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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.

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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 does a 9V Voltage Rail do in a circuit?

A 9V voltage rail in a circuit provides a stable voltage supply of 9 volts, which is commonly used to power various electronic components and devices. It acts as a reference point for the circuit's voltage levels, ensuring that components receive the appropriate voltage for their operation. This rail is often used in battery-powered devices, amplifiers, and microcontrollers, facilitating efficient performance and functionality. Additionally, the 9V rail can be used in conjunction with other voltage rails to create a multi-voltage system within a circuit.


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.


To troubleshoot problems with incorrect voltages in power supplies you must?

To troubleshoot incorrect voltages in power supplies, first, ensure the power supply is properly connected and functioning by checking for any visible signs of damage or loose connections. Next, use a multimeter to measure the output voltage against the specified ratings for each output rail. If discrepancies are found, inspect internal components such as capacitors, diodes, and voltage regulators, as they may be faulty. Finally, if issues persist, consider consulting the power supply’s documentation or seeking professional assistance for repair or replacement.

Related Questions

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The most commonly used rail on a power supply is the +12V rail. It is primarily utilized to power components such as CPUs, GPUs, and other peripherals in computers and electronic devices. The +12V rail is essential for providing the necessary voltage to support high-performance components, making it a critical aspect of modern power supply design.


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The output voltage from a PC power supply are?

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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


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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 is a 12 volt rail on a power supply?

The 12 volt rail on a power supply is a circuit that provides a steady flow of 12 volts to components like the CPU, GPU, and other high-powered devices in a computer. It is essential for powering these components efficiently and reliably. Variations in voltage output or instability on the 12 volt rail can impact the performance and stability of the connected hardware.


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.


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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.