Discussion Overview
The discussion revolves around the suitability of using an industrial limit switch to control power to a desktop PC, particularly in relation to the switch's AC-15 utilization category. Participants explore the implications of this rating for electromagnetic loads and the challenges of using limit switches in this context.
Discussion Character
- Debate/contested
- Technical explanation
- Exploratory
Main Points Raised
- One participant questions whether the AC-15 rating, which is typically much lower than the switch's rated capacity, applies to desktop PCs, suggesting that PCs may not have significant transformers.
- Another participant expresses confusion about the use of limit switches for controlling a computer, indicating that limit switches are generally used for motors and mechanical items.
- There is a suggestion that relays are more appropriate for higher power applications than limit switches, raising doubts about the rationale for using a limit switch for a desktop PC.
- A participant mentions the need to rule out relays since the switch will serve as a mains isolation switch, indicating that there will be no power available to drive a solenoid.
- Concerns are raised about inrush current from the switch mode power supply (SMPS) and its impact on the limit switch, with a participant noting symptoms of significant inrush when plugging in devices.
- One participant asks for clarification on the purpose of the isolation switch, suggesting that alternate solutions may exist if the intent is better understood.
- A participant shares a detailed plan for a steampunk-style PC build, describing the desired functionality of the lever switch as an isolator and outlining potential fallback options involving different types of switches.
- Another participant proposes using mains voltage rated relays that could be driven by a limit switch or microswitch, suggesting this as a more feasible solution without needing additional voltages.
- There is a discussion about using a microwave oven door switch as a potential solution, highlighting its design for handling large currents and the importance of selecting the correct type of switch.
Areas of Agreement / Disagreement
Participants express various viewpoints on the appropriateness of limit switches for controlling desktop PCs, with no consensus reached on whether the AC-15 rating includes desktop applications. Multiple competing views remain regarding the best approach to achieve the desired isolation functionality.
Contextual Notes
Limitations include the unclear applicability of AC-15 ratings to desktop PCs, the potential for significant inrush current affecting switch performance, and the specific requirements for isolation in the proposed PC build.
