Switch Definition and 565 Threads

I am thinking about switching my double major from Applied Mathematics and Statistics (AMS) and Economics to AMS and Pure Mathematics with maybe a minor in economics. I want to keep my two career options open: Actuary or going to grad school However I have been hearing from some upper...

Hi guys, i want to fix a circuit that will use a led and i want to use a transistor as the switch to the led. I would like the base current to be produced by a sound played throug ha mobile. A sound turning the light on and the same or other sound turning it off. No ideas how to do it.Thank you...

i have 7 data lines coming out from a microcontroller... i need the 8th one to control where its going to, either to a 7 input on a RAM chip, or a 7 input on an LCD display. basically i think I'm looking for a 7/8 bit switch... does one exist? can anyone supply me with the name of such a...

Hello, I have a strobe light which is powered normally by two AAA batteries in series creating a 3 volt DC power supply. When the batteries are inserted, the circuit is closed with the exception of the switch. The strobe light is composed of five LED's which have six different ON modes...

Which of the bulbs shown in the figure will light up first when the switch is closed? E: cell K: key A,B,C: bulbs PS: If it tells you that you don't have permission, logout and then login again to see it.

Hi, I know how to drive a transistor as a switch, but I am not very sure how to perform voltage and current calculation and analysis at the collector to emitter side. Basically what I know is that if the base is biased at 0.7 V, the transistor will be switched ON and current will flow...

Say a vibration switch is used as a trigger in a bike alarm. I know it will be more sensitive than a tilt switch, but once the vibration switch has been triggered, does it return to its "normally open" status simultaneously?

I have a circuit that I am going to use as a bike alarm. The problem is that I will need a tilt switch which acts like a push-to-break switch :confused: ...is it possible to get a switch like that? ...or are there any alternatives?please reply...

Hello all, I would like to ask how one can switch on and off a device connected to 220 V using one microprocessor output (5V). I know I should use a relay but can I use only one relay, or a cascade of two relays? Any suggestion for what type of relay I should use? TIA, Billy_w

Can someone explain to me how limit switch works in everday language, I got some sources that are too technical. Thank you,

Help, I have to switch off my PC at the wall socket and reboot to get onto the internet , everything used to work OK. I have, SUSE 9.1, D link router and use Tiscali. Thanks.

i need an on/off toggle switch for my bilge bump on my jet ski. But, the mounting panel is about 2 inches thick where the fiberglass is. the stem could be short but the threaded (back part) needs to be about 2 inches long in order to fit. I also need a platic or waterproof cover for it to keep...

Here's why people should switch to Linux..or maybe not http://www.ubergeek.tv/article.php?pid=54&swfSize=3

John Kerry has been very open about his stance that the gvt should sponsor a Manhattan Project type rapid shift away from traditional energy sources and to clean ones. I do not know what his position is on nuclear technology though. There are many people who favour a shift to a...

Consider the standard "guess which one of three curtains the prize is behind" scenario. After choosing curtain 1, you're shown that nothing resides behind curtain 2. If allowed, would you switch to curtain 3?