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0answers
23 views

portable transistor radio [closed]

I recently bought a cheap (@ US$7) transistor radio, with an FM band, an AM band, 4 SW bands, and 2 VHF (tv audio) bands covering channels 1 to 13. However, i later discovered that i couldn't tune in ...
0
votes
1answer
91 views

How do operational amplifiers work, exactly?

Can you offer a website or pdf where I can understand how we can calculate current, voltage,etc. in an operational amplifier and how it works exactly (the direction of the current, feedback,etc. )?
1
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2answers
73 views

Transistor Series Regulator

I am in the 6th week in Navy school and we are on voltage regulators or circuits that have components that maintain a constant voltage output. I need an explanation on how to work out this problem ...
0
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2answers
93 views

Can a CPUs speed be increased by (physically) upgrading the CPU clock?

I don't know much about CPU operation, but I'm learning. I read somewhere that making a CPU work faster is as simple as increasing the clock speed (one method among many), and that the real limiting ...
0
votes
1answer
30 views

Depassing 15V on Operational Amplificator?

So in the book it says we can obtain the following relation using negative feedback (Out Voltage)=1+ R2/R1 (In Voltage) The out voltage can depass +15 V , How can this be possible?
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2answers
49 views

What is this circuit gain when set is in [0,1]?

When set is 0 or 1 I could find it. It either attenuates by 10 or amplifies by 10. However, the circuit becomes different when it is between 0 and 1.
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0answers
29 views

At higher speed? [closed]

I am running at higher speed settings only one of my motors runs. When I lowered my steps per mm in marlin the issue went away. Do you guys think it could be a current issue or a motor issue? Thanks ...
1
vote
1answer
35 views

Parametric PSD window to data

I have question abouth parametric spectrum density (PSD) estimation using Yule-Walker (autocorrelation method) equation, which relays on autocorelation: And it's mention: "However, since the ...
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0answers
53 views

Can bad Bypass diodes in solar panels cause drop in amperage? [closed]

I had 6 panels at home they worked well for a few days but today the amperage dropped suddenly the voltage is proper but can't get the right amperage from cells can a bad bypass diode cause this ...
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0answers
23 views

DSP for 200 MHz signal with ability to install linux and ethernet support [closed]

Suppose we have 200 MHz signal, that we need to process and send the results of the processing over the Ethernet. I know basics about DSP and FPGA. I've worked with some cortex m4 microcontrollers ...
2
votes
3answers
119 views

Is single ended amplifier a subset of differential amplifier?

The reason I'm asking this is that when I read about CMRR issue in amplifiers I only see differential amplifiers as if it is only a diff. amp. issue. But isn't a single ended amplifier also a ...