Do you already know the similarity between a quartz blank and a pillow? Exactly! Both have the same shape. The so-called “bevelling” or “contouring” in the production process of quartz blanks results in the characteristic lens shape of quartz blanks. “This procedure is mainly used for ‘thicker’ blanks, which are in the low frequency range,

Charging Process: Lithium-batteries are charged with constant current until a voltage of 4.2 V is reached at the cells. Next, the voltage is kept constant, and charging continues for a certain time. The charger then switches off further charging either after a preset time or when a minimum current is reached. In the rare event

What you always wanted to know about quartz crystals, but didn’t dare ask until now … – Why does a quartz crystal have to be hermetically sealed? At the end of the complex production of a quartz, or rather the small quartz disc, the quartz blank, it has to be mounted in a housing that

What special features are there to consider when designing-in a lithium polymer cell? An important point, according to battery expert Dr Jürgen Heydecke, is certainly the so-called “swelling”, the natural swelling of a lithium polymer cell in a fully charged state and over cycles. A fully charged cell is thicker than a discharged one. During

Ein Feuerwerhmann benutzt eine Wärmebildkamera. Im Hintergrund ist ein Feuerwehrauto zu sehen und es sprühen Funken

Everybody knows the emergency number for the fire department. And probably everyone hopes they are never forced to dial it. But in fact, this happens more often than you might think. This is shown by current statistics from the German Fire Brigade Association. According to these, the fire department was called out around 700 times

Electronic Locking Cylinder

Electronic locking cylinders have long since replaced mechanical locks in many companies. Not the key, but the transponder or key card is granting access to the company building. In private homes, too, the trend is moving towards the electronic lock. Depending on the product and manufacturer, door locks can even be opened by cell phone.

Two hands hlding a tray of lithium polymer batteries

Lithium-ion and lithium-polymer batteries currently set the standards in the battery market in terms of performance, cell voltage and service life. While lithium ion batteries are thought to power the vast majority of our cars in the future, lithium polymer batteries are already supplying power to our mobile phones and laptops today. Both cell types

A blender in a kitchen

“If Apple made a blender, this would be it” – the British-American online news portal Mashable nailed it. When it comes to aesthetics and product design, the blender “Millo”, created by the Lithuanian start-up Millo Appliances, is very close to the great idol from Cupertino. Besides its award-winning design, the technology behind “Millo” is particularly

Mann mit Hemd

TCXO: How it works and why

A TCXO is a temperature-compensated crystal oscillator that is used whenever particularly high stability within a variant temperature environment is required, i.e. when the frequency deviation of the oscillator must be minimal over its entire operating temperature range. Oscillators using AT quartz crystal plates, so called “blanks”, are the most economical solution to create a

Handorthese

Everyday activities such as tying shoes or eating with knife and fork are almost impossible for patients with paralyzed or weakened hands. The German-based start-up HKK Bionics is aiming to help these people with its newly developed hand orthosis. “Our exomotion® hand one is a kind of motorized partial glove with forearm splint,” explains Dominik