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Definition
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Term
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Definition
| Pressure of electrons in the wire |
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Definition
| Amount of electrons moving through a certain point in a wire |
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Definition
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Definition
| Materials that resist the flow of electricity; measured in ohms |
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Definition
| Direct current; one constant voltage direction |
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Definition
| Alternate current; Voltage constantly switching directions |
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Definition
| Common power cable that connects PSU to wall outlet |
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Term
| What is the US standard for AC voltage? |
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Definition
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Term
| What is the international standard for AC voltage? |
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Definition
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Term
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Definition
| Smallest of the vertical slots for wires; current travels in this wire |
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Definition
| Big vertical slot for wires; no current |
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Term
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Definition
| Circular wire connection; hot to ground |
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Definition
| Measures electrical current |
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Definition
| Adapter that converts AC current into computer friendly DC current; often NOT interchangeable!!! |
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Term
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Definition
| Power strip that protects against voltage spikes; good for one spike only! Measured in joules; minimum 800 joules, generally |
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Term
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Definition
| Uninterruptible power supply - provides constant power and protection from spikes and sags |
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Term
| What DC voltages does the AC adapter converter ~120 VAC to? |
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Definition
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Term
| Motherboard power connector |
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Definition
| 20 or 24 pins, sometimes with an additional 4, 6, or 8 pin additional supply |
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Term
| What is the most common type of power connector? |
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Definition
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Term
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Definition
| Provides 5 and 12 volts; white plastic and 4 pins |
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Term
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Definition
| Used only for floppy disk drives; provides 5 and 12 volts to peripherals |
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Term
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Definition
| Serial ATA; 15 pin power connector for SATA hard drives |
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Term
| What do the colors on wires indicate? |
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Definition
| Red goes to hot wires of all colors; black ALWAYS goes to ground |
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Term
| What is special about the original ATX power supplies? |
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Definition
| 1) 20 pin P1 connector, and 2) soft power of 5 volts to the motherboard at all times |
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Term
| What is special about the ATX12V 1.3? |
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Definition
| 4 pin motherboard connector, 6 pin AUX connector |
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Term
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Definition
| Server System Infrastructure's response to the ATX12V 1.3; 24 pin motherboard connection |
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Term
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Definition
| Began the universal 24 pin connector, but is compatible with the older 20 pin connector. |
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Term
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Definition
| Small power supply form factor optimized for low profile ATX systems |
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Term
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Definition
| Small power supply form factor optimized for systems using the flex-ATX motherboards |
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Term
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Definition
| L-shaped power supply for microBTX systems |
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Term
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Definition
| Small supply form factor optimized for low profile BTX systems |
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Term
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Definition
| Active Power Factor Correction; eliminates harmonics and keeps your stuff safe. ALL POWER SUPPLIES SHOULD HAVE IT |
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Term
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Definition
| No; power supplies only provide as much power as a system needs. |
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Term
| If a power supply doesn't have an available power button, how can you start/stop the system? |
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Definition
| Short the jumpers with car keys or a screwdriver |
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Term
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Definition
| A fan for the power supply...duh. |
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Term
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Definition
| 3 pins, connects directly to the motherboard |
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Term
| What are three common fan sizes? |
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Definition
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Term
| What makes diagnosing power supplies so difficult? |
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Definition
| Gradual death of a power supply always causes intermittent failure rather than constant failure |
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Term
| What computer part fails more than any other? |
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