This video explains how to replace the 9V internal battery of the multimeter.
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Resistor Calculator
Resistor Calculator for engineers, hobbyists and enthusiasts with an innovative user interface. Create a tool to calculate value of a resistor. Just select the colors of the resistor and the calculator will show you the resistor value with a pictorial representation of the resistor. Check here : https://resistorcalc.netlify.com/
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LED series and parallel circuit generator
The LED series/parallel array wizard is a calculator that will help you design large arrays of LEDs. The LED calculator was great for single LEDs — but when you have several LEDs, the below wizard will help you arrange them in a series or combined series/parallel configuration. Wizard link http://led.linear1.org/led.wiz The wizard determines the current limiting resistor value for each portion of the array and calculates power consumed. All you need to know are the specs of your LEDs and how many you’d like to use.
