Why does an inductor cause current to lag voltage? Doesn't a conductor need to have current running through it while it is passed through a magnetic field to produce an opposing EMF?
Since I've no experience with buzzers, if there are any good ways to choose the right resistor and npn. By the way, I'm using STM32's MCU, supplied with 3V1 to drive a buzzer (GSC4417YA-16...
Hi all, I need to control the speed of a handful of small pumps independently. The speed is directly related to the voltage supplied. I can't really use pwm and the voltage to the pumps must...
I'm building something with an arduino nano which uses 8 buttons (digital) and 8 potentiometers (analog). I would like to add more inputs to the build, but need to be able to use multiple inputs a...
1. Some people say that capacitive reactance cancels out inductive reactance, so the impedance of an LC circuit is 0 Ω to its resonant frequency (not accounting for wire resistance).2. Others say that...
I'm playing with a 6AR6 design right now running at 400V B+, and am worried about damaging the 300v max input triodes. The operating point is closer to 150, but ofc they will be exposed to the ful...
I am going to make an arduino project which uses a 0.5W speaker, attached to PAM8403(3W amplifier). Can I directly connect them or should I use a resistor?
Hey guys! I'm making a digital power logger and I was wondering if I should add a linear regulator after a switch-mode converter to make the signal less noisy and more stable or should I stick to ...
I have a power supply that provides +36V DC and -36V DC to power the amplifier, but I also need to supply positive and negative voltage to op amps (in an active crossover before the amplifier). Should...
