mibawad
@mibawad-hjwXTs Member
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Replied #Threads
What will be the shape of torque-speed curve in braking quadrant for DC motor?
All textbooks refer to the speed-torque curve for permanent magnet DC motor as a line in first quadrant as in the figure I am asking about...
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Replied #Threads
What will be the shape of torque-speed curve in braking quadrant for DC motor?
Hello, What do you mean by drooping curve? Could you explain more? Best wishes, Mohammed
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Replied #Threads
Hand crank generator battery charger circuit
What do you mean by "If the voltage is open circuit voltage and the current delivered is limited the battery may not be affected."? Is it...
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Replied #Threads
Hand crank generator battery charger circuit
Many thanks, for those useful information. I have another question what will happen if I charged 12V battery by 40V source or generator. Does the battery...
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Replied #Threads
Hand crank generator battery charger circuit
What do you mean by "What is worse, you may even drain the battery further if a lower voltage source is connected"? Moreover, during charging process...
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Replied #Threads
Hand crank generator battery charger circuit
Does it mean that I could charge 12V rechargeable battery at 5V for example? And, it will charge, but it might takes long time for charging....
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Replied #Threads
Hand crank generator battery charger circuit
Many thanks for your help. I would like to know if the varying in charging current has any effect on battery life time. I mean it...
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Replied #Threads
Hand crank generator battery charger circuit
Actually, I would like to know if there is a special circuit to charge a battery as the output voltage is varying according the rotation speed...
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Replied #Threads
DC generator equations
But, there is no supply voltage for generator. It is only in case of DC motor
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Replied #Threads
DC generator equations
@freak Therefore, I couldn't calculate the current and voltage generated from the DC generator without knowing the load as well. Is that what do you want...
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Replied #Threads
DC generator equations
@freak What I want to say that for DC motor or generator: Emf=V+Ia*Ra+La(di/dt) Emf=K*w If I know K, w, Ra and La, and I want to...
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Replied #Threads
DC generator equations
Many thanks for your reply. I would to know if I know the generator speed and the resistance and inductance values for the generator, and the...
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