berkeman's latest activity

@stephen h -- we definitely want to help you in your learning. Please start a new thread with links to your reading about your...

Yeah, it's a couple levels down to figure out the issue. I remember doing this search a few days ago to figure out the comment.

Make sure the problem isnt with you. By you, I mean, that its your natural ability and or effort which is impeding your lecture and not...

How did you fix it? Was the damage obviously from ice expansion bursting the pipe? If so, was the pipe clogged so not free-flowing to...

Since the OP has not responded to this, we have changed the level of the thread discussion to "High School".

Yup, for the last 15 years

There are many other factors involved in selecting the switching frequency. I guess this would be a good description of the maximum...

Ionospheric reflection is measured by ionosondes, that sweep from about 1MHz to 15MHz, at a rate of about 100kHz per second...

As per NEC if electric lines and water lines are in the same ditch there is to be 2 ft. of separation. I'm not a double E but was an...

I call it 'Quantum Eraserclam' - a central tenet is that you don't question how I get my numbers or whether or not they are correct...

Is it possible your old tires featured ContiSeal? ContiSeal is a technology developed by Continental designed to seal a damaged tire...

What are your L and C values and what is the switching frequency? What duty cycle would an ideal boost converter need to run at for...

Your specs assume 100% efficiency, which will not be possible. The best you can do will be about 95%.

I am older/less young than the poster, and have been receiving answers from the wonderful people on this forum for many years for my...

You mean boost converter there, right? That's what you've shown and you mention boosting the input voltage to make the higher output...