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I believe you are referring to a piece of test equipment also known as a "function generator." It generates a voltage equal to some function of time. The most basic models will produce sine, square, and sawtooth waves at different frequencies, but the more expensive models will do all kinds of waves. these voltage time base generators are those which are used to generate voltage linearly with time. by using the transistor as a switch and using a capacitor we can get the ramp out put. here the working would be the capacitor charging when the transistor is off and discharging when the transistor is on. the discharging time is very less compared to the charging time. when the capacitor charges voltage across it increases exponentially and we get a wave which increases linearly with time.
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∙ 15y ago
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Does a generator produce ac or DC voltage?
NO, generator always generating AC current,when commutator is used,at that time AC is converted in DC.and due to this generator is called dc generator.
How does a voltage regulator regulate the voltage output of an ac generator?
Generator output is controlled by voltage feedback to the voltage regulator which senses voltage drop or rise and regulates the current being sent to the armature. This rise and fall of the armature current governs the generators output voltage.
Can we use transformer as a generator?
No. Transformer essentially can step up or step down voltage or provide same voltage across the secondary side. It can not generate voltage on its own. Generator is essentially a rotating device. Transformer is a static device.
Why should a prime mover's speed be kept constant?
As you asked the question and it was added it to the electrical category I am presuming that you are talking about electrical generation. The prime mover has to be kept at a constant speed. The speed of the prime mover governs the frequency of the voltage generated. As the load increases the engine will start to slow down. The engine's speed governor senses this drop in RPM, hence the drop in frequency, and increases the fuel supply to the engine by advancing the diesel engine's fuel rack. This action increases the engine speed and brings the generated frequency back to the required system frequency.Also as the load increases, the output voltage will start to decrease. The output voltage is controlled by the generator's voltage regulator. When the decrease in voltage is sensed by the voltage regulator, it increases the generator's field excitation voltage which will bring the voltage back to the required system voltage.These actions are going on continuously, balancing each other all the time the engine is running and the generator is producing an output voltage.
How is a Load applied to a ac generator?
The load conductor is connected to the load side of the generator breaker. Once the generator is up to speed the load breaker is closed and the voltage is then applied to the load.
What is the off load voltage of the generator?
Terminal voltage is the voltage between the output terminals of a generator.
What is Miller time base generator?
yes
Generator excitation voltage?
the voltage which is given for creating magnetic field in a generator is known as excitation voltage.
Does a generator produce ac or DC voltage?
NO, generator always generating AC current,when commutator is used,at that time AC is converted in DC.and due to this generator is called dc generator.
What determines the voltage in a generator?
in generator the flux will determines the voltage. the flux will improve by auto voltage controller or any other equipment.
What happens at the rated value of the voltage of the generator?
The rated voltage of a generator decreases due to many causes such as armature reaction, overloading of the generator and AVR failure/ weak excitation voltage.
How is voltage reduced when using power tools on site?
If you are working from a generator and many tools are used at the same time, voltage will drop.
How does the load affect voltage output of a series generator?
In a series generator, as load is added, output voltage increases.
How do you raise generator voltage?
A generator's terminal voltage can be raised by increasing the field current. This will result in an increased load on the generator, which will slow it down unless the governor kicks in to keep the generator at speed.
What are the factor affecting voltage build up of dc generator?
List the factors that affect the voltage building in D.C generator.
How do you raise voltage in generator?
Increasing the field current will boost the generator output voltage, assuming the governor doesn't limit.
What has a generator?
A Generator is electrical machine which produces electrical current and voltage..
