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stepper motor tops out at certain frequency
The same piece of hardware is used for other stepper motors and they are working fine. The only difference is the driving freq and the load. For this application my target freq is rather high.
If i take away the load, the motor can achieve my target...
stepper motor not moving
Hi guys, i'm trying to drive a stepper (half-step) at a rather high frequency (8kHz) by ramping it up.
I was told under load, there are certain 'harmonics' or frequency range which the stepper would just stall and refuse to drive.
Is this true? Can someone explain...
inrush current limiting
Hi guys, it's been a while since i last posted. How's everyone? I currently have a problem which i hope you guys can comment.
I have an application where i have a simple DC motor running at 24V (turned on for only 1 second). This motor switches a small load from A to B...
sram transistor sizing
How do i proceed with transistor sizing analysis? I've finished the schematic and simulation, and it works perfectly.
Now i need to determine the w for each of the transistors. How do i proceed? What are the convention and ratios?
I'm using TSMC 0.35 technology.
6T SRAM
Thx for the design rules.
How about transistor sizing? I do not know how to go about it. Where should i start?
I've read Rabaey's book and it seems for 6T SRAM, the whole idea about sizing is such that to prevent the potential at Q to flip the other inverter for both READ and WRITE...
Hi guys, i am to design a 6T SRAM cell based on TSMC035.
Where can i find 'design rules' or guidelines for TSMC035? Such as the distance (lambda) between metal and poly etc.
I'm still very new to this, so i need help. Thanks guys.
I want to load an array containing a series of values which i want to insert into the Simulink AWGN block's SNR parameter.
What i want to achieve is for the model to calculate the BER for a series of SNR values.
How do i achieve this?
spectrum scope simulink
Attached is the output spectrum of my OFDM transmitter.
At the x-axis, the unit is in Hz.
How do i increase this into the order of 6 ie Mhz?
S-function
I have a M file with the codes of my channel transfer function (multipath). My
transceiver model however is built in Simulink.
Is there a way to simulate my transceiver with my transfer function
without any S-function programming? I'm close to my due date and this
instruction was...
I need help building an ethernet PHY module to communicate with a MAC. It uses MII interface.
I am only able to build with a 2 layer PCB. I need guidance from anyone with experience. Thank you.
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