy during the on state (the "D" state), and then must be reset during the off state ("1-D" state).
The primary...
That is a very good point indeed; the bandwidth of any control circuit I add can affect the frequency response converter itself. I could perhaps design a filter to mitigate this, but I really don't want to add extra components if I don't have to.
Unfortunately, there's nothing useful to be...
Hi, all.
(please see the attachment in the next post)
I'm re-using an old power converter in a design, which unfortunately requires a rather large minimum load to properly regulate. I can't alter this converter; I have to use it as-is. But, I can monitor the output, and add circuitry as...
Analog has its advantages, in that digital is becoming so incredibly popular that good analog folks can be hard to find.
For example, we've yet to make the power supply obsolete, and it is still largely analog (yet morphing towards more digital each year). There aren't an incredibly large...
I did a quick Google search - this should answer your symbol questions:
http://www.tpub.com/content/neets/14179/css/14179_158.htm
The source is sometimes connected to ground because grounds are sometimes used as a current return. Also, in a logic circuit, "ground" is the default "0" by...
The soluiton is relatively easy, but understanding the solution may be a bit more challenging. So I'll take the longer route, assuming you'll need to know how to do this again in the future.
Consider this circuit:
Vin-----R1----------Vout
......|
......|
......R2
......|
......|...
OK, going on memory of 1 thermo class 10 years ago...
Heat energy flows in one direction only - from a "hotter" object to a "colder" object.
The colder object must be at a temperature strictly less than the hotter object (cannot be equal) in order for this energy transfer ("cooling" of the...
guess
A complete guess-
The "core" is brought to a voltage much higher than Earth ground. The surface of the glass ball has a relatively evenly distributed lump resistance back to ground. The glass ball is filled with soemething (maybe air, maybe not). The voltage is high enough for that...
time scale
I think rayjohn may be on to somehting there - make sure your time scale is small enough.
For instance, if your circuit has a time constant of 10us and you simulate it for 10s, the response over the full simulation time will likely look like a steady 10V.
What you are trying to do, if I understand correctly, is use a 1V source and a transformer to create a 300V potential across a capacitor.
If you look up the schematic for a boost converter, you may find this to be a viable solution.
If you use a 1:100 transformer to step up the voltage to...
Yeah - I can empirically back that up!
Here in AZ, it can get very dry. I have stepped out of the car and received quite an uncomfortable shock.. plus, sometimes you accidentally brush the car with your calf or other body parts while exiting, so this nasty shock can get you in some very...