Tagged Questions
0
votes
2answers
119 views
Electron flow due to impedance?
In the basic electronics lecture today not only I but whole class became confused by an explanation of our teacher that in high impedance value electrons movement become easier while in low impedance ...
8
votes
2answers
529 views
Is this resistor needed in this opamp circuit?
I'm looking at the datasheet of the MCP6241. There's this schematic:
The op-amp has a input bias current of 1 pA, and \$ 10^{ 13}\Omega\$ input impedance. Is resistor Rz still needed then?
2
votes
2answers
353 views
How can I meet these PCB design conductivity/isolation requirements?
The specifications required are as follows:
The resistance between ground pins on a connector and the case (chassis) ground should be less than 3 Ohms.
The resistance between any other signal on the ...
4
votes
1answer
274 views
What is the physical meaning of resistance and power ratings of a loudspeaker?
What exactly does it mean when it is specified that internal impedance (or resistance?) of a loudspeaker is 16 \$\Omega\$? Is that ohmic resistance of the copper of its internal winding? Or is it ...
9
votes
2answers
1k views
Resistance Vs Impedance?
What is the difference between the Resistance and Impedance?
When we will say it is an Impedance and when we will say it as an
Resistance?
Can you explain it with diagram (If possible) and real time ...
3
votes
1answer
172 views
Can Z (impedance) have an φ of -105°?
Given a simple circuit with one voltage generator and one other circuit element, if these values are given:
U = 200 ∠ -45° V
I = 5 ∠ 60° A
(both values are phasors - I just don't know how to ...
9
votes
1answer
996 views
How do you calculate the noise of an op-amp circuit?
I think I know how to do this, but you can find a lot of different instructions and calculators online that contradict each other. I have yet to find a clear, concise procedure for calculating the ...
