This tutorial back-to-basics video discusses the operating point (or quiescent point, Q-point, bias point, etc.) of a bipolar transistor (BJT) circuit, and how the choice of the circuit design can affect how sensitive the bias point will be to the value of Beta (current gain) of the transistor. Ideally, you’d want to use a circuit […]
BIPOLAR TRANSISTOR BIAS CIRCUITS AND BETA DEPENDENCE Continue Reading
Hey guys, I built another board, which is a 3-channel (RGB) LED driver based on an inexpensive chipset called PT4115 (you can find them on eBay or Aliexpress). The circuit is very simple and looks like Sparkfun’s PicoBuck. However, I used beefier components and a different chip. You may say it’s pretty much the same
Building a 3-channel, high power RGB LED driver Continue Reading
Introduction Recent innovations in the technological world have led to the introduction of some of the most sophisticated products. These products have led to the emergence of a new lifestyle and have changed completely the market demands for electrical products. Here at newfrog, we offer you some of the best and latest electrical products for
Shop for Latest Electronics at the Best Wholesale Prices at Newfrog Continue Reading
Introduction I’ve for some time now wanted to do more RF design. Although I have taken some RF design courses, I haven’t actually made a single RF design before. But you can’t learn without doing and inspired by the MIT coffee can radar designed by Gregory Charvat, I figured that building a radar should be
6 GHz frequency modulated radar Continue Reading
PremoBoard can be controlled by any system via the USB port: it is an expansion board designed for (but not limited to) cubieboard (A10 or A20). PremoBoard is a expansion board featuring the following: – 4 USB 2.0 – 2 LAN 10/100 – 2 WIFI (OPTIONAL) For more detail: PremoBoard
… and will prevent to spread there, where you don´t want to. Fluxes in pen Stannol series Mini Fluxer belong to the invaluable helpers of every electro-technician. How could I work without a flux so far? That´s a probable question of probably everyone, who once tried action of a solder flux. In a common
Mini Fluxer will spread solder there, where you want Continue Reading
This article is about interfacing gyroscope to arduino. Gyroscope is a device used for measuring the angular velocity in the three axes. It works under the concepts of angular momentum and can be used to determine the orientation of an object. Typical applications of gyroscope includes missile guidance, flight control, smart phones, game station joy
Interfacing gyroscope to arduino Continue Reading
The spectrum analyzer has always been a vital tool for the EMC engineer. Until the last few years, these instruments have been rather large and heavy desktop instruments, weighing up to 60 pounds, or more. With the breakthroughs in components used for wireless technology, the size and weight of these instruments has decreased dramatically. This
Review: Tektronix RSA306 spectrum analyzer (part 1) Continue Reading
Features 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98.5% Efficiency Wide VIN Range: 4.7V to 60V 2% Output Voltage Accuracy: 1.2V ≤ VOUT < 60V 6% Output Current Accuracy: 0V ≤ VOUT < 60V Input and Output Current Regulation with Current Monitor Outputs No Top FET Refresh in
LT3790 – 60V Synchronous 4-Switch Buck-Boost Controller Continue Reading
Hey, sorry everyone, I know it’s been a while. But I hope this post will make up for that! Anyone who has done embedded programming knows that an easy way for microcontrollers (like arduino) to connect to a PC is through a serial connection. Unfortunately, not many computers have a serial port these days, and
CH340G – alternative USB to serial IC Continue Reading
