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Hello,
I recently had my midterm and my professor asked the following question:
Design the electronics for an RMS voltmeter that uses a microcontroller. The voltmeter must be able to function as a standalone system or as a module of another system.
Apparently, this is a very common interview...
Hello for the I/Q modulator, Once an RF signal is obtained from the direct upconversion. Are the upper and lower sidebands equivalent to quadrature and inphase respectively?
Hello,
I know the 'g' means the magnitude of acceleration. However, when do I use 2g, 4g, 8g, or 16g? Also what do the units mg/LSB mean? How does the conversion work?
I apologize if this is a stupid question. I can't seem to find a good explanation anywhere.
Thanks.
Hello,
What are some alternatives to Lithium-ion batteries? I'm using a Lithium-ion battery to power a device. However, I don't want to deal with issues of possible explosions. How can I navigate that? or better yet, what are some alternative batteries? Voltage range is about 3.3Volts - 5Volts...
Hello,
I'm having a hard time getting a quality description about the differences between analog control and digital control for DC-DC converters. I know the Digital control is now the new way to go as far as control and its ease of implementation with microcontrollers. Can someone please give...
Hello,
I implemented a buck converter via two feedback control; a pid controller and another one that i wrote. I am trying to figure out how to compare the two controllers? how do i go about calculating efficiencies of both feedback control systems? as well as any other thing that needs to be...
I'm trying to implement a boost converter like the one found here: Boost Converter Intro with Arduino « ReiBot.org. a PID controller is used for the control.
I don't know how the tuning parameters can be obtained. I've read various documentations but none of them seem to provide information as...
thanks. I've read a lot about boost converters in the last few days but none of the papers ever said how to choose the switching frequency. Do i just make an educated guess? I thought Toff was that of the mosfet; hence my reason for using 55ns which then made the frequency really high.
Also...
Hello,
I'm trying to make a boost converter that will have a digital pwm control feedback that will be implemented with microcontroller. However, before I get started, I'm having a hard time figuring out the switching frequency.
My main requirements are Vin = 12 V; Vout = 30Volts.
In order to...
Hi,
I'm looking to implement a dc-dc converter using a PFM control technique. However, I can't find much literature on this. Can anyone kindly provide a few good explanations. I'm trying to implement this via C language so I need as much information as possible.
Thanks in advance.
I'm not sure if this is the right forum for my question. If it's not, I ask that I be kindly pointed in the right direction.
I am a student and I will be working on a project during the Christmas break. Unfortunately, I don't have access to a scope and I am wondering if someone can tell me...
Hello,
I know that the PID feedback controller has been done via arduino. I'm not that well knowledgeable in controls and I am wondering if there are other good alternatives to the PID controller. I want to see if I can program those too.
thanks in advance for your help.
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