If you need to switch a dc load, a MOSFET is a very useful component. Typically carrying much more current than a standard transistor, and better performance characteristics, like a high impedance gate that draws very little current. BJT’s are
Ever need to have a “clear all” check box, and have any of the other check boxes clear the clear all? Well, we needed that, and came up with a solution for your coding pleasure. It’s in PHP, but can
More and more I’m having to use GTIN barcodes instead of the old UPC-A bar codes. I needed a way to automatically grab the UPC-A bar code number from our database, strip the check digit, and generate a new GTIN-14
I was working on one of my websites this week, and needed the ability to allow the user to input some text only when a certain radio button is checked, and make the TextBox go away when another radio button
In previous posts we have described how to make a volt/amp/watt meter to measure power consumption, or production (solar, wind, etc). I never fully explained the watt hour and amp hour calculation, so here is a sample sketch that assumes
This is a bit off topic for this blog, but since Outlook is a common email client, I thought I’d pass along a little tip. All of a sudden, Outlook started responding to searches with “No Results Found”. Called Microsoft,