T&L Publications

Are you just curious or do you need to use it for something?<p>Root locus plot shows the poles and zeroes of the transfer function of a system. It's a method to analyze system stability & performance and can be used to design a compensator (system controller) that does, um, what you want it to d...

Are you just curious or do you need to use it for something1 ? Root locus plot shows the poles and zeroes of the transfer function of a system. It's a method to analyze system stability & performance and can be used to design a compensator (system controller) that does, um, what you want it to d...

There used to be something called Serpos that was popular a few years back for networking motor controllers. Google may help here.<p>I think you'll find that unless you need to be interoperable with some legacy system, you're best off designing your own protocol and letting it evolve as your needs c...

I second what Stephen said. However, the outputs of most modern microcontrollers will be spec'd at CMOS levels, so a 5V powered MCU will probably put out close enough to 5V to drive a logic level FET. If not, buffers can be added. Look into the IRLxxx series of HEXFETs from International Rectifier. ...

What's the application? Like toejam said, how much current do you need? The simplest thing that comes to mind is a 1k potentiometer with one leg tied to the +5 output of a 7805 regulator and the other leg tied to a 1V (or closest value) zener diode. Using an LED instead of the zener will give you ab...

The simplest way is probably to buy a cheap radio controlled car and use its receiver to control the sound chip. I've seen toys like this for less than $15 and you'd have the result quickly. Radio Shack used to sell sound chips; if they don't still carry them, DigiKey (www.digikey.com) will.

It's probably an LED with integrated resistor, they're commonly used when you need a simple indicator powered directly off 5 or 12V.<p> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by keymaker: I was burning up hard drives wi...