Mohsen Fahmide

10 Questions 32 Answers 0 Followers

Questions related from Mohsen Fahmide

What is Basic Electronics Book?

I need basic electronics books (diodes,transistors,current..etc) as I am just starting out with electronics and want to have something to read over the holiday

05 May 2015 4,224 5 View

Are Relays reliable for long time use?

I am developing a Home automation project in which i'm using relays to control appliances. I need to control devices of rating 220v ad upto 6amp. So, my question is can i use relays to control...

05 May 2015 5,282 9 View

How much does it cost to have a custom ASIC made?

have browsed several ASIC manufacturer's webs, but I haven't found an actual number. I assume there would be a fixed cost associated with creating masks and such and then there will be a cost per...

05 May 2015 1,034 3 View

How do I, as a consumer, gain or lose when the utility company line voltage varies from rated value?

A little background; the line voltage supplied here in my part of India varies as a function of the load. At dusk, the measured value is as high as 248V. Household appliances are rated at either...

05 May 2015 4,983 5 View

Why would high-voltage cables have semiconductive layers in their design?

Turns out a high voltage cable can have semiconductive layers in its design. For example here's a rather old patent covering some specific way of producing such cable. This doesn't make much...

05 May 2015 7,719 3 View

What is this object found on transmission lines?

What are the components, circled in red in the figure, on this transmission line ?

05 May 2015 4,324 4 View

Why are consumers located near high-voltage lines typically not connected to those lines but instead are connected through a lower high-voltage line?

A typical grid uses 110..500 kilovolts lines to deliver electricity to substations which lower that to 6..20 kilovolts and then lines with that lower voltage get to consumers where yet other...

05 May 2015 4,133 17 View

What is a decoupling capacitor and how do I know if I need one?

What is a decoupling capacitor (or smoothing capacitor as referred to in the link below)? How do I know if I need one and if so, what size and where it needs to go? This question mentions many...

05 May 2015 4,633 5 View

Choosing power supply, how to get the voltage and current ratings?

Power supplies are available in a wide range of voltage and current ratings. If I have a device that has specific voltage and current ratings, how do those relate to the power ratings I need to...

05 May 2015 3,210 3 View

How to deal with multiple pull-up resistors on modules?

Hi please answer

05 May 2015 6,553 1 View