Can someone explain where this noise comes from?
I have a small tv in my kitchen that lives in the cabinet over the fridge on a pull out mount. the speaker is obviously very small and when I'm really getting my cook on, I can't hear it. it's been...
View ArticleWhere I can find an USB dongle to connect two devices with external power ?
Can you please tell me where I can find an USB dongle which follows this diagram ? I have a tablet and a BobjGear USB to RJ45 Ethernet Adapter, but the battery will discharge while using the tablet...
View ArticleAnyone have experience with ASIC design?
I'm looking to port a working FPGA design to a custom ASIC manufactured by MOSIS. Does anybody have experience doing this or know of any resources I can use to get started? What CAD tools are...
View ArticleHelp With Transistor Based Amplification And The Existence of A Common Point
Hello, I'm thirteen years old and I dabble in the fields of electronics. When I build an electronic circuit that amplifies a signal from a DC source other than the power supply, how do I establish a...
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Explaining some LED basics and a simple constant current circuit
submitted by sanels [link][4 comments]
View ArticleDigital Switching From Other Power Supplies
This post elaborates a bit on my earlier post. If I wanted to switch a digital signal from a small computer, how would I tie grounds together. It's not really amplification but just switching from a...
View ArticleHigh output voltage boost converter help
I'm designing a nixie tube clock, and I need to design a boost converter to convert a 5V input to about 180V output. I'd like to do something similar to Lady Ada's simple boost converter, but it uses a...
View ArticleVintage Turntable Cord Replacement Help
A bunch of pictures are included in the link below. http://imgur.com/a/ZO1RuMy friend gave me a vintage phonograph that didn't work when it got plugged in. I took the thing apart and saw the original...
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Flash Games to practice your electronics skills (Oscope/multimeter) and others
submitted by repstos [link][9 comments]
View ArticleWireless Home Security
I would like to make my own home security system. I currently have an ADP system installed with no service. Does anyone have any information on using the existing sensors, or are there any products...
View ArticleHow to insert this button cell.
Sorry for the stupid question, but im confusedThis is the backside of my calculator.On the bottom of the battery mounting in the plastic is a minus- sign as you can see. But there is also written...
View Articlehelp finding DB1303 part
manufacturer said the part is recalled but would not give a replacement or repair part. HY50 E2000089 15A 250 VAC 20A 125 VAC 1 HP 125/250VAC submitted by overflow3234 [link][comment]
View ArticleLooking for electronics learning project
I am trying to improve my electronics skills currently. I am doing an online lecture about electronics for theory, but I think its more important to do something practically to get a good feeling for...
View ArticleIs it possible to power an inverting op amp with a single supply?
Im having a bit of trouble figuring out what is the best way to do this. What I mean is, I need a 'negative' drive voltage (at input) and a positive voltage (at pos supply pin). Im guessing I need to...
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Where can I buy 6- or 7-conductor bundled mini-coax by the foot?
Hi all, I need to build some RGBHV+LR AV patch cables to connect some equipment to a Sony PVM, but I can't find bundled mini-coax for sale by the foot with enough conductors to handle RGB, H/V sync,...
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"A is for Ampere" - Circuit Playground Episode 1
Adafruit Industries just posted the first episode in a new educational series aimed at teaching kids about electronics. The episode is entitled “A is for Ampere” and teaches the basic theory behind...
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SMD pins of a USB Micro B connector next to a sewing needle
submitted by SnAgCu [link][15 comments]
View ArticleCapturing USB keyboard/RFID data?
My boss handed me a USB RFID reader the other day that's designed to work with a piece of software we use. Basically it just allows you to use RFID tags to trigger events. While pretty cool, I didn't...
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