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One type of diode, the zener, is designed to break down at a specific voltage and conduct heavily when reverse-biased. The zener is normally used as a shunt regulator in series with a fixed resistance. When the reverse breakdown voltage is reached, the zener conducts, and the resulting current flow through the resistance causes a voltage drop across the resistor, lowering (and regulating) the voltage output.
The regulation, while not super accurate and also having a temperature coefficient, is still sufficient for many purposes.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoTo rectify it to dc. Without a rectifier it would still be a sinewave. If you use a rectifier the supply looks like a constant dc above and below the GND line. Even though rectification is used for push-pull systems, the dual DC still feeds an ac style stage.
Wiki User
∙ 8y agoWe need a device to convert a bi-directional current to a uni-directional current.
A diode does exactly this. It acts as an electronic valve that allows current flow in one direction. A diode in itself is not a rectifier. We need capacitors to filter the ripple content and get a pure DC waveform.
Also, there are other devices that can be used in place of a diode. An SCR functions similarly, and we have more control over the output waveform, since we can turn the SCR on and off according to our application.
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The output voltage from a PC power supply are?
Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.
How monorail moves?
Same as dual rail : some form of power turns the wheels that hold the train up. It's just that you can design a monorail with side curtains that hide the wheels from view.
What is the advantage of using the centre tapped full wave rectifier?
By using a center tap, with the tap connected to ground you can use one winding for the positive AC swing and the other winding (both relative to the center-tap) for the negative swing. Thus, when the secondary windings can be connected to the AC inputs of a full-wave-bridge rectifier to harvest a bi-polar DC power source. i.e. - a positive DC voltage 'rail' AND a negative DC voltage rail, say for example you have a 24VAC center tapped secondary of a 110VAC transformer. With a full-wave bridge, the center tap becomes the circuit 'ground' (aka 'return') in a DC circuit.
What is DC ripple?
The following describes a method for using the Power Recorder to monitor and log the ripple voltage on a direct rectified DC power rail. # Set the Recorder to "Split Single Phase" # Connect N & G to the DC rail negative # Connect A to any mains input phase # Connect B to the DC rail positive
Why op amp circuit without negative feedback so unstable?
I f an amplifier has a great gain lets say 1000 and the power supply is 10 v then 10 mv will saturate the amplifier to either rail some amps has 10mv just in offset voltage
Is the metro rail train using ac or dc power supply?
dc power supply
What is a 12 volt rail on a power supply?
The + or - 12V output connection.
How do you take off the top rail on the spm4 dual power rifle?
Best left to a trained technician.
The output voltage from a PC power supply are?
Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.
What should the maximum ripple that a new power supply should have?
For a god quality PC power supply; 120mV on the 12V rail 50mV on the 5V and 3.3V rails
What is the greatest disruption in Sudan?
inconsistant power/ electrical supply incosistant supply of fresh water incosistant road and rail transport system
What should a technician do to determine that the plus 5V rail on the power supply is outputting 2.2 Volts?
A voltmeter will show the voltage on the rail and a technician will know how to use one.
What are the schematics for the 2001 Buick century?
Schematic is just another name for a wiring diagram. It is usually drawn out in a ladder diagram format. The left ladder rail representing the Positive side of power supply and right ladder rail representing the Negative side of the power supply.
What help keeps a power supply from overheating?
The simplest way is that most power supplies have a built-in fan (or several) to keep them cool. If this fan is blocked, or the case airflow is going opposite to the power supply airflow (which typically pulls air from the case, out the back) then it can cause overheating. Lowering the power draw on the power supply will also reduce the amount of heat it produces, especially on the 12v rail.
How do you use steam power on rail rush?
how do you use the steam power in rail rush
How monorail moves?
Same as dual rail : some form of power turns the wheels that hold the train up. It's just that you can design a monorail with side curtains that hide the wheels from view.
On a computer power supply if I connect 1 fan that uses 12 v and 1 amp on a 20 A 12v rail do I only have 19 amps left?
Yes, the 20 amp capacity is the maximum amount of amperage that is recommended to be drawn off of that rail.
