It normally takes two transistors to build a blinker circuit (in order to make positive feedback possible). However, you can also use a photo-resistor (LDR) that is illuminated by an LED. The feedback ...

With cycling safety in mind, I bought a pair of low power red LED things that replace the bungs in the end of drop handlebars. They are a neat way to get a bit of extra visibility – and to give a ...

We had heard at SEMA that American Autowire was working on LED sequential taillight assemblies for '67-'69 Camaros. With the popularity of these First-Gen cars as both a desirable original restoration ...

[Eric Wasatonic] had a box of SWB2433 transistors that he had very little information about. In order to discover their properties, he fired up his curve tracer to compare these transistors with more ...

/:16 While your computer has on-screen ways of notifying you of new email, IMs, and other messages, they aren't much use when your display is asleep. DIY web site Instructables show us how to create a ...

LTspice is a free version of spice from Linear Technology, and it is delightfully easy to use, intuative, and seems to work rather well. Note, there is a flasher version 3 Current through component ...