SparkFun: A look inside some common power supplies
https://www.electronics-lab.com/sparkfun-a-look-inside-some-common-power-supplies/
MTaylor @ sparkfun.com takes a look inside different power supplies he has on his box. Power supplies are everywhere these days. With the advent of switching power supplies, the cost of high-current supplies has radically dropped. Maybe you’ve noticed how the large, heavy, wall-wart style adapters are no longer lurking around your baseboards, falling out of […]
SRF01 Sensor teardown and reverse engineering
https://www.electronics-lab.com/srf01-sensor-teardown-and-reverse-engineering/
Jaanus Kalde wanted to know why his SRF01 sensor fails after dropping from the air so he did a reverse engineering on it. I needed small ultrasonic sensors for a flying sensor. So I got the smallest one – SRF01. Quite nice unit, works down to 0 cm. There were some problems with it – Maximum […]
Little Helper: an ARM powered mobile device
https://www.electronics-lab.com/little-helper-an-arm-powered-mobile-device/
Phillip Schuster has build a portable device featuring some ports to connect stuff like sensors and other circuits and some menu driven user interface to trigger various modules doing tests, reading data etc. Working in my lab with electronics I came across different little challenges once in a while, and noticed that I am missing […]
Switch Mode Power Supply (SMPS) Topologies (part I)
https://www.electronics-lab.com/switch-mode-power-supply-smps-topologies-part-i/
Microchip’s application note describes the basics of different SMPS topologies: The industry drive toward smaller, lighter and more efficient electronics has led to the development of the Switch Mode Power Supply (SMPS). There are several topologies commonly used to implement SMPS. This application note, which is the first of a two-part series, explains the basics of […]
Replacement LED driver for AN6877
https://www.electronics-lab.com/replacement-led-driver-for-an6877/
Dilshan Jayakody has designed a board to replace AN6877 base LED drivers using discreet transistors. He writes: AN6877 is linear AF level meter IC produced by Panasonic and it is commonly found on many audio equipment. This chip is no longer manufactured by Panasonic and finding replacement chip for AN6877 is also quiet difficult. The circuit […]
Raspberry Pi Tutorial: Create your own GUI with TkInter and Python
https://www.electronics-lab.com/raspberry-pi-tutorial-create-your-own-gui-with-tkinter-and-python/
educ8s.tv shows us how to build a graphical user interface on Raspberry Pi using TkInter and Python. Having a Graphical User Interface (GUI) on a touch screen makes controlling your Raspberry Pi so much easier. With Python and TkInter one can develop his own GUI very easily. In this video we are going to see […]
Tutorial on the Theory, Design and Characterization of a CMOS Transimpedance Amplifier
https://www.electronics-lab.com/tutorial-on-the-theory-design-and-characterization-of-a-cmos-transimpedance-amplifier/
In this episode, Shahriar and Shayan discuss the design and characterization of a deceptively simple CMOS inverter-based transimpedance amplifier. The the large and small signal behavior of the CMOS inverter is discussed and measured using the Keithley 2450 and 2460 source meters. The transient response is also measured using a Keysight MSO-S series oscilloscope. The […]
LT3091 – –36V, 1.5A Negative Linear Regulator with Programmable Current Limit
https://www.electronics-lab.com/lt3091-36v-1-5a-negative-linear-regulator-with-programmable-current-limit-2/
Linear Technology Corporation announces the LT3091, the latest addition to our LDO+ family, a 1.5 A low dropout negative linear regulator featuring low noise, rail-to-rail operation, precision programmable current limit and a bidirectional output current monitor. The device is cable-drop compensation capable, easily paralleled for higher current or circuit board heat spreading, and configurable as […]
Dual Motor L298 H-Bridge Motor Control
https://www.electronics-lab.com/dual-motor-l298-h-bridge-motor-control/
Dual Motor L298 H-Bridge Control project can control two DC motors connected to it. The circuit has been designed around popular dual H-Bridge L298 from ST. This circuit has current sense resistors for both H-bridges to provide voltage which enables this board to use in stepper motor applications. Specifications Motor supply : 7 to 46 […]
Dual Motor L298 H-Bridge Motor Control
https://www.electronics-lab.com/project/dual-motor-l298-h-bridge-motor-control/
Dual Motor L298 H-Bridge Control project can control two DC motors connected to it. The circuit has been designed around popular dual H-Bridge L298 from ST. This circuit has current sense resistors for both H-bridges to provide voltage which enables this board to use in stepper motor applications. Specifications Motor supply : 7 to 46 […]