Questions tagged [math-notation]
The math-notation tag has no usage guidance.
0
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1answer
31 views
Notation for switches in ladder notation
I was reading https://www.allaboutcircuits.com/textbook/digital/chpt-10/monostable-multivibrators/,
and at the bottom of the page it has
I read their page on switch notation, but it did not say what ...
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3answers
4k views
Do square wave exist?
If we send a square waveform through an antenna, will we get square electromagnetic waves with electric and magnetic fields looking like squares?
Also, since there is an abrupt/almost jump in ...
1
vote
1answer
84 views
How to convert A/m to dBμA/m?
Lets say I have -2 dBμA/m as a limit.
How do I convert the magnetic field strength in A/m to dBμA/m? Is it as follows?
$$20\cdot \log(\frac{ |H| }{10^{-6}})$$
Thank you!
0
votes
1answer
291 views
Complex reactance formula explanation
Can someone explain the math behind the following relationships between the equalities in a capacitor's reactance?
$$X_C = \frac{1}{2\pi f C} = \frac{-j}{\omega C} = \frac{1}{j \omega C}$$
For ...
1
vote
1answer
115 views
What notation is this? (Boolean/Logic Function)
I've come across these questions. What notation is being used in the 2nd and 3rd question?
Thanks
0
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1answer
86 views
DT Ramp Signal Summation Notation Help?
I cannot understand how the summation range has changed via substitution of m.
EDIT:
Full problem with solution (for context):
23
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5answers
20k views
What is a “100R” resistor?
Sometimes I see references to "R" resistors. For example:
Obviously the 100 refers to 100 Ohms. What does 100R mean?
0
votes
1answer
71 views
negative powers 8051
I am attempting to create a calculator using Keil C51 compiling for a DS89c450 target device, but I have run into an obstacle with regards to negative powers. The compiler keeps returning errors when ...
12
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3answers
5k views
V/I uppercase/lowercase convention?
Is there any standard in industry for using uppercase or lowercase for V and I in circuit diagrams? I ask this because my book seems to switch back and forth between the two without any rhyme or ...
0
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2answers
99 views
Algebraic Notation for Circuits
When dealing with a circuit diagram of some type, a fairly typical procedure for simplifying the circuit is to redraw the circuit diagram a number of times, each time performing one or more ...
