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Biasing-Application of suitable DC voltages to operate our amplifiers in desired region of operation(say active or saturation or cut-off region) complying our needs.However in order to maintain a constant Q point irrespective of various external factors,hence it again comes to the need for biasing that compensates the change in external factors suitably thereby maintaining a constant Q-point. Voltage divider bias or self bias is a process of suitably biasing amplifier by connecting two resistors in series in the answer. By proper selection of resistors R1 and R2, the operating point of the transistor can be made independent of β.
Wiki User
∙ 15y ago
Wiki User
∙ 8y agoTo bring down voltage in proportion with the actual voltage.
For example, measuring mains voltage (~220V) in your home, with a microcontroller which operates at 5V and can only measure voltage between 0V - 5V.
In this case you can lower the mains voltage proportionally and measure the voltage, then multiply it with inverse of proportionality constant to get the actual voltage.
This is what is done in digital voltmeters, multimeters etc.
Wiki User
∙ 12y ago- only one dc supply is necessary.
- Operating point is almost independent of β variation.
- Operating point stabilized against shift in temperature.
Wiki User
∙ 12y agoIts the most stable biasing which is free from transistor parameters. Calculations are also simple. That's why its widely used.
Wiki User
∙ 12y agoelectricity is conductos and resistors a condur lets electrons flow and a resister doesnt
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What is a voltage divider circuit?
The voltage divider circuit is a network of two or more components in series, often resistors, between a potential difference. The voltage between the components will be somewhere between the potential difference across the whole network and so divides the total voltage into one or more intermediate voltages.
What could be the tendencies for the voltmeter if the voltages to be measured exceed the range?
You'd potentially damage the meter. Whether you do or not is immaterial; if the meter cannot measure the range of voltages you are expecting, it will not give accurate readings over that voltage range, thus you should not use it. Buy a different meter that will measure over that voltage range, or use a voltage divider circuit to get a lower voltage at a certain ratio of what is actually in the circuit (this may be difficult to do, or very simple depending on the circuit tested - the key is you do not want to load the circuit with the voltage divider network).
How do design a high voltage voltmeter?
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
The dc input resistance of MOSFET is?
it depends on the type of the circuit you are analyzing..it could be a voltage divider, emitter follower, be specific on what type of circuit and maybe i can help you aobut this question.
What reduces voltage?
It depends on what you mean by 'voltage'. For example, if you mean electromotive force (e.m.f.), then the internal resistance of a battery or generator will cause an internal voltage drop, resulting in the terminal voltage being lower than the open-circuit voltage and the greater the load, the lower the open-circuit voltage. On the other hand, if you are asking 'how' do you reduce voltage, then there are various ways. For a.c. voltages, we can use a step-down transformer. For d.c. voltages, we can use a variable resistor connected as a potentiometer, or a pair of fixed-value resistors to form a voltage divider.
How does a voltage divider work?
The essential circuit of a voltage divider, also called a potential divider, is:
What kind of circuit lowers voltage?
you can use a voltage divider or a step-down transformer to lower voltage.
What is a voltage divider circuit?
The voltage divider circuit is a network of two or more components in series, often resistors, between a potential difference. The voltage between the components will be somewhere between the potential difference across the whole network and so divides the total voltage into one or more intermediate voltages.
What is the voltage divider theorem?
it is aa linear circuit that produces the output voltage from the fraction of its input. It is also known as potential divider.
What is the difference between a voltage divider circuit and voltage regulator I was told if the circuit consumes low current then the voltage divider can be used what does that mean?
A: that is true for less current a divider is OK it has to do with the series resistance and loading if the loading is forever fixed and the source is also fixed at a value then a divider can be used no matter what the current is.
What is example of dependent source and independent source of voltage and current?
Boss its a circuit not a device, you can also create one of yours..... just use simple logic of voltage divider and current divider rules...-satendra.svnit@gmail.com
What is voltage divider circuit?
The two resistor voltage divider is used often to supply a voltage different from that of an available battery or power supply. In application the output voltage depends upon the resistance of the load it drives.
What happens to voltage in a parallel circuit?
Voltage can be divided by a voltage divider, also known as a potential divider. Scroll down to related links and look at "Calculations:voltage divider (potentiometer) - damping pad - loaded and open circuit (unloaded) - voltage drop at the voltage divider"
What could be the tendencies for the voltmeter if the voltages to be measured exceed the range?
You'd potentially damage the meter. Whether you do or not is immaterial; if the meter cannot measure the range of voltages you are expecting, it will not give accurate readings over that voltage range, thus you should not use it. Buy a different meter that will measure over that voltage range, or use a voltage divider circuit to get a lower voltage at a certain ratio of what is actually in the circuit (this may be difficult to do, or very simple depending on the circuit tested - the key is you do not want to load the circuit with the voltage divider network).
What are the application of voltage divider biasing?
To get reasonable gain without losing stability of circuit. ANSWER: Is to reduce the input to a lesser value or to match signals impedance
What should the current be through a bleeder resister in a voltage divider circuit?
The current should be high enough to maintain the voltage at each division. Generally, the current should be ten times the load current or the voltage will be across the voltage divider. If possible use regulators or zeners or regular diodes. I'm not saying dividers are bad but there are less current sensitive solutions.
How do design a high voltage voltmeter?
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
