but we must take into consideration the color of the LED as well as the wattage rating of the required resistor, and the number of LEDs in the circuit. We hope reading How to Calculate Resistor Value for LED Lighting gives you what you would need for your project. ...
Now that you have your resistor with the proper value, you can place one end of the pull-up resistor to VCC and one end between the input device and the MCU. Congratulations! You now know what a pull-up resistor is and how to use one. Some microcontrollers such as Arduino boards, and...
But since the given supply voltage to an LED would be mostly higher than its forward voltage value, adding a current limier resistor with LED becomes imperative. Therefore I have explained how a current limiter resistor may be calculated for a selected LED or a series of LEDs Calculating Curre...
We wanted to know exactly how a Cold Heat tool works, so we took one apart. In this article, you'll learn Cold Heat's secrets, as well as what happened when we tried to use ours. Soldering Advice Soldering is a fundamental skill for anyone who works with electronics. It's a basic ...
R1 and R2 set the output voltage (0.6 volts across R2 gives about 8 volts across R1). He put in an emitter resistor just for good measure. Same for the series resistor from the source. Charles words, “I don’t know how believable these results are but it looks pretty darned good!”...
Everything You Need to Know to Choose the Right Resistor for Your First PCB Design Project Planning to embark on your first PCB design software project? There’s a ton of components that you’ll end up using, but none can beat the infamous of them all – the simple resistor. If you ha...
the LED will be seriously damaged by this EOS. To prevent this from happening, it is good practice to use power supply with short circuit protection and equip the LED board with a diode in parallel to the LED string in reverse polarity. If the power supply is connected to...
The resistance of a resistor isn't constant, even if it's a certain material of a fixed length and area: it steadily increases as the temperature increases. Why? The hotter a material, the more its atoms or ions jiggle about and the harder it is for electrons to wriggle through, which...
The resistor value indicates the resistor’s resistance in ohms and is an important value to know. A working resistor’s value can be measured using an ohmmeter which may be function that moderndigital multimetersare equipped with. However, if the resistor fails and is burned, you may not be...
The charge has to work hard to move along, which heats up the filament, causing it to glow. In building wiring, the hot wire and the neutral wire never touch directly. The charge running through the circuit always passes through an appliance, which acts as a resistor. In this way, the...