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Need help to build a momentary switch [duplicate]

So I´ve this scenario: Need to close a push button for a lapse of 500ms when 5V are detected and when this voltaje detected (5V) disappears, need to close the same push button again for another 500ms. ...
WTF Rules's user avatar
0 votes
0 answers
120 views

Having a hard time understanding discrete audio amplifier output stage error corrector circuit, how does it work?

I'm trying to implement a circuit I read about in a book recently, but having a hard time deriving the relationships for the required impedances for error corector balance. Here is the circuit: The ...
drinkingCube's user avatar
7 votes
3 answers
738 views

Identifying transistor topology in discrete phono preamp

I try to understand how preamp of Bozak CMA-10-2DL works. Can someone please help me identify what kind of topologies transistors Q1, Q2 and Q3 are forming? Is it active or passive phono preamp? Seems ...
cubix's user avatar
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0 answers
131 views

Controls - seeing if a discrete time system can arrive from a certain input to a certain output

Given a system: $$A = \begin{pmatrix} 7 & -3 \\ 18 & -8 \end{pmatrix} \quad B = \begin{pmatrix} -2 \\-6\end{pmatrix} \quad C = \begin{pmatrix}1 & 0 \end{pmatrix} \quad D =0$$ I need to see ...
Piratemetaldrinkingcrew's user avatar
2 votes
3 answers
132 views

Review my power MOSFET motor control circuit - rev5

Software engineer dabbling in electronics here. With feedback from the previous iterations, I think I have something I can put on a breadboard without putting silicon particulate matter into the air. ...
cmc's user avatar
  • 267
0 votes
0 answers
95 views

Nyquist stability criterion in discrete time domain

I've been transforming systems from the s-domain to the z-domain, and looking at the Nyquist plots I get in the z-domain. So far I've assumed that the Nyquist stability criterion that applies in the s-...
Mr Phase Locked Loop's user avatar
4 votes
2 answers
192 views

Converting PMSM motor differential equation to difference equation/discrete-time implementation

I am researching about sensorless control of PMSM, and currently looking at how to implement the algorithm into code. From this link Module 9: Position Observer (Part 2/2). I encountered the equations ...
Dinh Thong's user avatar
0 votes
1 answer
182 views

Understanding this MM/MC discrete phono stage

I am challenging myself at understanding my integrated amp's MM/MC phono stage; The amp is a Rega Elicit mk. I. It is a somewhat complex design and as a hobbyist I'm out of my league. The circuit ...
Joe's user avatar
  • 199
0 votes
2 answers
305 views

74HC373 Shift Register?

This is my first attempt at designing a discrete digital circuit. Basically I'm looking to count the number of times a button is pressed. Each button press will trigger a new output. And the final ...
Aaron Butkovich's user avatar