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It is called feedback because it is regulated by its own product. In other words, the product of the reaction gives a feedback which either inhibits the reaction (negative feedback) or activates it even more (positive feedback).
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoIn any electrical circuit, there is an input and an output. Normally, we want to control the output within a certain band. For eg., in the case of an oven, the input is electrical power and the controlled parameter is the temperature inside the oven which we want to maintain within say, +/- 1 deg.C irrespective of the supply voltage fluctuations and the load (foodstuff) inside the oven. One way of controlling the temperature is by having an open loop control whereby, the supply to the oven is switched 'on' and 'off' for a predetermined duration. However, this type of control is not very accurate. Therefore, one resorts to 'closed loop' control using feedback. The actual temperature in the oven can be sensed by a thermocouple and the output of the thermocouple (which will be in the order of microvolts) after amplification is used to switch 'on' or 'off' all or some of the heater coils so that the temperature is maintained within the required limits. A cruder way of controlling the temperature is by a thermostat which will lead to a larger band of temperature fluctuation. Similar principle of feedback is used for controlling other parameters such as the speed of a motor, voltage output, audio output of an amplifier etc.
Wiki User
∙ 13y agoNegative feedback (a portion of the output is inverted, and fed back to the input of the circuit) is used to provide stability of the output over a wide range of inputs.
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What are the Recommendations for when to use the series circuit?
This really depends on the scenario. What type electrical circuit are you talking about.
What type of feedback is used in the phase shift oscillator circuit?
Positive feedback
What is the feedback circuit?
A circuit in which output feeding back to input to increase or decrease the gain is called feedback circuit. Basically part of output feeding to input in such way that it increase the value of input is positive feedback and it also increase gain of circuit and similarly to it when part of output feeding to input in such way that it decrease the value of input is called negative feedback it also decrease the gain of circuit.
What is use of RFC in Hartley oscillator?
it is a radio frequency choke which connects the dc supply to the circuit but isolate the dc supply from the high frequency oscillations generated in the feedback circuit
Which is best positive feedback or negative feedback?
Obviously,it depends on the situation. consider a transistor amplifier.To minimize the change in collector current with respect to temperature,collector to base bias is used . This circuit uses a NEGATIVE FEEDBACK in order to compensate the rise in output current with temperature. But in order to achieve maximum gain, the same circuit can use POSITIVE FEEDBACK by connecting the amplified output to the input .
What is the only thing that can use power in an electrical circuit?
The load that is connected to the circuit is what draws the power of the electrical circuit.
What type of feedback used in the oscillator circuit?
There are many different types of oscillator circuits, the majority of which use positive feedback.
When they can use a resistor in a circuit?
When the circuit needs the electrical property of resistance, of course.
What is the use of ammeter?
To measure the current in an electrical circuit.
What are the Recommendations for when to use the series circuit?
This really depends on the scenario. What type electrical circuit are you talking about.
When making an electrical connection on a stove you should use?
When making an electrical connection on a stove, you should use a circuit breaker.
When you turn on a television what is the electrical circuit?
The electrical circuit when turned on it is considered closed. By the same token when an electrical circuit is turned off the electrical circuit is considered open.
What things need a electrical circuit?
Electrical devices need an electrical circuit.
What is an alternative to using a fuse?
An alternative to using a fuse is to use an electrical circuit breaker.
Can you use polyester thread in place of metal wires in an electrical circuit?
No.
What is use to measure the current flowing in an electrical circuit?
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What is feedback circuit?
A circuit in which output feeding back to input to increase or decrease the gain is called feedback circuit. Basically part of output feeding to input in such way that it increase the value of input is positive feedback and it also increase gain of circuit and similarly to it when part of output feeding to input in such way that it decrease the value of input is called negative feedback it also decrease the gain of circuit.
