Questions tagged [linear]
The linear tag has no usage guidance.
272
questions
1
vote
4
answers
509
views
Possibly unstable output of linear power supply due to very large current amplfication
I'm designing a linear power supply with an op-amp as error amp and a Sziklai pair as output stage as a hobby project (see schematic below).
I'm worried, that the output Vo will be unstable/...
- 13
3
votes
2
answers
585
views
Mosfet thermal problems in linear applications
Modern power FET's can be unreliable in some linear applications due to thermal instability causing die hotspots and premature failure. This is called the Spirito effect. How do Silicon Carbide ...
- 15.2k
0
votes
0
answers
188
views
Switching Power Supply Crowbar
In our lab we have a large fan on an instrument which works fine on a linear power supply but on a switching power supply the supply crowbar even when it's current limit is well above the operating ...
0
votes
1
answer
157
views
Switching between ac-to-ac transformer taps in regulated linear voltage power supply
I am new to electronics and working on building regulated linear bench power supply 0v to 30v, 3A as my first project.
For better performance, wanted to switch between multiple tapas of ac-to-ac ...
2
votes
6
answers
986
views
Prove that in a *nonlinear* circuit, adding resistor between equipotential terminals draws no current
If a circuit is linear, then you can use Thevenin equivalence to prove that if a port of a circuit has an open-circuit voltage of 0 V (the two terminals are at the same potential), then the resistor ...
- 675
0
votes
1
answer
133
views
Is HP 6623A Linear or Switching power supply?
I have an HP 6623A DC power supply and i wonder if its Linear or Switching power supply.
I see in the manual it says linear, but i still wonder.
Why i am asking:
I am asking this, becouse after ...
- 3,404
0
votes
1
answer
146
views
two-port networks with voltage sources connected on ends
Suppose we have a two-port network. Then, we connect voltage sources V1 and V2 to the left and right end. For the transmission parameters, t11=V1/V2, then could one use the voltages given by the ...
- 263
0
votes
1
answer
75
views
Positive Voltage on inductor
I am doing some problems in linear and nonlinear circuit analysis, so I have a question...why is the voltage on an inductor represented as \$V=L\frac{di}{dt}\$ instead of \$V=-L\frac{di}{dt}\$, I know ...
-2
votes
1
answer
87
views
DC motor remote control with one push [closed]
I am planning to use 2 actuators as a gate opener. The linear actuators are hooked to a DC motor controller, with remote, so I can open/close the gate by either press and hold one of the two buttons ...
- 15
1
vote
0
answers
44
views
Linear systems, causality input-output
I have been preparing for a midterm and my professor posted a sample midterm but no answers, i solved the question here and asked him if it made sense, and he said the answer will be fully correct if ...
- 536
1
vote
0
answers
55
views
Linear system question
I have been struggling with this linear system's question. []
I have arrived at a solution, but i do not think my solution makes sense.
- 536
-2
votes
1
answer
169
views
Changing the second order tansfer function to the standard form
I want to change this second order transfer function to the standard form to obtain tp, Mp and,...how can i change this to standard form?
0
votes
0
answers
163
views
Controlled solenoid stroke length
Let me create a scenario to better illustrate the problem
I have 1500 pens that I want to individually actuate upwards with 3 different distances, ex: 10mm/15mm/20mm
I thought I could use a solenoid ...
0
votes
0
answers
243
views
Subtractor using op-amp
I need to create a subtractor on LT spice using an LT1028A to emulate the difference between 90V and 23V; resulting in 67V. I have tried using a variety of resistance pairs, but in vain. Could anyone ...
- 23
0
votes
0
answers
91
views
Traveling magnetic field
I'd like to do some experiments with a traveling magnetic field. To start with, I'd like to create a traveling magnetic field with a set of coils and try to propel an aluminum sheet. A basic model of ...
