New Pages #updates #woodworking #troubleshoot

It’s been a while since I’ve updated the website, I’ve been a little busy but I hope to include more frequent updates from here on out.

Anyways her are two new pages added to the site. The first is a woodworking project where I designed an entertainment center for a couple friends. The other is the start of a new section on how to troubleshoot and it can be found in the tutorials section. Enjoy.

Entertainment Center

Troubleshooting Connectors

Circuit Design: Autodesk 123D Circuits #Autodesk #123D

123D Circuits is a revolutionary free tool for designing your electronic projects online. You can design in a familiar breadboard view and the app will guide you to make professional printed circuit boards with built in layout tools. When you’re done just click to have your boards professionally manufactured and shipped for free worldwide.

What’s also cool is how you can easily, simultaneously work on the same circuit with your friends. And at any point you can compile and emulate your Arduino code inside a live, editable circuit!

Guides: Grounding Principles

In a previous blog on supply bypassing, I cautioned that poor bypassing could increase distortion of an amplifier. A reader, Walter, asked an interesting question… where should you connect the ground of a bypass capacitor to avoid problems?

This raises questions regarding proper grounding techniques. Wow. Big topic, but I may be able provide some insight with a couple of simple examples.

Figure 1 shows inverting and non-inverting amplifier stages with unintended, parasitic resistance or inductance in the ground connections (highlighted in red). The nodes A, B and C are all intended to be ground. But if current flows in parasitic ground impedances, these nodes will not be at the same potential. It is these parasitic ground impedances that can allow distorted ground currents to contaminate signals.

 

Read more at Texas Instruments

24VAC to 5VDC Conversion

Ray Wang wrote this post about voltage conversion from 24VAC to 5VDC.

Voltage conversion from 24VAC to 5VDC is quite useful, because a lot of home automation devices use 24VAC, including sprinkler solenoids, home surveillance systems etc. Having a conversion module makes it easy to use a single power supply, without a separate 5V adapter for your control circuit. There are plenty of resources you can find online about it. But these resources are rather scattered. So in this blog post I summarize and discuss the common choices.

Find more information at RaysHobby.