Here is one experiment to power two LEDs using Qi standard smart phone charger. The two LEDs are wired to opposite directions in parallel to the output wires of 0.17 mH coil. The coil has around 80 turns (5 layers and about 16 turns each) Here is LED active I actually built two circuits with →
Here is one experiment to power two LEDs using Oral B toothbrush charger. The two LEDs are wired to opposite directions in parallel to the output wires of 0.17 mH coil. This circuit can be used as an interesting novelty circuit drive a LED wirelessly from a toothbrush charger. In addition to that the circuit →
Wireless charging for toothbrushes offers a convenient and cable-free solution. Wireless charging eliminates the need for physical connectors or USB cables. Toothbrushes are commonly used in wet environments (bathrooms), and wireless charging systems for toothbrushes can be designed to be water-resistant. It’s a well-known fact that electronics and water do not go together. Most electric →
There are two widely used mains power frequencies for alternating current: 50 Hz and 60 Hz. Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency. But there are also other frequencies used for power. But →
Transistor–transistor logic (TTL) is 60 years old this year based on the following article (Wikipedia claims this happened already in 2023). TTL became the foundation of computers and other digital electronics. TTL integrated circuits (ICs) were widely used in applications such as computers, industrial controls, test equipment and instrumentation, consumer electronics, and synthesizers. The 7400 →
Ghost touches on a touchscreen occur on smart phones and tablets when the screen registers touches or taps without any actual input from the user. This issue can be frustrating, but there are several potential reasons and solutions for it: Screen Calibration: Check if your device has a screen calibration option in the settings. Calibrate →
Electrolytic capacitors blow up when they are pushed too hard. That’s normally a very bad thing. This hardware hack uses exploding capacitors as a propellant. For purely for innovation and engineering, this YouTube experimenter built a working capacitor revolver and tested its capabilities. I Built An Electric Capacitor Revolver! https://youtu.be/4Fy9bZEufx0?si=1iZFB-Kvs1GvOzR8 Funny idea, but not the →
Tinkercad is a free web app for 3D design, electronics, and coding, trusted by millions of people around the world. Tinkercad is a free-of-charge, online 3D modeling program that runs in a web browser. Users can quickly learn how to use the Tinkercad software through basic tutorial lessons. It’s used by teachers, kids, hobbyists, and →
I saw this circuit design at “I take pictures of electronics part @Facebook” https://m.facebook.com/groups/ElectronicParts/permalink/2237548103101179/ As many circuit designs posted to Facebook, this has it’s problems and non-idealities. Here are some comments on this circuit design: 1. At worst case LED will shine bright as a star in the sky until either it or the transistor →
IT’S A HUMBLE ‘SCOPE, BUT IT CHANGED OUR WORLD https://hackaday.com/2023/07/06/its-a-humble-scope-but-it-changed-our-world/ Now anyone seeking a connection with both Pong and the Apple II can have one of their very own if they have enough money because [Al Alcorn]’s Tektronix 465 oscilloscope is for sale. He’s the designer of the original Pong and used the instrument in →