Tagged Questions

4
votes
3answers
72 views

Magnetic Field Transmission

I have heard from here that if you put 1 turn of wire around your house, you can hear music all around inside your house. It doesen't tell me very much on all of the components etc. to drive but I am ...
1
vote
2answers
134 views

Darlington Emitter-follower used as a buffer

I have a circuit with a Darlington emitter follower used as a buffer between a common emitter amplifier and a low resistance load (speaker). i wanted to know if this arrangement could alone (with the ...
4
votes
3answers
280 views

simple audio amplifier

I did this circuit in my protoboard, and it worked for a while, but the quality sound was terrible, and suddenly it stoped working. Can anyone explain me in which part of the circuit i did something ...
-6
votes
1answer
88 views

forgotten laundry stinks - electronic solution [closed]

I forget to move the laundry from the washer to the dryer. The clothes stink when left over night (this has occurred many times before). The buzzer is short and weak therefore, I would like to add a ...
2
votes
2answers
197 views

technology to search small objects like pendrive, key-chains etc

I am a web developer by profession. few days back I lost 8gb pen-drive :( I don't it is in home or somewhere else.... So now I am thinking of a device which can be attached with small objects so that ...
2
votes
2answers
324 views

Humming and Transmission issues

First of all, I am going through designing all of this because I did not find a ready made circuitry for my purpose which is mentioned later. If you know a circuitry that is well tested and does what ...
-6
votes
1answer
119 views

How to electromagnetically amplify voice? [closed]

How can I electromagnetically amplify the sound vibrations from my vocal cords to directly affect my body?
1
vote
2answers
284 views

mute de-amplify sound volume

I want to de-amplify the sound volume of my television. My native language is not english, and I do not know the correct word, if any, for the opposite of amplify. When my TV is turned from volume ...
2
votes
3answers
673 views

Picking a DAC for an audio amplfier

I'm trying to use a specific audio amplifier, TPA3111D1, to power a 10 watt speaker from a microcontroller. I would like to generate sound from a microcontroller that doesn't have a built in DAC, so ...