Optimale Vorbereitung für Resist und Lötstopplack

Um die Kupferoberfläche von Leiterplatten zu säubern und anzurauen, werden in der Regel Bürstmaschinen mit Schleifwalzen verwendet. Damit lassen sich zwar Bohrgrate entfernen, eine optimale Haftung des Fotoresists sowie des Lötstopplacks lässt sich jedoch nicht erreichen, da die abgetragenen Strukturen zu grob sind.

Um die aktuellen Anforderungen des Marktes besser abbilden zu können, hat der Berliner Leiterplattenspezialist LeitOn sein Internet-Kalkulationstool kräftig ausgebaut. Speziell bei Aluminiumleiterplatten wurde die Variantenbreite deutlich erweitert.

November 2012:  DLP Design, Inc. is pleased to announce the new DLP-RFID2 and DLP-RFID2D HF RFID readers. 

Lithium-ion (Li-ion) batteries have become popular for portable electronics such as laptop computers and smart phones because they boast the highest energy density (capacity per unit volume) of any commercial battery technology. Other benefits include thousands of recharges and no occurrence of the “memory effect” that plagued early nickel cadmium (NiCd) rechargeable cells.

The latest addition to AR’s “S Series” Solid State Microwave Amplifiers allows you to fulfil your wideband EMC and Wireless applications in one unit without the need for band switching.

Replacing traditional incandescent lights with efficient, cool, and long-lasting LEDs is a good idea. But like all good ideas, the implementation is a little harder than coming up with the notion in the first place. 

Was wäre ein Sommer ohne die berühmte extrastarke Elektor-Ausgabe? Das „Halbleiterheft“ ist eine beliebte und bekannte Fundgrube für Elektronik-Anfänger, Fortgeschrittene und Profis! In diesem Jahr haben sich die Entwickler im Labor und die Redakteure noch einmal extra ins Zeug gelegt, um das Heft ...

Despite the popularity of switching DC/DC converters, linear regulators still form a healthy percentage of the business of leading power module chip suppliers such as Maxim, Texas Instruments, Linear Technology, and austriamicrosystems. Modern design techniques and wafer fabrication processes have enabled linear regulators to remain the best choice for a number of applications. This article compares linear and switching regulators and considers which applications could benefit most from the key advantages of the former, including their simplicity, low cost, and ability to provide stable voltages without the ripples inherent to switching converters.

There are two major approaches to dimming LEDs: PWM and analog. Both approaches have advantages and disadvantages. PWM dimming greatly reduces color changes in the LED with varying brightness levels, because the LED essentially runs at a constant current when it is on and at no current when it is off. However, this advantage comes at the expense of additional logic to create the PWM waveforms.

This is the article that started it all. Get the basics on the DLP-USB1 USB adapter.