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Power Supply Question.

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This specification often includes the output voltage of the power supply. Some supplies (commonly switching power supplies) are not rated down to 0 volts output. Trace the shape of the input current waveform, given the output voltage waveform and magnetizing current waveform (dotted line) shown here: The non-filtered DC output waveform is still shown as a Q) Are there microcontrollers with a built-in FOC block, or are there separate ICs to handle the FOC for us? http://macland.net/power-supply/power-supply-5v-question.php

Q) Is sinusoidal control possible for trapezoidal BLDC motor? For the same reasons my radio did not function properly on unfiltered, rectified AC, many electronic circuits will not function on it either. If time permits, discuss this possibility as well. Read the specifications carefully and always look at the fine print. http://www.instructables.com/answers/Power-Supply-Question/

Power Supply Test Questions

Zener diode are generally made of ………. Many microcontrollers have inputs with built-in debounce or input qualification. As microcontrollers become more powerful and come with enhanced software libraries, controlling BLDC motors can be easily done without becoming a motor expert. References Appendix 1: Glossary Download Guide Introduction Power supplies are amongst the most popular pieces of electronic test equipment.

  1. In the model at the right, "tie" points are provided to allow monitoring output voltage with a more accurate digital meter or to allow connections to other circuits (note the tie
  2. Here lists some typical set of SCPI commands common for power supplies: [SOURce:]MODE {} MODE?VOLTage [:LEVel] {}[:LEVel]? :PROTection:STATe {} :STATe?[:LEVel] {} [:LEVel]?CURRent [:LEVel] {}[:LEVel]?
  3. Q) How critical is the angle theta measurement?

They also need real, hands-on practice building circuits and using test equipment. The behavior of a crowbar might not be desirable -- while powering off the circuit will protect it, it might also cause a problem by not having the circuit powered! Question 29 A technician is troubleshooting a power supply circuit that outputs substantially less DC voltage than it should. Commercial Power Supply Has Voltage Regulation Of Follow-up question: with regard to the troubleshooting technique, this technician seems to have started from one end of the circuit and moved incrementally toward the other, checking voltage at almost every

The 9130 is specified to have less than 3 mV RMS of noise; this particular supply met the specification. If the value is off by more than about 5-10% it can cause a lot of efficency loss and could lead to motor stall. XP's manufacturing facility has an excellent track record in this respect and the decision in 2006 to move into manufacturing has opened up many new revenue opportunities that were previously unavailable check my blog Typically stated in rms AC voltages (with zero ripple voltage representing a perfectly filtered power supply).Ripple CurrentThe portion of unfiltered AC current at the output of a filtered power supply.RMSRoot Mean

Q) Are there any considerations when changing direction (ie, how to offset motor momentum in the opposite direction)? Ac Power Supply Mcqs The two 30 volt channels can be connected in series or parallel for higher voltage or current, respectively. What follows is a sequential record of his measurements: VTP9−TP10 = 0 volts DC VTP8−TP7 = 0 volts DC VTP8−TP5 = 0 volts DC VTP6−TP7 = 0 volts DC VTP4−TP5 = Theme by MyThemeShop Skip navigationelement14Welcome, GuestLog inRegister0Activity TranslateSearchCancelSearchHomeActivityPeopleContent Blog postsDocumentsDiscussionsPollsVideosEventsStatus UpdatesSee All>Topics 3D PrintingArduinoBeagleBoardBusiness of EngineeringEmbedded FPGAIndustrial Automation Internet of ThingsRaspberry PiRaspberry Pi AccessoriesRaspberry Pi ProjectsRoboticsSingle Board ComputersTest & MeasurementSee All>Resources

Mcq On Power Supply

A) Those two topologies are used since the three motor phases need to be connected at the neutral point so that the current will return to ground. http://electronicspost.com/multiple-choice-questions-and-answers-on-regulated-dc-power-supply/ Our larger competitors are generally not as close to the customer as they often sell through distribution and reps. Power Supply Test Questions Q) Can you implement 12-step control by adding steps such as U-in, with W&V out, etc. -- as a compromise between 6-step vs continuous control? Multiple Choice Questions On Smps Question 22 Complete this schematic diagram, turning it into a split (or dual power supply, with three output terminals: +V, Ground, and -V: Reveal answer Hide answer Examples of "split”

Three categories you will see are: Proprietary Proprietary command languages are typically specific to one manufacturer and sometimes even specific to a specific set of instruments. this contact form Q) For which applications can we use sensorless control and for which can we not use it. If the input a.c. Because they are true power supplies, they are designed to operate safely into a dead short continuously. Objective Question On Smps

Power Supply Specifications Constant Current and Constant Voltage Mode The category of DC power supplies discussed in this section changes AC line voltage into DC voltages. A) The PWM frequency is much greater than the frequency of the sinusoid that you are trying to produce. What are the main potential risks to the business? have a peek here We use them to describe the behavior of the motor but all of the measurements happen on the motor phases.

These reduce efficiency and create hot spots. Series Voltage Regulator Viva Questions Ripple can be defined as the portion of unfiltered AC voltage and noise present at the output of a filtered power supply when operated at full load and is typically specified Notes: The purpose of this question is to get students to look up the formula for calculating voltage regulation percentage.

Tracking accuracy Some power supplies with two or more outputs may have a tracking feature.

Since the motor is simply an RL filter modulating the PWM in a sinusoidal pattern will create a clean sinusoidal signal in the windings. Can I use a slightly bigger or smaller ouput capacitor in an audio amplifier? Wire and contact resistance Can I connect in parallel? Which Of The Following Statements Does Not Describe An Advantage Of Digital Technology Does field control also suffer from this?

If a student simply tells you, “the vertical input is DC-coupled,” press them for more detail. Hack into a Lottery Is it possible to handle Trigger.oldMap in @future method? Our major OEM customers require that their suppliers have complete control over the production process to guarantee product quality. Check This Out A power supply has a voltage regulation of 1%.

Why do researchers use extremely complicated English sentences to convey their meaning? steveastrouk -max-3 years agoReplyNo, HIGHER switching speeds, done right, are much more efficient, components are smaller, emissions lower. Question 26 Calculate the approximate DC output voltage of this power supply when it is not loaded: Reveal answer Hide answer Vout ≈ 21.4 volts Notes: Ask your students to