7,760 reputation
11330
bio website embedinc.com/olin
location Littleton, Massachusetts
age 58
visits member for 2 years, 3 months
seen 9 hours ago

Electrical engineering consultant specializing in microcontrollers and the circuitry around them. Master of engineering in EE from Rensselaer Polytechnic Institute in 1980.

We are certified Microchip design partners, and have been in the top catagory consistantly since around 2000. Various free downloads related to developing PIC firmware and other things are available at http://www.embedinc.com/pic/dload.htm.


Oct
28
awarded  Good Answer
Oct
28
awarded  Nice Answer
Oct
27
answered Why would the lack of air in a mine in an asteroid prevent you from flooding it?
Oct
26
answered Is there a limit to the frame rate achievable with a high-speed camera?
Oct
26
revised Greatest and Least Resistance and Current Characteristics of Parallel vs Series circuits
added 152 characters in body
Oct
26
answered Greatest and Least Resistance and Current Characteristics of Parallel vs Series circuits
Oct
26
comment Greatest and Least Resistance and Current Characteristics of Parallel vs Series circuits
*"parallel has the greater resistance than current as parallel wiring if thought as water pump tubes has greater resistance during water flow". Huh? This gibberish makes no sense. We speak English here.
Oct
18
comment Spherical mirror ray diagram question
@TuP: What you are talking about is a approximation, useful only for spherical mirrors over small angles. A small piece of a sphere approximates a parabaloid well enough for some purposes, like a shaving mirror for example. For such small patches of a sphere, rays parallel to the axis get reflected so that they pass close to r/2. The bigger the angle of the spherical section, the more the error. To eliminate this error, the shape has to be parabaloid.
Oct
18
answered Why the EMF of a battery doesn't depend on distance between the two electrodes?
Oct
18
comment Spherical mirror ray diagram question
@TuP: Then you were taught badly. Or more likely, you misunderstood something.
Oct
17
comment Is a flow of ionized water an electric current?
@nonex: Ionic doesn't mean net charge. In fact, most things that are composed of charged ions have them in roughly equal opposite numbers. If they didn't, a net charge would build up, which would create a force that would migrate the imballanced ions back to equillibrium.
Oct
17
answered Is a flow of ionized water an electric current?
Oct
17
answered Spherical mirror ray diagram question
Oct
17
awarded  Pundit
Oct
17
comment What causes ballpoint pens to write intermittently?
@aitch: Yes, these pens do work better when warm. There is a marked difference between a pen that has been in a car in the cold of winter versus getting baked in the sun in summer. This appears to be because warmer ink is less viscous.
Oct
16
comment Can we double the electric energy?
@Abhis: As I said, it is quite possible to make a higher current out than in, so it's hard to tell what the point of your comment is. I even gave a example with 10 A in and 68 A out. If this is all you are after and both input and output are AC at the same frequency, then a transformer would be much simpler and can be made more efficient for the same cost.
Oct
15
answered Can we double the electric energy?
Oct
13
answered why is the force on the side of a very narrow tank independent of the volume of water?
Oct
13
comment How would gravity change on a planet rotating around itself very fast?
Your last paragraph is incorrect. It makes no sense to talk about a "centrifugal force" without specifying a mass, which was never mentioned. You then compare that force to accelleration in the last sentence, which is wrong again. Either pick a example mass and use force consistantly, or probably better, stick to accelleration.
Oct
13
answered How would gravity change on a planet rotating around itself very fast?