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 ...

[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 ...

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 ...

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 ...

/: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 ...