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A: an operational amplifier has two input A+ and a - input feeding to a base of a transistor ideally both diodes are matched with a current source to make them equal so basically they are both balanced or virtually at the same potential increasing one potential to one will inversely effect the other.
usually these junctions are transistor base to emitter but it could that one is just a plain diode working on the exponential curve of the diodes
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How does the operational amplifier work?
The operational amplifier is a device with two inputs, and one output. One input is called non-inverting, while the other is called inverting. Sometimes, there are two outputs, in which case one is also non-inverting and the other inverting. Within the limits of the design of the operational amplifier and its circuit, the output will assume whatever state is necessary to make the two inputs equal to each other. The output goes in the same direction as the non-inverting input, or in the opposite direction as the inverting input. Note that for the operational amplifer to work correctly, there needs to be some kind of feedback loop, usually from output to inverting input (we call this negative feedback), so that the output can track one of the two inputs in the ratio of the bridge that is setup in the circuit design.
How rotating magnetic amplifier work?
what does it mean by rotating amplifier and how it works?
What amplifier do you need for a technics stereo graphic equalizer SH-E50?
I have one of these graphic equalizers and if your amp has a dedicated output and input for a graphic via a phono connector then it will work. If it doesn't then you could add a phono connector switch. This device would have inputs for all your devices via phono connectors (cd player, computer, satellite receiver etc) and it would have one output which would go into the graphic equalizer then out of it into one input on your amplifier. You would then select the individual device on the phono connector switch which you are going to play and select the solitary input on your amplifier.
What part of a circuit dissipates energy?
A: ANY part that uses current to do the work will use some of the input energy to make it operational. this energy is called dissipation of the device and it is wasted as heat
Calculate the power out put of an amplifier that has an input of 15wand a gain of 25dB?
If you want to work in watts, convert 25dB to a scalling factor: 3dB = 2 x input 10dB = 10 x input 20dB = 100 x input ...25dB = 10 ^ (25/10) = 316.2 x input So the output is 15 Watts x 316.2 = 4.7kW If you want to work in dB, then convert 15 watts to dB: 10 * log |P| = dB = 10*log |15| = 11.76dB so the output is 11.76 + 25 = 36.76dB
How does the operational amplifier work?
The operational amplifier is a device with two inputs, and one output. One input is called non-inverting, while the other is called inverting. Sometimes, there are two outputs, in which case one is also non-inverting and the other inverting. Within the limits of the design of the operational amplifier and its circuit, the output will assume whatever state is necessary to make the two inputs equal to each other. The output goes in the same direction as the non-inverting input, or in the opposite direction as the inverting input. Note that for the operational amplifer to work correctly, there needs to be some kind of feedback loop, usually from output to inverting input (we call this negative feedback), so that the output can track one of the two inputs in the ratio of the bridge that is setup in the circuit design.
How does an Operational Amp work?
An operational amplifier is an extremely high gain differential voltage amplifier--a device that compares the voltages of two inputs and produces an output voltage that's many times the difference between their voltages. How the operational amplifier performs this subtraction and multiplication process depends on the type of operational amplifier, but in most cases two input voltages control how current is shared between two paths of a parallel circuit. Even a tiny difference between the input voltages produces a large current difference in the two paths--the path that's controlled by the higher voltage input carries a much larger current than the other path. The imbalance in currents between the two paths produces significant voltage differences in their components and these voltage differences are again compared in a second stage of differential voltage amplification. Eventually the differences in currents and voltage become quite large and a final amplifier stage is used to produce either a large positive output voltage or a large negative output voltage, depending on which input has the higher voltage. In a typical application, feedback is used to keep the two input voltages very close to one another, so that the output voltage actually falls in between its two extremes. At that operating point, the operational amplifier is exquisitely sensitive to even the tiniest changes in its input voltages and makes a wonderful amplifier for small electric signals.
How does an operator work?
An operational amplifier is an extremely high gain differential voltage amplifier--a device that compares the voltages of two inputs and produces an output voltage that's many times the difference between their voltages. How the operational amplifier performs this subtraction and multiplication process depends on the type of operational amplifier, but in most cases two input voltages control how current is shared between two paths of a parallel circuit. Even a tiny difference between the input voltages produces a large current difference in the two paths--the path that's controlled by the higher voltage input carries a much larger current than the other path. The imbalance in currents between the two paths produces significant voltage differences in their components and these voltage differences are again compared in a second stage of differential voltage amplification. Eventually the differences in currents and voltage become quite large and a final amplifier stage is used to produce either a large positive output voltage or a large negative output voltage, depending on which input has the higher voltage. In a typical application, feedback is used to keep the two input voltages very close to one another, so that the output voltage actually falls in between its two extremes. At that operating point, the operational amplifier is exquisitely sensitive to even the tiniest changes in its input voltages and makes a wonderful amplifier for small electric signals.
Can you use an extra stereo receiver for an amplifier?
If it has auxiliary inputs, such as a line level input, then yes, it should be able to serve as an amplifier. Be warned though that it probably won't work well as a guitar / instrument amplifier.
How does an op-amp differ from other amplifier suchas common emitter transistor amplifier?
A: They both use transistors. In actuality before an op amp becomes an op amp a discrete transistor made is made to provide it capabilities before it gets integrated into a substrate chip we call op amp. OP AMP have two input to work as a differential amplifier the input are bases closely match to provide virtual no voltage or current offset. Single ended amplifier has one input its reference is the signal source return.
What does an amplifier do for a subwoofer?
An amplifier will power your subwoofer so they can work.
How do you connect a power amp's 70 W output to another amp's rca input?
You can accomplish this through a simple RC network. This network needs to serve several goals: (a) it needs to reduce the source amplifier's output voltage, which depends on this amplifier's design and can be anything from a few volt to 60 or 80 volts peak to peak, to the second amplifier's maximum input voltage (typically in the area of 1 volt peak to peak). (b) it should let work the source amplifier work against a low-impedance sink, because this is what it is designed for. The destination amplifier itself has a very high input impedance. (c) typically, you'd prevent DC coupling by inserting a first-order highpass filter with a -3dB frequency of, say, 20 or 30 Hz.
Will an unpowered subwoofer work when plugged into an amplifier?
A passive sub-woofer does work when plugged in to an amplifier. In an active sub-woofer ("powered") the amplifier is built in.
How does a negative feedback work?
Some output signal is fed back to thee input and subtracted. This results in a much more stable reliable amplifier.
Is there any amplifer which will work without an external current source?
An amp with no power supply? No. Can't be done. An amplifier increases the current of the input signal, and to do so it needs power to do it with.
How rotating magnetic amplifier work?
what does it mean by rotating amplifier and how it works?
What amplifier do you need for a technics stereo graphic equalizer SH-E50?
I have one of these graphic equalizers and if your amp has a dedicated output and input for a graphic via a phono connector then it will work. If it doesn't then you could add a phono connector switch. This device would have inputs for all your devices via phono connectors (cd player, computer, satellite receiver etc) and it would have one output which would go into the graphic equalizer then out of it into one input on your amplifier. You would then select the individual device on the phono connector switch which you are going to play and select the solitary input on your amplifier.
