By far the most used oscilloscope probes are the passive 10:1 attenuation probe. Next step in probe categories are active probes. Active probes succeed in practically eliminating reactive loading of the circuit under investigation by means of a small solid-state amplifier in the probe body adjacent to the tip. There are two main classes of →
ARM is the world’s most popular RISC processor architecture, widely used in embedded systems in addition to mobile phones and small computers. The latest is 64-bit ARM v9. At the same time, competitors are tuning in their own competing versions. The first ARM v9 based smart phone chips have just been released: MediaTek Dimensity 9000 →
Practical cyber security in many businesses Created with https://dev.to/rly →
Finnish Christmas traditions explained https://yle.fi/news/3-12236370 How did Santa Claus become a resident of Finland? Why don’t Finns sauna after dark on Christmas Eve? We take a deep dive into uniquely Finnish Christmas traditions. →
Smoke and fire alarms can save lives. The occupant and the housing company are responsible for the acquisition and maintenance of smoke alarms in Finland. It is the duty of the occupant of the flat, i.e. the resident, to buy a smoke alarm and to keep it in good working order. Smoke alarms must meet →
Perl turns 34 today (actually yesterday because delay in posting). Happy cake day. See original announcement https://github.com/Perl/perl5/commit/8d063cd8450e59ea1c611a2f4f5a21059a2804f1 Perl is sometimes semi-jokingly referred to as a “write-only” language. That is, its syntax is so bizarre that code written in Perl is essentially unreadable by other programmers and thus not editable by other programmers. This sort of →
Needed adjustable resistor for electronics lab. I found 0-9999 Ohm Simple Resistance Box Precision Variable Decade Resistor Teaching Instrument Measurement & Analysis Instruments from Tools on banggood for sale one day on the app. Specifications: 100% brand new and high quality Attenuation Range / Mini Step: 0 to 9999ohm, 1 ohm step Shell material: Plastic →
I got some TAIYO YUDEN 9012R0 LEADED COMMON MODE CHOKE COILS FOR AC LINES and thought some uses for them. The specifications for those from datasheet were: TLH10UA 901 2R0 RoHS Common mode inductance (mH): 0.9 min. Normal mode inductance (mH): 0.067 DC resistance: 0.089 Rated current (A max): 2.0 Rated voltage AC (V max): →
Fingerpori is a Finnish comic strip written and drawn by Pertti Jarla. It started in Helsingin Sanomat in February 2007, and is comprehensively distributed in major provincial newspapers. The humour in Fingerpori is largely verbal and is often based on (mostly untranslatable) wordplay and puns. The strips often have an absurdist element. But some Fingerpori →
Research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: The airborne sound wave vibrates transversely and carries both spin and orbital angular momentum like light does. The findings shattered scientists’ previous beliefs about the sound wave. “While the airborne sound is a longitudinal wave in usual cases, →