Personal Electronics

Personal electronics includes any device, including fitness and health trackers, watches and wearable technology or personal GPS devices. Examples of these devices include the iPad, iPhone, Cell Phones, Smartphones, BlackBerry Hardware, Digital Cameras/Camcorders, Home Theaters, Home Security systems, Game Consoles, Wireless Hardware and Automotive systems.

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How-to identify, diagnose and prove that the power surges that were caused by an affiliate of the power company destroyed my electronics. All my electonics have very strange behaviors. They are all damaged. As i'm sure all the other electical devices of all 150+ homes that were also plugged in are damaged as well. (Mobile Home Park)  I would be needing to be able to prove this.

So my question is: I'm attempting to prove this occurred, and I'm looking for the proper authorities to take this issue to. Where would I go about that?
Need Help understanding Mosfet IXTL2N450 .   It is a High Voltage N-Channel Mosfet with a low gate.

I am new to mosfets so please bear with me.  

I set up a basic circuit on a bread board to understand this Fet better.  

I am using 5v because it is easier to work with than my 2kv power supply I intend to use after understanding this fet better.

Problem:  When I apply 5v+ to the drain I am measuring 5v+ at the Source.  When I apply 5v+ to the gate it does nothing.... confused.  

Why is the drain 5v passing to the source without the gate voltage being applied?

Please school me. Thank you.

My father is 75 next month. He has a whole life insurance policy for $120,000 with Farmer’s. It is not a fixed contribution policy, and Farmers puts up the premiums every year. They started at about $150 per month, and are now after about 26 years at $350, and going up all the time. The surrender value of the policy is $282. Is it worth continuing with this policy, or should one just regard it as a term policy that has ended, and surrender it. He would just add the monthly payments of $350 per month to his $401K payments into the Prudential, that has been doing very well. (No, he does not have to draw on the 401K because he is still working and is a State employee (Professor)). His concern is for his wife. They have a paid-off house worth about $350,000, and some $500,000 in investments and will have a pension of $40,000 per annum, and currently receive social security payments to them of $40,000 per annum.  He still works and makes $100,000 per annum. My father also has a fixed payment whole life policy with Jackson for $200,000, which he intends keeping up. Should he continue with the Farmer’s policy?
Could someone propose components and electrical circuit for reliable and cost effective way where:

Temporary voltage difference of 1.5mV (or if easier 2mV) between pins 1 and 2 would close contact for 2 sec between pins 3 and 4 in one-shot mode (max 12V/2A may flow through closed contact)?

Note that electrical current through contact/pins 3 and 4 shouldn't go back through pins 1 and 2 to prevent burning up input component, and 2A fuse would be great to protect contact/board.

Thanks in advance
Hello all,

I have this really decent USB wireless digital mic device:
Samson XPD1 Lavalier USB Digital Wireless System

It works great with my computer, but I’d love to adopt this to also work with my DSLR camera.

I figured that I could build an interface to provide 5vdc to the USB based transmitter and extract analog audio with an D/A converter. But I’m currently um... lazy er... too busy at this time. LOL  

Can anyone suggest a ready to purchase adapter that can do this?

Thank you,
I am looking for some wireless earbuds to use around the house and at the gym. I am concerned about sound quality, but I also get headaches from larger, noise-cancelling headphones. (I am not sure if this is solely from the physical headphones or if there is something in the noise cancellation that causes a headache.)

I do not like earbuds with the rubberized/gummy feel to them. Those are uncomfortable and never seem to fit my ears properly. I also would prefer some that were not too loud to people sitting around me, as I tend to crank the volume up.

I am mainly considering AirPods, but I want to be sure that is my best choice. I have a pair of basic Apple earbuds right now, and they fit my ears well. I am looking to spend under $200. Any suggestions would be greatly appreciated!
Hello and Good Morning Everyone,

          I am interested in purchasing online a digital photo frame which will be used on top of a bedroom dresser.  At this point, I am unsure regarding the size for the digital frame.  I do not want it to be too small.   I am thinking perhaps a wide 10.1 inch frame would be a comfortable size for viewing, but, I am not sure though.   I would like for the chosen digital frame to also have a back light so the digital pictures can be seen at night in a slideshow fashion in addition to having a USB port.  Additionally, I would love for the digital frame to play background music as the pictures are being displayed.  

           In closing, I am sorry for being so picky with what I am exactly looking for here.  But, the chosen digital frame will be a Christmas present for a special friend.  That said, any recommended digital frames to check out will be greatly appreciated.

           Thank you

Hello and Good Evening Everyone,

         After frustrative attempts to get my Lumiman Smart light bulb to work with Alexa without success, I have decided to shift the focus to something less complicated with respect to setup.  What I have in mind should be simple.  Basically, I am interested in any recommended online purchase links for an LED bulb which screws into a lamp socket like an incandescent bulb and equivalent to at least a 60-watt incandescent bulb.  The bulb will need to be dimmable, customizable to different colors, and remote controlled.

         Any suggested online links to a remotely-controlled bulb with the above-mentioned expectations will be greatly appreciated.

         Thank you

Hello and Good Evening Everyone,

          I am needing recommendations for purchasing a digital frame.  Basically, I am interested in digital frames which can store digital pictures and display them as a slideshow.  I would also like it to have a night switch which can display the slideshow of pictures in the dark.  

          Any online purchase link or links for recommended digital frames with the above specifications will be greatly appreciated.  

          Thank you

I think my motherboard failed. It just shut off and then it smelled bad as melted plastics. I thought is from the power supply connector, the yellow female jack in the back of the laptop, so I took it apart, dissembling totally, piece by piece.
I cleaned up everything, especially the fan full of dust, using air pressure jets and also dedicated spray for electronic components, PCB.
The components on the motherboard are covered with a black sheet of plastic/vinyl-like.
After cleaning I spotted 2 capacitors carbonized – most probably the cause of the smell and failure.
They are SMD ceramic capacitors, seem size 1206, most probably MLCC.
I have the tools to remove and replace them, but I do not know their value.
Can someone help with the values of these capacitors?
I have in mind persons that either had similar experience and repaired motherboards before, maybe particular for Lenovo T410s – by chance, or if you can find somewhere the PCB sketch with the bill of materials and or/schematic.
What cause that failure? Is it the only one?
I do not know, but I would like to try to replaces those 2 capacitors. On opposite side of the PCB everything is clean, the components are untouched by the temperature.
I presume the failure comes from the small WiFi board inserted in the nearby connector. Maybe has to be replaced with another one. What I remember is that I let for few days the laptop set with power on, even when the lid was closed, and was not always on the table, but also …
I'm contemplating to sell e-cigarettes in Amazon US or UK.

Any idea if e-cigarettes are allowed in US or UK?

if it's allowed, is it a popular substitute in the US & UK for the real cigarettes?

Some countries (like Singapore) ban e-cigarettes: what could be the reason?

is there some sort of refills needed to refill the e-cigarettes?  Or after a certain
number of puffs, it can't be used anymore & had to purchase new ones?
Which ScreenFlow product does green screen removal for Live Streaming on an old Mac?

There are so many choices. I am not sure which is the best (and cheapest) for me.

I need to remove the green screen from the video feed, and replace it with a static image, since I am using WebinarJam for a live web seminar.

Which ScreenFlow product handles this green screen removal on a Mac? I have an old Mac, and hope it would work on a 2013 Mac with the following hardware:

Processor: 2.5 GHz Intel Core i5
Memory: 8 GB 1333 MHz DDR3
Graphics: Intel HG Graphics 4000 1536 MB

If I must, I would consider a machine upgrade to use ScreenFlow, but hope I can get it running with my current gear.

Using ChromaCam (or other) on my Mac to replace a green screen with a static image?

I need to replace the green screen for live streaming with a Logitech C922 on a Macbook.

Does ChromaCam support this? I see other names, like Syphon, CamTwist, VirtualEyez, Veescope, Wirecast, MimoLive (formerly BoinxTV) or Visual Communicator. (ChromaCam is based on Personify, which I think is Windows only.)

I need to run this on my Mac, since Windows runs of parallels, and I see a huge time delay on the webcam that make it unacceptable.

Please let me know.

Need to replace green screen background using a web cam for live streaming

I use WebinarJam and need a web cam, and have been directed to get a Logitech 922 or 930 (by EE and WebinarJam).

A primary use of this camera will be of me in front of a green screen, for live streaming. But I am not yet sure if WebinarJam handles the green screen replacement or if that is the job of the camera itself.

Here is a camera which does the green screen replacement...

I have a Mac, BUT, I could load Windows for this Personify green screen replacement technology to be compatible with my system.

My only experience with green screen replacement is with a video, using Premiere Pro. I have not does this live but have heard there are problems involving automatic green screen replacement, when the subject is moving, or when details, like fingers, get truncated.

Please provide some feedback on whether this green screen replacement works well with this camera? Is it possible that WebinarJam has a setting which does the green screen replacement.for me?

Need a web cam for live streaming

I need a web cam for live streaming my video image to my Mac, for use in a live webinar.

I may place it on a tripod since the top of my monitor may be a bit low. So, I think I need a conventionally sized screw hole at the bottom of the device.

I need it to be high enough quality so that my webinar looks good.

What kind of resolution do I need?

What kinds of features are useful?

I expect to buy on eBay.

Any suggestions from this page?


I am aware of the fitness bands and trackers for keeping statistics for fitness routines and a person's progress.

What I am looking for is a band that focuses primarily on health rather than fitness.

The device should have a heart monitor, blood pressure monitor and alarms for difference warning scenarios.

What would be the best tracker bands that would focus on health monitoring?

I'm designing a device that plugs into a base and am looking for clip-like part that will take a metal tab and transfer a small current (5V) to an LED in the device. The user should be able to pull the device off easily, but still have good enough contact to supply power.

What hardware should I be looking at?

Please see my very rough mockup:

We would like to get Freeview or terrestrial channels on our large display.

We are thinking of purchasing an Amazon Fire TV and connecting it to the large display to give access to these channels.

Does the Amazon Fire TV come with Freeview or terrestrial channels?

If not, is there a way of getting these channels on to the Fire TV and how would this be done?

Does anyone know what's the maximum distance (if any) for the key readers in the building?  From the electronic panel to the key reader.  
We use keyfobs for the building.  Sometimes one or two doors key readers (out of 5 total) do not react to the keyfobs.  And that those that farthest away from the electronic panels inside the Telco room.   So my suspicious would be a distance limit but I would be completely wrong.
Any knowledge in this?  Thanks.
Where are my videos hiding on my iPhone 7?

I am using a few teleprompter apps and start the recording okay, but I can not find where the video is being placed for either app. I look in the Camera app since that is where I see videos when created with the Camera app, but I am sure they are elsewhere...

Any ides where I can find them?

Why does my Canon SX720 HS NOT go into Record mode, and beep instead?

I record often with my Canon, and usually have no issue. But sometimes, pushing the Record button causes it to beep three or four times in rapid succession, and NOT record.

There is no error displayed. (Is there an error log somewhere?)

My only recourse is to power off then power up.

I do not have a clue what is happening, and fear that a longer video may be interrupted, where I am recording, only to find later it switched itself off.

How to delay the shutter on a Canon SX720HS

I can not find the option to have a 5 or 10 second daly on the shutter.

Need a lower cost alternative to a Canon 40X SX720HS

This is a great camera, but out of my price range.

What is a good alternative that costs less money?

I have a Samsung AirTrack speaker system:
The wireless subwoofer is not working.
I called Samsung and they said it needs to be repaired, but it's out of warranty.
What are the next steps I can take to try to troubleshoot this beyond doing a hard reset and re-pairing the speakers?
Dear Experts

Would like to understand why online ups is recommended for server what happens if offline ups is used, please help me to understand

Personal Electronics

Personal electronics includes any device, including fitness and health trackers, watches and wearable technology or personal GPS devices. Examples of these devices include the iPad, iPhone, Cell Phones, Smartphones, BlackBerry Hardware, Digital Cameras/Camcorders, Home Theaters, Home Security systems, Game Consoles, Wireless Hardware and Automotive systems.