Consult each teacher, if the voltage in the graph adjusts,Niu Hao understands, adjust of voltage. Is then voltaic adjustment button below what circumstance to use?
Electric current should depend on laden size, same can load still adjust electric current?
Solve:
Carry output short circuit, adjust knob, seeing ammeter show electric current of how many A is power source output the biggest electric current. Do not exceed this electric current when load when, voltage can stabilized voltage, what voltage follows laden internal resistance is output to reduce voltage to drop when be equal to this electric current, output voltage to be 0V for 0 Ω when load, . Adjust the biggest electric current that voltaic action is limitative load, down to reduces pair of as a result of not certain factor load to cause bigger damage when the experiment.
1, " receive above move voltage the biggest " , also move ammeter first at this moment the biggest, right now volmeter will indicate the biggest 30V, ammeter indicates 3A, to achieve " electric current moves 1A " purpose, move voltaic button, in the primary process that reduces electric current voltage begins to drop namely, when electric current reduces booked 1A, voltage directive is 10V. Right now, although the position of voltage button is to be moved in the largest position, manostat also outputs the voltage of 10V merely.
2, " receive above move voltage the biggest " , also move ammeter first at this moment the biggest, right now volmeter will indicate the biggest 30V, ammeter indicates 3A. To achieve " electric current moves 1A " purpose, I do not move voltaic button, move voltage button: Barefooted > index of Miao? volmeter will be reduced, ammeter index also is reduced, when electric current reduces 1A, volmeter will indicate 10V, although the position of right now electric current button is,be in likewise the largest position, but the electricity that manostat also exports 1A merely.
3, with voltaic adjustment voltage adjustment button Niu Dou is moved the smallest, right now no matter adjust alone which button, power source won't have output.