Sometimes voltage fluctuations occur in the main electricity supply in our homes offices etc. These fluctuations can occur due to the interruption of heavy load, lightning and switching impulses. This can lead to the electronics part damage and sometimes causes major accidents. Voltage fluctuation or irregularities are also major issues in industrial appliances and often […]
How to Make PCBA for High/Low Voltage Protection Read More »
The DC205 low-noise, high-resolution DC voltage source is the right tool when a precision bias source is needed. Its bipolar, four-quadrant output delivers up to 100 V with 1 µV resolution and up to 50 mA of current. In 4-wire mode (remote sense), the instrument corrects for lead resistance delivering accurate potential to your load.
DC205 – PRECISION DC VOLTAGE SOURCE Read More »
KEMET released the Tantalum Stack Polymer (TSP) O 7360-43 and the 82uF/75V rated voltage extension in Polymer Hermetically Sealed. The TSP series was designed to allow for the highest capacitance/voltage (CV) ratings in surface mount device (SMD) capacitors. The company’s KO-CAP® High Reliability Series T540, T541 and T543 are all available for stack configuration in the TSP
KEMET RELEASES NEW TANTALUM POLYMER CAPACITORS Read More »
Arduino serves as a foundational device for constructing electronic projects. It comprises a pre-programmed microcontroller or integrated development environment for coding and uploading onto the physical board. These devices facilitate the creation of interactive objects, receiving input from diverse sensors and managing motors, lights, and various outputs. Unlike requiring a separate programmer, Arduino allows direct
Smart Home Automation Using Arduino: A Comprehensive Guide for Engineers Read More »
When is 14 volts not actually 14 volts? Given [Anders Nielsen]’s recent struggles with erasing an old-school EEPROM, it’s when you really need it that things tend to go pear-shaped. A little background is perhaps in order. [Anders] is working on a scratch-built programmer for ROMs to complement his 65uino project, which puts a complete 6502 computer into the
ERASING EEPROMS ISN’T ALWAYS AS EASY AS IT SEEMS Read More »
This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit is very fast
AUDIO VU/SOUND LEVEL METER WITH LM339 Read More »
[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino code showing how handy this can be for battery-powered projects. The classical way to measure a system’s voltage is to connect one of your MCU’s
ARDUINO MEASURES REMAINING BATTERY POWER WITH ZERO COMPONENTS, NO I/O PIN Read More »
[mircemk] built a slick-looking LED tester with a couple handy functions built in. Not only can one select a target current to put through an LED, but by providing a target voltage, the system will automatically calculate the necessary series resistor. If for example the LED is destined for 14 V, this device will not only show
LED TESTER ALSO CALCULATES RESISTOR FOR TARGET VOLTAGE Read More »
The circuit in Figure 1a comprises a voltage follower, IC1 , and the reference-voltage source of IC2. IC1 is an Analog Devices AD8661 op amp, which has a guaranteed input-bias current of no more than 1 pA and a typical input-bias current of 0.3 pA (Reference 1), and IC2 is an Analog Devices ADR391 precision voltage reference (Reference 2). The manufacturer trims
SIMPLE FIXTURE DETERMINES LEAKAGE OF CAPACITORS AND SEMICONDUCTOR SWITCHES Read More »
Sometimes you find things you have not even been looking for… A chaotic oscillator is an electronic circuit that can exhibit “chaotic“, nonperiodic behavior. A commonly cited example is Chua’s circuit, but there are many others. I always regarded these as carefully designed, rather academic, examples. So I was a bit surprised to observe apparently chaotic behavior
BUILDING A CHAOTIC OSCILLATOR FROM COMMON COMPONENTS Read More »
