About: Ibrar Ayyub

This article explains how the LMC555 timer chip works, from the tiny transistors and resistors on the silicon chip, to the functional units such as comparators and current mirrors that make it work. The popular 555 timer integrated circuit is said to be the world’s best-selling integrated circuit with billions sold since it was designed […]

Temperature monitoring and control is important in industry environments. Sensors are widely used for measurement of temperature. Usually, a temperature sensor converts the temperature into an equivalent voltage output. IC LM35 is such a sensor. Here we describe a simple temperature measurement and display system based on LM35 sensor and PIC16F877A microcontroller. The temperature in […]

Analog Devices has introduced a  FET input AFE (analog front-end) with an integrated ADC driver designed to interface directly with current mode sensors such as photo diodes and highoutput impedance-voltage sensors. The ADA4350 integrates a FET input amplifier, switching network and ADC driver into a single package, which simplifies design and lowers power and PCB […]

Features Wide Input Voltage Range: 3.4V to 42V 2.5A and 1.5A Buck Regulators with Separate Inputs Fast Minimum Switch On-Time: 35ns Ultralow Quiescent Current Burst Mode® Operation: 6.5μA IQ Regulating 12VIN to 5VOUT and 3.3VOUT Output Ripple < 15mV 180° Out of Phase Switching Adjustable and Synchronizable: 200kHz to 3MHz Accurate 1V Enable Pin Thresholds […]

I’m currently mainly working on my new anemometer design but once in a while I get distracted. For example when my Keysight E3645A lab power supply was making so much noise that I could hardly concentrate. That’s when the idea of this fan controller was born.Of course, the best temperature controlled fan in the world doesn’t […]

Here is a simple, versatile project which indicates the level of water and automatically controls it by using PIC Microcontroller. The Water Level Sensing Section senses the level of water in the tank and sends it (wireless) to the Receiver Section. Receiver Section is connected to the Controlling Section, which process the received information and produces visual, […]

PURPIC, the wearable PICkit2 clone PIC programmer based on a design by David Tait using through hole transistors and resistors glued to a piece of cardboard. Oh, how times have changed. And as usual, I’m still 7* years behind those changed times. My latest project is a remake of today’s hottest 7-year-old PIC programmer, the […]

Features Gain Bandwidth Product: 4GHz Low Input Bias Current: ±3fA Typ. Room Temperature 4pA Max at 125°C Current Noise (100kHz): 7fA/√Hz Voltage Noise (1MHz): 4.0nV/√Hz Extremely Low CIN 0.45pF Rail-to-Rail Output AV ≥10 Slew Rate: +1500V/μs, –1000V/μs Supply Range: 3.1V to 5.25V Quiescent Current: 16.5mA Operating Temp Range: –40°C to 125°C Single in 8-Lead SO-8, […]

Current Sensing Switch is designed to operate a Relay Contact when there is a DC current through the sense resistor exceeds the set point, Set point adjustable from 1A to 3Amp using on board potentiometer. This circuit can offer over current protection to your project. Specifications Input: 12 VDC Range: 1 to 3 A selectable […]

For a long time now I’ve been wanting to make my own microcontroller-based prototyping board. My original motivation was the unjustified high costs for even the simplest boards (a basic Arduino for $30 – why???) and the challenge of designing something that anyone can make at home within a few hours, with parts that can […]