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Hi guys, I recently started in Altium and am trying to make a symbol/footprint for the following part:
AOZ2261
http://www.aosmd.com/res/data_sheets/AOZ2261QI-15.pdf
As you can see in the datasheet, the high-current pins are mapped to multiple pads on the footprint. I am trying to figure out how...
I did some more investigating, and as FvM said above, it seems like many of the online calculators use a flawed equation. Specifically, they model the distance between layers as:
heffective = \[\frac{h1+h2 }{2}\]
So essentially they are just taking the average distance between layers and then...
I'm confused because I expected the impedance to decrease, not increase. By sandwiching the trace between GND planes, the capacitance per unit length has increased, which should make the impedance go down. I expected the impedance to drop from 50 ohms to 35-40 ohms or something like that.
If...
Hey guys, I just took a look at some asymmetric stripline calculators and I have some serious reservations about the results I'm getting...
For an ordinary microstrip:
Trace Width = 8 mil
Substrate Height = 0.12 mm
Er = 4.4
----> 50 ohms
For an asymmetric stripline:
Trace Width = 8 mil...
Yes, I've seen many of those chips at this point. However, I'm trying to build this transmitter without using a microcontroller (all the integrated PLL/VCOs seem to have digital settings). In other words, I'm trying to design it so you can just solder the parts to a pcb and turn it on. The...
OK, I just took a look at how PLLs work, and I'm a bit confused…
My understanding is that a PLL takes two oscillators, 1 and 2, and then compares the phase. As 1 goes faster than 2, the PLL generates a linearly increasing voltage output (after low passing). This all makes sense.
What I don't...
I'm using it for a physics demonstration in an E&M class, so I'm not too worried about spurious emissions. If I WAS worried, what would be a good way to remove harmonics? Some kind of bandpass or lowpass filter? Forgive me if this is an obvious question, this is my first time working with RF...
Hi, I am trying to design a simple 2.4GHz OOK transmitter, where the on-off rate is only about 1kHz.
My idea was to use the MAX2750 voltage controlled oscillator. It has a shutdown pin, so I figured I could just toggle that to provide the modulation. Interestingly, it states that it is output...
Uh... I'm not sure how to calculate the optimal windings, gauge and the core size. I guess that's probably what I'm looking for? I can change the core if I need to.
I would try and use some program to calculate it, but I don't really feel comfortable doing that when I don't understand it very...
OK, so I am trying to make a transformer for use with USA wall current, i.e. 60Hz AC power. It's intended as an isolating transformer (1:1 ratio), and the secondary side is center tapped. So basically it takes the primary voltage and splits it into two oppositely oscillating sides.
You can see...
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