Hi all,
A simple question..... If I have a 100Psi air pump (Pump # 1) & i enclose that pump in a sealed enclosure held at 100Psi. What pressure should i expect out of the enclosed pump if i am measuring the output pressure at atmospheric pressure level? Will it be simply 100Psi or...
Hi all,
I am soon going to be working on AFib project and would like to know of any techniques used which are within the bandwidth of low power embedded CPU like MSP430 etc.. ? Is Digital filtering the only option or there are other approaches ? I conceptulized another one using...
Hi all, I am seeing some unwanted signals in the recording . I have done many stability analysis including Bode plot but the amplifier seems not to have any problem. See attched schematic and plots. Can anyone please tell me if they see any issue with this setup? Is gain of less than 2 on stage...
Hi all,
I am looking for 8 or 6 digit 7 segment LCD with Blue or similar coloured backlight. Does anyone know of the source? Graphic LCD is not the solution at this stage of the project while character have small letters !! ..I am currently using LCD LCD-S801C42TR driven by two ICM7211A...
Hi all,
I have a situation here...I am trying to do some very precise frequency counting. I am trying to use 74VHC4040 in the design at 250MHz with gate charge dissipation resistor to ground (47Ohm) at clock input.will that work? 74VHC4040 spec sheet says Fmax=210MHz...Has anyone used...
Hi all,
I was wondering what techniques do you guys use to check the stability of low frequency , very high gain AC coupled amplifier made using Opamps? I ran some simulations for Pole-Zero analysis and the simulator gave output in the form that i never expected....It says "Imag" over Y...
Hi All,
Does anyone have experience using MSP430F149 controller in your design?? I have couple of questions..
1) Is it ok to use External clock with this device ??
2) Why would a commercial crystal not work with this device (one is drive level)?? I tried loading with different...
Hi All,
Has anyone dealt with FT245BM like USB phy layer chips?? I am having problems in a freshly designed prototype. The website says things very simply and drivers and the EEPROM software has too many problems settling down without success . Here's what happens
1) As soon as i...
Hi all,
I have interfaced MSP430F149 microcontroller to a standard TTL gates. Do you guys see any problem with that besides reduced noise immunity?? The VIH (L) for the gates is 2.4V and output from controller should step around 0-3.3V. I am doing this to avoid any use of translators...
Hi all ,
I have a unit that consumes 3A at 12V. It is delivering high voltage pulses with following numbers
4 channels
100mA max drain current into 4K load .
Max pulse width is 1mSec .
100 Pulses per second per channelx 4 = 400 Pulses
So i calculated as
(100mA)2 x...
Hi all,
I am trying to achieve digital control of a DC-DC convertor via microcontroller and DAC. I need variable DC supply from 0.7V to 12.2VDC with current from 0-530mA...The idea is to achieve varible output voltage set through microcontroller and DAC for above spec....I tried Power...
Hi all ,
Does any one have experience playing with LT1606..16 bit ADC from Linear Tech... The question i have is for adjusting the reference so that my fullscale swing is +/- 2V. The data sheet does not affirmatively say anything about it. It just says that Full scale voltage is 4 x...
Hi All,
Want an input from all you guys.. What is the most preferred way of getting the 1st prototype PCB..... I have few ways i do it...But would appreciate inputs from all you people...
1) Start building the design on General purpose PCB
and go on trimming your design for...
