![Teardown: 12V AC adapters Teardown: 12V AC adapters](https://www.electronics-lab.com/wp-content/uploads/2016/04/teardn12V1a-e1461227458202.jpg)
Teardown: 12V AC adapters
Michael Dunn has done three teardowns of the worst 12V adapters and what he found is interesting. Yes! Can you believe it? This board used to be in another adapter housing, or more likely, in an end-product. It seems Chinese manufacturing has sunk to a new low: repackaging used...
Continue Reading![Solar Cell IV Curve Tracer Solar Cell IV Curve Tracer](https://www.electronics-lab.com/wp-content/uploads/2016/04/FQGRK7PIN7OPE79.MEDIUM.jpg)
Solar Cell IV Curve Tracer
This instructable shows how to build a photovoltaic cell curve tracer using Arduino and OPA549S OPAMPS. This projects shows how to create an IV (Current and Voltage) Tracer that can be used to teach the electrical characteristics of a solar panel. This project was created as part...
Continue Reading![USB curve tracer for NPN transistors USB curve tracer for NPN transistors](https://www.electronics-lab.com/wp-content/uploads/2016/04/2SC945-600x342.png)
USB curve tracer for NPN transistors
Dilshan Jayakody documented his USB port base NPN transistor curve tracer project: Curve tracer is an electronic test instrument to analyze the characteristics of transistors and other discrete semiconductors. In this post we construct USB base curve tracer to analyze properties of...
Continue Reading![Basic Switching Voltage Regulator Tutorial Basic Switching Voltage Regulator Tutorial](https://www.electronics-lab.com/wp-content/uploads/2016/04/AO18-Banner-01-760x443-e1461149544535.png)
Basic Switching Voltage Regulator Tutorial
James Lewis @ baldengineer.com discuss about switching regulator types and uses. A switching voltage regulator is one of my favorite circuits. In school, they were the first circuits I built where I understood how transistors worked. In fact, they were the first circuit I saw an...
Continue Reading![Arduino Body Thermometer + LCD I2C Arduino Body Thermometer + LCD I2C](https://www.electronics-lab.com/wp-content/uploads/2016/04/F9G4SKSIN4W3YBL.MEDIUM.jpg)
Arduino Body Thermometer + LCD I2C
This is a body thermometer using a thermistor sensor, Arduino and LCD display. I've decided to provide a funny Arduino concept thermometer in case its the middle of the night, pharmacies are not working, you are not feeling well and you want to check your body temperature. If you...
Continue Reading![Simple circuit provides precision ADC interface Simple circuit provides precision ADC interface](https://www.electronics-lab.com/wp-content/uploads/2016/04/instrumentation_amplifier.png)
Simple circuit provides precision ADC interface
Moshe Gerstanhaber @ edn.com provides an simple ADC interface using instrumentation amplifier IC. Real-world measurement requires the extraction of weak signals from noisy sources. High common-mode voltages are often present even in differential measurements. The usual approach to...
Continue Reading![AAduino – Arduino Wireless in AA form factor AAduino – Arduino Wireless in AA form factor](https://www.electronics-lab.com/wp-content/uploads/2016/04/aaduino-comparison-e1461059426451.jpg)
AAduino – Arduino Wireless in AA form factor
Johan wanted to shrink his Arduino based ISM radio node to fit in an AA battery compartment so AAduino was born. The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is powered...
Continue Reading![PIC16F628A Programmable Digital Timer PIC16F628A Programmable Digital Timer](https://www.electronics-lab.com/wp-content/uploads/2016/04/TimerOP1.jpg)
PIC16F628A Programmable Digital Timer
Raj Bhatt shared another project with us. This time is a programmable digital timer with relay switch based on PIC16F628A. Programmable relays find use in numerous automation applications such as automatic street light control, watering and pump control, HVAC, home automation, power...
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