Recent content by 1MK5

Hi Sophiecenteaur and digoff, Thanks for all of your opinion =) Alright, my application is electrokinetics in which I am trying to control the movement of a particle suspended in liquid media (both are dielectrics). Hence, you can expect the impedance of the system to be quite high...

Hi Sophiecenteaur, Well...I know that I can control my F Gen directly via PC...but, this method is too slow...so that's why I am thinking of modulating the output with the help of a relay. Hence, what I need is to find a relay that (1) can be controlled digitally (via FPGA in my case), (2)...

Hi Sophiecentaur, I see, do you mean those high frequency components which usually appears at the ON/OFF transition? If this is what you mean by splats, I guess I am not too worry about them for my application now. =) Cheers, 1MK5

Hi Sophiecenteur, Thanks for your response. Yes, basically what I would like to from the relay can be summed into these requirements: 1. Controllability via FPGA (TTL, etc) 2. Switching speed 3. Ability to handle high voltage sinewave from the F Gen (sinewave 500 V, f 100 kHz) Although, I...

Hi mdjensen22, Thanks for your your very quick response. I am trying to build an application where the output of the function generator to be switched ON/OFF automatically with a very high speed. I know that I can turn ON/OFF the F gen directly by using a PC. However, this method is very...

Dear All, I have a task at hand to design a controller circuit to modulate ON/OFF a high voltage function generator (sinewave 500 Vpp, f 100 kHz) via a relay. I have never handled a relay before, and I am positng this question here to ask for your kind help to give me some suggestions...

Hi everyone, I am posting this thread just to find some information. I have a science project which try to make a compact directional sound for detecting movement. Now, the electronics which my group is developing is on a small PCB board (approximately 5x5 cm) I am wondering if...

Hi Chemistree, Sorry for the late reply. Kinda busy with my experiments recently Thanks for your help. :smile: So, you think that unreacted carboxylic functional group might be the cause why I get so many non-specific binding (NSB)? I was thinking more in the line of...

Hi chemisttree, Thanks for the reply. I have done some standard carbodiimide linking chemistry (NHS+EDC) to attach the biomolecules to the CNT (my carbon nanotube has carboxylic functional group) Cheers, - 1MK5-

Hi everyone, Just wondering if anyone in the forum have any experience in carbon nanotube field-effect transistor biosensor? I have a real head ache on how to overcome non-specific binding in this device. And I am wondering if someone would be kind enough to give some suggestions...