Collector Definition and 69 Threads

I was wondering what's the main advantage of choosing one over the other, besides common drain having to suffer body effect. How do we determine if a CC is better or a CD is better to use as a buffer?

Iam sorry if it is a very basic question but iam unable to understand this if u take a common emitter configuration of npn transistor the emitter is common to both the input and output terminals and to operate in the active region 1. the emitter to base should be forward biased i.e n and p...

Hello everybody! I was studying stuff about transistor and i got stuck somewhere. In lecture they said that The common emitter is the more likely configuration used to amplify signals because it produces more power than other configurations. But when i tried to understand it clearly if found...

also, i am unsure about the units...are the above ones ok? as in the website had these units [ KWh/m^2/ hello everyone! i know that solar collectors are commonplace in many parts of the world (tho not mine) so this might sound a bit stupid... anyway, i wanted to make (actually build) a solar...

HI, I have his problem on open collector and I don't know how to deal with it: In the figure attached, the first transistor is driven by an output of the MCU, with the goal of turning the LEDs(several in parallel) on and off. Compute the values of R1,R2,R3 required to make the circuit work...

According to this article, a 12 year old kid has designed a solar cell constructed from nanotubes that greatly exceeds the efficiency of photovoltaic panels. http://www.goodcleantech.com/2008/09/a_12yearolds_solar_cell_may_re.php

http://a11news.com/231/raw-solar/ First, isn't this dangerous for birds? Secondly, if someone doesn't aim it just right, could it burn down a nearby house/barn?

Hi there, As part of my A2 physics coursework investigation, i want to calculate the efficiency of an aluminium canister modeled as a solar collector. The basic set up of the apparatus is: - Lamp (40W light bulb) at a fixed distance of 5cm away from the aluminium canister (which is...

Hey guys, was just wondering if you could clear up a fact about NPN transistors. 1. Is this emmiter current slightly larger than the collector current? 2. The reason why the emmiter current is slightly larger is because the emitter current is a combination of the collector current plus the...

I just talked to my sister-in-law in Texas. Her son took an aptitude test recently...his top two jobs (I swear, I couldn't make this up!): 1. Magician, 2. Feng shui designer. I told this to my daughter, for a laugh. She said, "OMG (she is 15, after all)! I think we took the same test...

Hi, I have an electrically-actuated shutter that can be either in the "closed" or "open" positions. I want to use optoelectronic switches (slotted switches with an infrared LED source and photodiode detector) at either end that will detect whether the shutter is closed or open. The opto...

Using a highly sensitive parabolic sound collector, Tom records the frequency of a tuning fork as it drops into the Grand Canyon. He drops the vibrating tuning fork from rest at t=0. He records a frequency of 1887.0 Hz at t=7.880 s. What is the natural frequency of the tuning fork? Use...

Homework Statement Your house requires 2000 kWh of energy per month and you want to power it using sunlight which has an average daylight intensity of 1 kW/m2. Assuming that sunlight is available 8 hours per day, 25 days per month (only 5 – 6 cloudy days per months!) and that you have a way...

I am trying to come up with a way to monitor a device that alarms. The signal is open collector: high impedance when not alarm. I would also like to be able to connect this to a computer and monitor and log the alarms when they happen. Any help would be greatly appreciated.

I'm stuck on a formula I'm using to design a solar water heater at uni (and no, I'm not a physics student, otherwise I'd probably be kicking myself its such a stupid question) and I understand the theory behind it, I just can't work out what the Qs stands for. ^T=Qs / mC where ^T= change...

Does anyone have any suggestions of how to make a device follow the sun acrossed the sky? It will be a solar panel mounted on a satellite dish acting as a large sunlight collector, but it needs to be aligned with the sun for optimal power. Thanks for any input.

Please justify this phenomenon: In an active mode for a transistor, ideally it is assumed that collector current is independent of the base collector reverse bias, whereas, the collector is slightly dependent on the base collector voltage. Thanks ~Eternallove

Could someone explain in layman's terms what collector current is? How do you calculate it?

The emitter current in a certian npn transitor is 8 mA. If .8% of the minority carrier injected into the base recombing with the holes, find the base current , collector current and the exact value of alpha i am not sure how to get this started thanks joe