Questions tagged [drive]
The drive tag has no usage guidance.
44
questions
7
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371
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Design of very long serial signal systems
In the current case there is a single signal conductor, tens (hundreds?) of meters long, which serially connects door and window sensors for a whole building. The sensors are simplest possible ...
0
votes
1
answer
88
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BLDC six step commutation table confusion
What is the reason why there are many different six step commutation tables on the internet?
No1 table
No2 table
Table reference: "https://lucidar.me/en/actuators/commutation-for-bldc-motors/&...
- 27
1
vote
1
answer
30
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single phase into vfd
I have a three phase in three phase out vfd which is rated for 230V. I would like to use it to power a three phase motor. The manufacturer of the drive states it will run from a single phase input, ...
1
vote
2
answers
114
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Which part on the circuit board has the software or firmware? [closed]
I am having difficulty to locate which part holds the firmware or software to make the board function properly. The board is used as a control for a 375 kW drive. I replaced the board with a new one ...
- 11
2
votes
2
answers
256
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Is Modbus suitable for motion control positioning?
I need to issue position setpoint commands to a servo drive 50 times/sec. The drive will be responsible for closing the PID loop, etc, while the motion controller I'm developing will handle generating ...
- 743
0
votes
0
answers
53
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LTspice induction motor model
I'm trying to simulate the dynamic model for induction motor in (alpha, beta) stator axis.
Results are not correct but I don't know how to fix this issue. How can I fix them?
Code:
...
- 1
0
votes
1
answer
200
views
What's the Purpose of pin 44 on IDE cables
So I was looking at the pinout for 44 pin, notebook type IDE cables, and the 44th pin is listed as /TYPE : Type (0=ATA), what use does it have?
2
votes
1
answer
188
views
Turn on/off a LED using a D-FF and a transistor
I'm trying to control a LED using some microcontroller and I designed a circuit using a D-FF and a transistor to handle it. It looks like this:
So I can control when to turn it on or of by simply ...
- 21
0
votes
0
answers
56
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Single FET DC motor drive
I have a requirement to design a bare bone, inexpensive 90 v 700 W reversable DC motor drive. I have attached the schematic showing the drive components. The prototype works well at speed, but ...
- 1
0
votes
2
answers
108
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Does max OP Amp Capacitive Drive Capability Matter with Active Filter?
I know that every OP Amp does have a limited capacitive load drive capability.
Even if not specified, it is always a good practice to use a series isolation resistor.
Anyway; when looking at an active ...
- 115
-3
votes
1
answer
73
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Cascading opamps to drive a MOSFET [closed]
I suppose, this is a continuation of this question: Parallelizing opamps for higher precision
For the moment I'm leaning towards cascading opamps by implementing a Composite Amplifier, albeit a lazy ...
- 409
2
votes
2
answers
303
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How to implement the design of a bidirectional buck-boost converter?
I need your help in designing a bidirectional buck boost converter with the following requirements:
Input voltage: 100V-400V
Voltage range: 250V-1.2kV
Output current: 40-80A
Power dissipation of 24 ...
- 39
1
vote
1
answer
266
views
Clock out drive strength - Current
In the datasheet of this IC, what is the benefit or purpose of having 12mA and 16mA drive strength for the clock output pins?
What is the purpose of having 2 drive strength values for the clock?
Is it ...
user220456
0
votes
1
answer
350
views
Is a change-over-switch with a VFD dangerous?
We are using a variable frequency drive (VFD) with a compressor. We added a rotary cam changeover switch (600 V/50 Hz, picture is attached) in between the compressor and the motor. The purpose of ...
- 75
0
votes
2
answers
722
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How do DVD players know how fast to spin?
Not sure if this is the right place to ask this, but here it goes: Different optical discs have different rotational speeds, based on the size of the pits and the bitrate. Newer disks have smaller ...
- 199