technical interview Q & A for high-tech professionals
Interview Questions
Electronics Hardware
Computer Software
Quick Thinking Tests
General questions
Phone screening questions
Submit your Q or A

Technical articles
Technical discussion
Resume and interview
How to get a job in Silicon Valley
How much are you worth on market?
Do you need an agent?

Break point
Written Exam
Logic Tests
Professional Test
Tomato company
Cup of coffee
How stock market works
Engineering jokes

About Hitequest
About Hitequest
Home page


 =Brainstorming technical problems= 



Q: Question to power supply experts... by vball13.
I need to build a test bench for a chip. The chip has a block that when enabled draws 1.6A from a supply during 5nS. The problem is I need to put 20 chips on the test board. Any suggestions?

by alster.
I think you may get away by using a decoupling cap. The cap should supply energy during the 5ns current spike.
Let's see if we can get the value right.
I = C*dU/dt
I=1.6a , t=5nS , U=10mV (I think it's a reasonable number).
Then C = 1uF