Hello Forum,
if we take a silicon solar cell, the open circuit voltage is about 0.5V.
the current increases as the solar cell area and illumination increases.
But the 0.5 V output voltage does not change as the area and illumination level vary...Why?
It must have something to do with...
Dear forum,
in a diode semiconductor, the N region is rich in electrons. The P region is rich in holes.
Is the number of extra electrons in the N region equal, larger or smaller than the number of holes in the P region? If so, why?
Also, in the N region, it is said that the majority...
Hello Forum,
Battery chargers are devices to put energy into a secondary (rechargable) bttery by forcing an electric current through it. The charge current depends on the technology and capacity of the battery being charged.
The capacity of a battery represent the amount of electric charge...
Thank you!
Is the IP camera acting like a server, since it is providing content to another computer on the internet?
To be a server, does a system always need serving specific software?
thanks,
fisico30
Hello Routaran,
I have heard that the camera works well with IE but not well with Fixefox or Chrome...
Not related to bandwidth this time...
Thanks,
fisico30
Hello Forum,
I have heard of current operating devices, like LEDs, and voltage operated devices...
What is the difference?
It seems to me that all electronic devices, once provided a certain voltage, draw the current they need...so what is this distinction between current operating and...
Well, the max power transfer theorem implies impedance matching. When we impedance match load and source we are surely splitting the power 50%, but that 50% is a ratio.
Example: no impedance matching, most of the power (99%) is given to the load but that is 99% of little total power. If...
Hi Sophiecentaur,
"you'd be wasting half the power you generated".
I think the correct statement would be that we would be wasting half of the maximum amount of power we can generate.
"Solar cells are interesting because they definitely don't have a low internal resistance and, to get...
Hello Sophiecentaur
The reason that power supplies are usually sources of voltage with low source (internal) resistance is because they dissipate very little power internally over a massive range of supply currents.
Ok, I see that: the power sources does not consume too much power if the...
Thank you.
It does not seem a complicated device...maybe something is drawing current and discharging the battery too fast...
hard to tell.
thanks
fisico30
Hello Forum,
I have an IP camera that has some amount of LAG from when the movement occurs to when it shows up in the browser.
What causes that? If I bought a more expensive camera would it the lag disappear?
the camera works well with Internet Explorer (remotely). but It is terrible...
Hello forum,
I have a ceiling fan with a remote control. The battery dies too quickly. There is only one IC in the little circuit board. I would like to understand where the issue is.
Can I do that with a voltmeter? But where would I look? What approach? Where would I measure the voltage to...
thank you.
But consider the two cases:
1) a molecular compound
2) a polymer
both are made of molecules connected to each other. some explain the polymer with the necklace analogy: the necklace is the polymer and the beads are the monomers (molecules). These necklaces are connected...
hello forum,
I am trying to understand what a port is.
Each device on a LAN is assigned an internal IP address. Does each device also have a port?
In some situations, like setting up an IP camera, we need to specify the port number. In other cases we seem to not worry about ports...