Bel Fuse Inc. has introduced the XRCM 200 and 300 Series of second-generation DC-DC converters for railway and transportation applications. The XRCM 200 provides 200 W with dual ±15 V outputs while the XRCM 300 provides 300 W with a single 24 V output and supports continuous operation at an 85°C ambient temperature; both accept…
In this project, we’ll build a “smart” restroom door system using PNP and NPN transistors, where simple switching logic replaces software. The design avoids apps and Wi-Fi and instead relies on solid engineering fundamentals. The aim is to design a low-cost, fail-safe solution that detects occupancy, controls indicators, and automates utilities with minimal components. Let’s…
Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial – VHDL tutorial 16 – we designed a D flip-flop circuit by using VHDL. For this project, we will: Write a VHDL program to build a JK flip-flop circuit Verify the output waveform of the program…
Star Wars melody from "How to play musical notes and melody tunes on Arduino."
SMART SECURITY SYSTEM USING RPI
Automatic Wash Basin Tap Controller
Solar
Ping Pong Game
Texas Instruments LM4060 and LM4060-Q1 High Precision Shunt Voltage References are designed to deliver highly accurate and stable reference voltages for precision analog and mixed-signal applications. These devices combine low power consumption, excellent temperature stability, and high initial accuracy, making them suitable for industrial, instrumentation, energy management, audio, and automotive systems. The LM4060 series offers…
An AIS-140 VLTD spends most of its time following a predictable operating loop. The protocol becomes more interesting when that normal flow is interrupted and the device has to decide what to send, store, or do next. In Part 1, we followed the protocol from startup through normal PVT transmission and the panic-button emergency flow.…
Welcome to the Engineering Deep Dive: Highlights & Technical Questionnaire This collection outlines key engineering challenges on our Electro-tech-online forums across multiple domains—including power electronics, motor selection, PCB manufacturing rules, circuit simulation, and RF…
UM 3561 is an excellent Siren generator IC widely used in Toy applications and Surveillance systems to generate different tones. It a ROM (Read Only Memory) IC which can be operated in 2 pen cells and it functions normally down to 2.4 volts. Using only a few components, it is very easy to construct a…
