اجيبوني من فضلكم

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21 يونيو 2014
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HiI have the following question please answer it if you know the answers and you can write the answer in English or in Arabic?1) what is the exact meaning of equalization voltage and floating voltage that can be adjusted for the inverter?2) you know that transformer can change between the voltage and current as if it is a step up transformer then it will make the voltage higher and the the current lower and vise versa if it is a step down transformer but what is about the DC regulator is it with the same principle suppose we have a regulator that is convert any voltage from 12 volts to 9 volts. is the 3 volts lost as drop voltage in regulator or it is Compensated by current?3)with respect to the electrical arc that might be happened for example if there is a loose connection at phase wire that is connected to earth leakage why is it happened although we don’t have a transformer like what is Available inside the arc machine?4) with respect to surge arrester :- what is the difference between it and the circuit breaker as I know that both of them is used to protect the equipments and humans from over current and I know the principle of operation of circuit breaker Which is depend on relay but what about the principle of operation of Surge arrester
 

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إنضم
22 أكتوبر 2007
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regulator بمثابة مقاومه فى الدائره لتخفيض الفولت - ولا تعويض ل الأمبير - فالأمبير مرتبط بقيمة سحبك له. ولا علاقه لهذه الاساسيات بأساسيات فكرة المحولات - فالمحولات تقوم على فكرة الطاقه الداخله بالوات = الطاقه الخارجه مع اعتبار المفقودات ومن هنا جاءت فكرة ارتفاع وانخفاض التيار وكذا الفولت فى الدخول والخروج للمحول. هل نترك الفرصه لباقى الاسئله لتوسيع المشاركه - عموما سأتابع معك.
 

alsouf

عضو جديد
إنضم
12 يوليو 2014
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منظم الجهد الخطي (بالإنجليزية Linear voltage regulator) هو قطعة الكترونية مصنوعة من اشباه الموصلات تستخدم لأمداد الدائرة بفولتية ثابتة عن طريق تغيير المقاومة
اذا اردت شرح موسع فنحن في الخدمة اخي .
 

ماجد عباس محمد

عضو معروف
إنضم
3 سبتمبر 2006
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HiI have the following question please answer it if you know the answers and you can write the answer in English or in Arabic?1)

what is the exact meaning of equalization voltage and floating voltage that can be adjusted for the inverter?
which inverter?!!
2) you know that transformer can change between the voltage and current as if it is a step up transformer then it will make the voltage higher and the the current lower and vise versa if it is a step down transformer but what is about the DC regulator is it with the same principle suppose we have a regulator that is convert any voltage from 12 volts to 9 volts. is the 3 volts lost as drop voltage in regulator or it is Compensated by current?
DC regulators are drop down regulators but switching regulators may be step up or down and also a DC to DC converter may be used with the same performance like transformers as it is an oscillator feeding a transformer with rectifier on its secondary
3)with respect to the electrical arc that might be happened for example if there is a loose connection at phase wire that is connected to earth leakage why is it happened although we don’t have a transformer like what is Available inside the arc machine?
a loose connection will force the full current to pass through a small wire rising its temperature to evaporation and hence an ionized air forms this spark
4)with respect to surge arrester :- what is the difference between it and the circuit breaker as I know that both of them is used to protect the equipments and humans from over current and I know the principle of operation of circuit breaker Which is depend on relay but what about the principle of operation of Surge arrester
Please contact electrical department for that as my knowledge tells me that the circuit breaker protects if the current going through it exceeds a certain limit but the arrestor protects against switching sparks which are two different aspects

 
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