A very simple DIY solar-powered USB charger
https://www.electronics-lab.com/simple-diy-solar-powered-usb-charger/
Raj @ embedded-lab.com tipped us with his latest project. It’s a simple, but useful USB Solar powered charger able to charge a power bank or your smartphone. Yesterday, I built a very simple DIY solar-powered USB charger for my TP-link 10400mAh USB Power Bank. All I needed was a 6V/3.5W solar panel and the TD1410-based 5V buck converter module. […]
Air pressure sensors in smartphones
https://www.electronics-lab.com/air-pressure-sensors-smartphones/
Dr. Thomas Block has a great article about air pressure measurement on smartphones and which benefits this may have. Today’s smartphones utilize a wide array of accelerometers, gyroscopes and various other sensors in their designs. Relatively unknown is the barometric pressure sensor, which measures air pressure. These sensors are currently being integrated into premium-grade smartphones, […]
Basic Electronics – How to use a 555 Timer
https://www.electronics-lab.com/basic-electronics-use-555-timer/
Do you want to know how to use a 555 timer? Laura brings you more Back to School tips and tricks on using this integrated circuit. Basic Electronics – How to use a 555 Timer – [Link]
Circuit provides cold-junction compensation
https://www.electronics-lab.com/circuit-provides-cold-junction-compensation/
Mark Maddox @ edn.com has a design idea on cold-junction compensation using AD7708. The accuracy of any circuit or system that uses a thermocouple to determine the temperature of a process is limited by the accuracy of the method used to perform cold-junction compensation. In a thermocouple measurement, two wires of dissimilar metal join together […]
100Vin, 5W out regulator uses primary-side control
https://www.electronics-lab.com/100vin-5w-regulator-uses-primary-side-control/
LT8303 is a monolithic flyback regulator in a TSOT-23 package that simplifies the design of isolated DC/DC converters. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no opto-isolator, LT1431 or third winding for regulation. by Graham Prophet @ edn-europe.com The LT8303 operates over a 5.5V to 100V input […]
Low noise Mini Electret Microphone PreAmplifier
https://www.electronics-lab.com/low-noise-mini-electret-microphone-preamplifier/
The single supply microphone pre-amplifier amplifies the output signal of an electret capsule microphone to audio line levels. An op amp is used as a trans-impedance amplifier to convert the output current from the microphone in to a signal level voltage. The circuit works with 9V so it is good choice for battery operated systems. […]
Low noise Mini Electret Microphone PreAmplifier
https://www.electronics-lab.com/project/low-noise-mini-electret-microphone-preamplifier/
This single supply microphone pre-amplifier amplifies the output signal of an electret capsule microphone to audio line levels. An op-amp is used as a trans-impedance amplifier to convert the output current from the microphone into a signal-level voltage. The circuit works with 9V so it is a good choice for battery-operated systems. Features Supply 9V […]
Printable battery paves the way for custom-shape power sources
https://www.electronics-lab.com/printable-battery-paves-way-custom-shape-power-sources/
A new type of batteries called “Printable Solid-State (PRISS) Lithium-Ion Batteries” was designed by a group of researchers from the Ulsan National Institute of Science and Technology (UNIST, South Korea). The new battery is created from consecutive layers of printed composite materials. With a simple stencil printing process followed by ultraviolet cross-linking, a solid-state composite […]
8 Channel Relay Board with onboard 5V regulator
https://www.electronics-lab.com/8-channel-relay-board-onboard-5v-regulator/
This is a general purpose relay board accepting 8 inputs to drive 8 relays providing control requirement in your project. This board can also be used as an add-on card for the various Development board that we provide and various microcontroller boards. Features Robust Design using NPN transistor to drive each relay Relay On Indicator […]
Temperature-to-period circuit provides linearization of thermistor response
https://www.electronics-lab.com/temperature-period-circuit-provides-linearization-thermistor-response/
by S Kaliyugavaradan, Anna University, Madras Institute of Technology, Chennai, India; Edited by Brad Thompson and Fran Granville -November 10, 2005 Designers often use thermistors rather than other temperature sensors because thermistors offer high sensitivity, compactness, low cost, and small time constants. But most thermistors’ resistance-versus-temperature characteristics are highly nonlinear and need correction for applications […]