| If we wish to use a step-up switching regulator to run several LEDs from, for example, a 3 V battery, we find that the maximum usable mark-s...
More about LED (745)
| Most PC enclosures provide only a single LED to indicate hard disk access, with the LED being connected to the motherboard via a two-pin con...
| Light effects have always been popular. Now that LEDs are available in all sorts of shapes, sizes and colours for reasonable prices, a whole...
| Designs for audio amplifiers with DC coupling to the load are not often encountered these days, even though they offer definite advantages....
| In this month’s modding & tweaking article we delve a little more into the ‘not so very useful, but nevertheless quite funny’ types of circu...
| Many readers have asked how they can make their own E-blocks. This month we take a look at some options on making your own prototype E-block...
| Commercial PCB exposure light boxes usually employ gas discharge tubes as an ultraviolet (UV) light source, these devices are however bulky,...
| If you want to apply computer control to a solenoid valve or another DC load there is no need to start looking for an expensive measurement...
| The switch-mode power supply chosen by the author for this article is built without the use of special-purpose ICs and so can be completely...
| This article mainly concerns enthusiasts using radio controlled scale models that include an electrical motor without permanent magnet brush...