Typically, amateur radio operators use the minimum power needed to accomplish a contact. That’s just part of being a good spectrum citizen, and well-earned bragging rights go to those who make transcontinental contacts on the power coming from a coin cell. But sometimes quantity has a quality all its own, and getting more power into […]
WELL-ENGINEERED RF AMPLIFIER POWERS HAM RADIO CONTACTS Continue Reading
Have you ever looked at the time, and then had to look again because it just didn’t register? This phenomenon seems more prevalent with phone timepieces, but it’s been known to happen with standard wall clocks, too. This latest offering in a stream of unusual clocks fashioned by [mircemk] solves that problem by forcing the viewer
SEVEN-SEGMENT SINGLE-STEPS THROUGH THE TIME Continue Reading
Today I will share following topics base on a bicolor matrix led 32×32: D.I.Y a bicolor led matrix 32×32. How to control led board above with NodeMCU ESP8266 via B.A.M method. Introduce and share my code for some cool real time clock projects with this bicolor led board. Let’s start with some videos: Rainbow letters
HAVE FUN WITH BICOLOR MATRIX 32×32 Continue Reading
A synthesizer without transistors could almost be the basis of a trick question, surely without transistors it must be using a vacuum tube or similar. Not [Dr. Cockroach]’s synth though, instead of transistors it uses coupled pairs of LEDs and light-dependent resistors as its active components. Its oscillator circuit comes courtesy of [Patrick Flett], and uses
A TRANSISTOR-LESS SOUND SYNTHESIZER Continue Reading
When Pete Juliano sat down to design a sideband transceiver for the 20 Meter (14 MHz) ham radio band, he eschewed the popular circuits that make up so many designs, opting instead for the innovative approach of the Seven-Transistor Novelty. He forged ahead, building a novel design that he calls Pete’s Simple Seven SSB Transceiver,
PSSST! HERE’S A NOVEL SSB RADIO DESIGN WITH ONLY SEVEN TRANSISTORS Continue Reading
Relays are often used as electrically controlled switches. Unlike transistors, their switch contacts are electrically isolated from the control input. On the other hand, the power dissipation in a relay coil may be unattractive for battery-operated applications. You can lower this dissipation by adding an analog switch that allows the relay to operate at a
HOW TO LOWER RELAY POWER CONSUMPTION Continue Reading
LCSC Electronics is a Shenzhen-based electronic component distributor, and one of the largest electronic component distributors in China. Founded in 2011, and starting as a small business, LCSC has grown to over 900,000 customers and over 310 employees, with around $150 million in sales. LCSC boasts of over 200,000 different products being distributed, ranging from semiconductors to transistors
LCSC.COM – YOUR ONLINE ELECTRONIC PART DISTRIBUTOR Continue Reading
Researchers at the National Institute of Standards and Technology (NIST) and the University of Maryland say they have developed a step-by-step recipe to produce single-atom transistors. by Rich Pell @ smart2zero.com Transistors consisting of only several-atom clusters or even single atoms, say the researchers, promise to become the building blocks of a new generation of computers
SINGLE-ATOM TRANSISTOR ‘RECIPE’ SIMPLIFIES ATOMIC-SCALE FABRICATION Continue Reading
Have you ever encountered plasma’s power? You may observe its process by looking at fluorescent or neon signage. These two lighting techniques exploit the visible light that plasma discharges emit. On a different note, have you heard about Plasma Surface Treatment? It is another use of the matter beyond fluorescent and neon lights. Surfaces can
Are There Any Duino Projects That Can Create Plasma Devices? Continue Reading
Did you know that researchers are looking for an alternative to silicon? Did you know in principle that Carbon Nanotubes processor could run three times faster while consuming about one-third of the energy of their silicon predecessor? The Engineers at MIT and Analog Devices have created the first fully programmable 16-bit Carbon Nanotube microprocessor. Since Silicon Transistor
A CARBON NANOTUBE MICROPROCESSOR MATURE ENOUGH TO SAY HELLO Continue Reading
