UD5 Ensamblado de equipos microinformáticos 5
Understanding Power Supply Efficiency
Importance of Power Supply Sources
- The discussion begins with an emphasis on the significance of power supply sources and their efficiency in computing systems.
- Examples are provided to illustrate how to search for power supplies based on certification, specifically focusing on the 80 Plus Gold standard.
Searching for Components
- The speaker navigates through various websites like PC Box and emphasizes the importance of filtering components by certification categories.
- A comparison is made between different power supply categories, highlighting nominal power ratings (600W, 900W), which are common in consumer electronics.
Understanding Certification Standards
- The classification system for power supplies is explained, noting that 80 Plus certifications indicate efficiency levels that are crucial for performance.
- It is noted that most microcomputer setups typically require power supplies rated between 600W and 900W due to their adequate capacity for component demands.
Calculating Efficiency
- An example calculation is introduced using an 850W power supply under a hypothetical load scenario to demonstrate efficiency metrics.
- The speaker explains how to calculate actual consumption based on a 50% load, leading into discussions about expected efficiency rates.
Impact of Efficiency Ratings
- A detailed breakdown shows that with a high-efficiency rating (90%), less energy is wasted as heat compared to lower-rated supplies (80%).
- The calculations reveal significant differences in energy loss depending on the chosen efficiency rating, illustrating practical implications for users.
Real-world Implications of Power Supply Choices
- A comparative analysis highlights the difference in energy loss between using an 80 Plus Gold versus an 80 Plus White certified supply.
Cost Implications of Energy Consumption in Computing
Understanding the Cost of Energy Usage
- The discussion begins with the financial implications of energy consumption, specifically referencing a cost associated with "kino mate" and its impact on company expenses. It highlights that costs can accumulate based on kilowatt usage.
- A calculation is introduced where 15 cents per kilowatt-hour is multiplied by daily usage to estimate total costs, emphasizing the importance of understanding these figures for budgeting.
- The speaker notes that companies with numerous computers (e.g., 100 units) may face significant additional charges—potentially around €3,000—due to energy inefficiencies over time.
Long-term Financial Considerations
- The potential for compensating energy costs within two years is discussed, suggesting that investing in more efficient power sources could lead to savings despite higher initial expenditures.
- A comparison is made between standard and high-efficiency power supplies, indicating that while upfront costs may be higher (e.g., €30 difference per unit), long-term savings are achievable through reduced electricity bills.
Efficiency and Power Supply Characteristics
- Emphasis is placed on the importance of efficiency when purchasing multiple computing units. The speaker urges consideration of how long equipment will operate and its impact on electricity costs.
- Transitioning to discussing power supply characteristics, particularly focusing on Power Factor Correction (PFC), which affects overall efficiency ratings.
Importance of Power Factor Correction
- PFC's role in measuring energy loss due to inefficiencies is explained. An active PFC close to 100% ensures better performance compared to passive alternatives.
- The speaker elaborates on internal energy losses from components like coils and capacitors, which can contribute to electromagnetic radiation losses alongside heat dissipation.
Active vs Passive Power Factor Correction
- It’s highlighted that without an active PFC circuit, efficiency ratings may not reflect true performance due to additional losses incurred from electromagnetic phenomena.
- Recommendations are made for ensuring power supplies have active PFC systems; otherwise, users might experience significant inefficiencies leading to increased operational costs.
Connector Specifications and Requirements
- Discussion shifts towards connector specifications necessary for various devices powered by these supplies. Proper voltage levels and formats must be adhered to ensure compatibility.
- The number of output cables from a power supply becomes crucial as it determines how many devices can be effectively powered while maintaining optimal performance levels.