Electronics-Lab.com Community

# defaced

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1. ## Is this a ceramic cap?

Thank you very much.
2. ## Is this a ceramic cap?

This kind of cap is used for decoupling MCUs. I'm pretty sure it's a ceramic cap, but I'm not positive. Have I IDed this correctly?
3. ## Learning about Tube circuits

This is something I've wanted to do for a long time, but it appears I was born about 40 years too late to really be in the thick of things. Are there any good literature sources from that era that are a text book of sorts for tube electronics? I've got access to a huge (Ohio State's) science and engineering library, bit I don't know what to look for to make use of the facilities available to me.
4. ## For fun - What is your degree?

Welding Engineering from Ohio State.
5. ## Forumla for rectified and filtered voltage

I want to make sure I'm reading this correctly. For a few of the examples, there are two equations for E. Looking at what reading I'm taking from my circuit and compairing it to those forumlas, E = .9 Erms is the voltage after rectification and E = 1.4 ERms is the voltage after filtering. Is that correct?
6. ## Forumla for rectified and filtered voltage

I picked up a transformer with a 12VAC (I'm assuming that's RMS voltage) secondary, rectified and filtered it and I get 18VDC. Now I know why this happens, but I'd like to find the forumla that models this. Any help? The end result is that I need 12VDC, so a tranny with a secondary that when rectified and filtered can produce this. My guess is I need a tranny with a 8VAC secondary.
7. ## Assistance IDing this temp sensor

On this page: link there's what I'm guessing is a temperature sensitive switch, but I don't have a proper name for it. What would this device be called? From diging through the Mouser catalog I came across thermoresistors that sound like they could be it, but from what I'm reading they don't function like this does. Any help IDing this part?
8. ## How did u get started in electronics?

My interest sparked in 5th grade when out teacher was teaching physics. Basically two batteries a light and a switch what what we worked with in class, then we had a project where we had to build a flashlight out of a toilet paper roll. Really cool project for a 5th grader. From there I hooked an it's been a minor hobby of mine ever since. I would have liked to minor in it, but it's not offered at my school. Luckily my major (welding engineering @ OSU) has a strong electronics part.
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