# Tag Info

5

Well, rather than a plug in, you can use an external graphics package and create the PCB outline there. I use Inkscape, export the image via a .dxf file and then import as a graphic. Others might use Adobe Illustrator, and there are even more others than can export .dxf. Obviously AutoCad/SolidWorks and their derivatives/competitors. So do this:- To ...

3

IPC rules don't really depend on the PCB manufacturing process. They're mainly about the PCB assembly process. The recommended pad sizes ensure there's enough solder paste to hold the component in place. The toe-room ensures a good solder fillet can be formed. Overall they provide very generous allowance for placement tolerance. The courtyard mainly makes ...

2

A 555 timer with a few blinking diodes or other shenanigans will easily make a circuit with 20 components, and lots of things there to analyze. There are literally thousands of YouTube video's, tutorials and resources to assist in your understanding of the circuit. Your school probably has all the required components as well. Autoroute is a supplementary ...

2

They can have same printed specs but they are different - not the same friction, not as strong magnets, different windings or something else. The brushes also can have different placements. If they run as unloaded generators differently when both have the same r.p.m the motors are different, no matter what's printed on them or papers.

1

An accepted formula for calculating the power needed by a receiver operating at a specific data rate is this: - Power (dBm) = -154 dBm + 10$log_{10}(\text{data rate})$ Formula from this excellent book by Chistopher Haslett: - The module in question has a data rate throughput as high as 300 kbps so, in that case the receiver input power needed would be: - ...

1

Indeed you are missing cable loss, but that's going to be a few dB at most, not anywhere near 79 dB. What you are missing is noise. The receiver sensitivity is the weakest signal that can be received with zero external noise. But unless you have a cryogenic LNA and a highly directive antenna pointed at something very cold, it's going to be external noise, ...

1

One circuit you could make is a discrete reimplementation of a TTL LSI function like a gate (or a couple of them). Two 2-input AND LSTTL gates will go over this 20 component requirement. It should work on the first try, but probably won’t be quite as fast as the chip would be, since I suggest not to use the fastest transistors you can buy without having an ...

1

If you web-search 'simple circuit' and look at images you will find a wide range of potential examples. Start with eg Simple circuits google search. Ideas Ideas here but less useful "everyday". Bonus - I decided to try to locate the origin of the circuit below. I found that sadly the originator, Tony van Roon died in 2011, but he has left a ...

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The SPST model should only have two pins as can also be seen in the datasheet, although it is not clearly labeled. Removing either pin 1 or 3 should work, since the pin spacing is equal.

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If you look at the LM5085 data sheet, Vin is on pin 8, the corner pin. So it has only one adjacent pin, which is Vcc pin (pin 7). This is normally at 7.5V below Vin which is 68V for 75V in. The remaining two pins on that side are Pgate and Isens. Psens does between Vin and Vcc, and Isens is normally connected to a sens resistor on the external FET. So it ...

1

I have just received my tiny boards and they work fine: The PCB company I use have a minimum castellations drill size of 0.6mm but my vias were smaller than that so I have only asked them to cut vias in the middle. It works fine for me.

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