pcb

What are the difference between impedance board & Non-impedance board？ :confused::confused::confused::confused:

I am a rookie, just started to learn PCB drawing, using Altium Designer 13. I had a problem: I had to drill a hole in my board, just a physical hole, without electrical properties, not the kind of pad. At first, because I didn't understand, so. 1. I drew a circle on the schematic Drill Drawing...

As you can see, the thickness of the power line, blue line and red line on the circular pad is different. Is this feasible? The line to the left of the right square pad and the line above it are also different in thickness. Is this OK? I heard that this situation will reflect under high...

Hello everyone, I'm here with a dilemma regarding a company project. We have a developed software defined radio with 2 separate boards ( one for data, one for power) shielded by a metal case (top, bottom and between boards). We're on a milestone that requires us to develop test procedures for...

Hello all I wanted a basic and good circuit diagram for walkie talkie that can be designed and made into ready use.Have attached image.Thanks all

Hello everyone. We have a especialized PCB here (multipoint control unit, videoconference), and it showed us some alerts of overheating. Opening it up, we found some "carbonized" traces, showed in the pics below. Our doubt is, is it sign of overheating or is it come coating or insulation...

Hi, this is Sergey, I got my new PCBs in hands this Tuesday by ALLPCB on this Tuesday. Here share a review for it. [I don't have any commision or coupons from them, just shared my really purchase experience.] I order on July 5, and it amazing shipped July 6. Finished only 1 day. and shipped...

Hi everyone, I am new to the site and I am looking for more information about PCB prototype designs & variations. Any info would be great! Thanks!

hello experts, i m trying to make an electronic ignition like pamco and got similar design from a friend, i make homemade pcb for this schematic but output is coming without using magnet(added an led to check output and its constant on). can anyone guide me? PCB I m using MLX90217 geartooth...

Hey guys! I am new here, so if this post is in the wrong spot please let me know. I am a recent graduate from Texas A&M and am designing a new item I hope to bring to market, but am in need of some lab equipment to get me started and move onto larger projects. I have put together a spreadsheet...

Myself Katy Radcliff, Training Coordinator at BEST Inc. I love to repair and rework PCB's, so I hope I will get something new related to PCB's and other electronic things.;)

Hello everybody i am new to analog design and i was assigned to do an analog design to sensor interfaces(LVDT , 4-20mA , differential 485) . the problem i am facin g right know is that i don't know exactly from where to start, (for example i don't know if i need a filter or not, and if i need...

I have a PCB made by the electric engineer but we need to make it smaller, maybe stacked? i have seen other GPS simcard designs Stacked, we have no experience designing PCB, maybe you guys can help us make a smaller design keeping all the components. Thanks in advance for any help

Hello, I am currently working on a project where i want to replace the switches in a guitar hero guitar, in my case the world tour one. The current problem is that the stock switches are really bad and wear out easily to the point where they miss strums, so to remedy this i have mechanical...

Hi Team, I know schematic design but the only problem is understanding and interpreting the mechanical drawings of the electronic components. I couldn't find much documentation on the internet to convert the component's drawings into a PCB footprint. There are simple tutorials like land pattern...

So a buddy of mine (Hi Bernard!) on another forum suggested I use a shift register for an idea I had. A little background--I'm pretty fresh out of college and I work with high voltages all day; mainly analog power, PCB Design, soldering, Hi-Pot and UL Certification. Digital Electronics is...

hello I'm a newb here just made the acct to try and find this voltage regulator,, I can find everything but this one.. its marked 01A and theres a 5 sideways after the number ... type is APR3001-15A sot-23 I need this or something that will do the same if anyone can help that's awesome thank..

I collect old vhs, and recently got some cool gimmick ones that light up when you press a button. However, they are almost 30 years old and no longer work. Taking a look at the pcb both were heavily corroded. I scraped off as much green corrosion as I could and replaced batteries but no luck...

Where is the boundary of forum rules, when asking questions regarding recreating/altering a circuit from an electronic product that somebody never designed. Is it ok to get advice or assistance in relation as long as not posting full schematics or routing. Google search of legalities of pcb...

Hi, how would one produce this custom pad shape, in eagle pcb designer. All I could find was a video of simple, 90deg polygon shapes. The design is a cutout on pcb edge for a switch, the area needs to be filled. any solutions. thanks

Hello Is this fuse of some sort? or just an empty space for installing pcb based fuse socket? **broken link removed** **broken link removed** This is the circuit board of my new cheap dmm, my last one broke when i mistakenly inserted the leads in mains while the red lead was in 10A socket. I...

I'm feeling very, very pleased with myself! I got some blue dry film photo-resist off eBay, and also a tube of green liquid solder resist. Today I got round to trying them out. The dry film took a few go's before I got it right - applied it with a rubber covered roller that came from an old...

i'm new to pcb design and i'm wondering that starting from which frequency range we need to apply the high speed PCB design rules and techniques ?

First of all let me tell you that I have next to zero knowledge about electronics. I am a newly retired accounting/finance man and I am trying to make something electronic so I really need your help with these question to begin with: I just purchased a home-made strobo light device that uses a...