AC voltage levels: 0.316V The most common nominal level for consumer audio equipment is -10 dBV, 0.316 volts root mean square (VRMS). 0.7746V The reference voltage for the decibel unloaded (0 dBu) is the voltage required to produce 1 mW of power across a 600 ohms load (approximately 0.7746 VRMS) 1V The reference voltage for →
As we all know, a good LED could last very long up to 50,000 hours with with a good heat sink. But how is the LED driver electronics life? For common LED drivers there is at least one component is very weak. It’s the electrolytic capacitor. High Bay LED Lighting Driver Heat Dissipation Temperature Test →
Power Quality Symptoms & Solutions e-book is is written from an electronics point of view, rather than a power engineering one. And in so doing, provides the bridge between theory and real life. According to the book introduction more and more lecturers are using this material as a reference in their courses. You can find →
Have you ever designed an electronic schematic then wanted to share it on your blog? Or wanted help improving your circuit on a forum? Ever peered at a tiny/massive image of a circuit on a website and wondered why on earth there wasn’t a better alternative? I have done that quite often. CircuitBee is a →
As system speeds increase and designs shrink, circuit designers increasingly must debug signal integrity problems. Debugging common digital problems with a scope article tells how to effectively use your high speed oscilloscope to debug modern digital circuits. The ideal digital signal has fast transitions and only two states: high and low. In the real world, →
There are many Arduino-compatible microcontroller boards nowadays. The Ruggeduino is a ruggedized Arduino-compatible microcontroller board. Features include overcurrent and overvoltage protection on all I/O pins and 5V/3.3V outputs, ESD protection on all I/O pins and USB port, total microcontroller overcurrent protection, and operation at up to 24V. There are some things a regular Arduino will →
Why modern high tech electronics fail? Too often the reason for that is electrolytic capacitor failure. I have had a quite high number of electronics that has failed by this reason after few years of service. I have had a quite number of devices failed by capacitor: PC motherboard, PC graphics card, set-top-box, DVD player. →
I have participated in Free Product Road Testing program by Farnell. Farnell indentified my blog to road test some of their products. I was willing to participate, because what’s more fun than free high tech products to test. The first product i got was Arduino UNO. Arduino Uno is a a microcontroller board based on →
I have earlier written about 555 timer design contest. 555 Servo Controller was winner in several categories. It looked so simple and “have seen that eariler” type of circuit that I wondered why this was so winning circuit: Finally after few days I got time to check out the Simple 555 timer based servo controllers →