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Why negative control is adopted in DC system And why DC circuit breakers are kept at the negative side?
The answer is: They are not. Whosoever told you that is off his meds. Alternatively, in some special applications there may be a reason for it. Many DC systems use a common ground where the loads are encased in the ground (like starter motors). Thus all breakers are positive, but some don't. If the loads don't care about polarity and the positive and ground are not common (like with a metal chassis), positive and negative is irrelevant.
Does a charged capacitor block DC or AC or both?
It blocks DC or it wouldn't be charged. It passes AC through it to ground or it wouldn't filter. But in the early days charged electrolytic capacitors were used as rectifiers or AM detectors.
How does a filter operates in DC power supply?
It removes the remaining AC ripple after the rectifier, using capacitors (to bypass it to ground) and/or inductors (to block it).
If you have an air solenoid valve DC and the wires are Green Black and White. Which one is positive and negative?
Green= Ground Black = live White = Neutral
Can a capacitor be hooked to a DC circuit?
Yes, capacitors can be, and often are, used in DC circuits. At steady state DC conditions, the capacitor has near infinite impedance. Its value is in its ability to resist changes in voltage, so it can serve as a transient filter. There is almost always a small ceramic capacitor connected between VCC and ground next to IC's in a digital circuit, for that exact purpose.
What color is green positive or negative for DC?
green is ground regardless of ac or dc
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
How do you ground in dc circuits. I've seen many circuits around the net with plus ve terminal from the battery and no -ve terminal to the battery and ground symbols.. wat to do in these circumstances?
The physical body of your DC Equipment is always your GROUND. This GROUND is where you also connect your -VE.
What is a ground loop isolator?
Ground loop isolators are used to break the DC circuit path for the audio shield ground circuit. It removes ground loops from the system, which are unwanted.
What causes a meter to read negative voltage across a DC motor?
The main cause for a meter to read negative voltage across a DC motor is a loose ground wire. The ground wire can be loose or may need to be cleaned.
What electrical systems are the current standard for cars?
12 volt DC Negative ground.
Flying time between Florida and DC?
For direct flights, about 1.5 hours flying time from Orlando to DC. This is time 'in the air' and excludes ground activities.
A DC ground wire coming from a power supply output is typically what color?
Typically black. DC +ve wire color typically red or brown.
How can a test light be used to test for power and ground.?
Testing for 12V DC power using a 12V DC test light, clip the test lead to a known ground (preferably battery negative post) then probe with the test light tip for power. Test light will illuminate when power is touched.Testing for 12V DC ground, clip the test lead to the positive post on the battery then probe with the test light for grounds. Test light will illuminate when a ground is touched.
What pins go to power load and ground on a bridge rectifier for building a DC power supply?
The two pins with the ~ symbol are for the AC input and the + and - are for the pulsing DC output
What is ac ground?
If a circuit is grounded through a capacitor it is referred to as AC ground because ac signal can pass through the capacitor DC level is blocked
What is ground coupling used for on an oscilloscope?
Ground coupling is a handy way to find the ground or zero volt level. Switching between ground coupling and DC coupling can be used to relate your DC coupled signal to ground. With modern digital oscilloscopes, the nominal ground level is typically displayed on screen. However, older analog scopes don't usually have this feature, so ground coupling becomes necessary. For more information please see the Tektronix oscilloscope app note "XYZs of Oscilloscopes". Available free from Tek's website.
