Discussion Overview
The discussion revolves around converting a Fisher Price baby swing from battery power to a DC adaptor. Participants explore the specifications of the swing's power requirements, the suitability of various chargers, and the potential issues arising from using inadequate power supplies.
Discussion Character
- Technical explanation
- Debate/contested
Main Points Raised
- One participant notes that the swing operates on 4 D batteries and that their attempt to use a 6V DC charger with a 400mA output did not work as expected, leading to noise and inadequate swinging.
- Another participant suggests that the swing may draw more than 400mA momentarily, recommending the use of a voltmeter to monitor voltage during operation.
- A participant requests guidance on the appropriate mA rating for the adaptor, expressing a lack of tools to measure current.
- It is proposed that using a larger charger, potentially supplying 1 or 1.5 amps, might resolve the issue, while also considering the possibility of other problems with the charger itself.
- Some participants mention trying chargers rated at 500mA and 600mA, but report no improvement, raising the question of whether to try a charger rated above or below these values.
- One participant raises the issue of AC ripple potentially causing noise, suggesting that a supply with less ripple might be necessary.
- There is mention of a search for a compatible Fisher swing adaptor that reportedly has a 100mA output, with one participant arguing against using such a low-rated adaptor.
- Another participant suggests using rechargeable NiMH cells as an alternative power source, indicating that one set could be charged while the other is in use.
- Concerns are raised about the current draw of the swing, with a participant emphasizing the need for a high current power supply rather than a low current charger.
- There is a debate regarding the interpretation of the charger specifications, particularly the meaning of "2.4VA" and whether it indicates AC or DC output.
- Clarifications are made regarding the terminology used, with some participants discussing the distinction between a charger and an adaptor.
Areas of Agreement / Disagreement
Participants express multiple competing views regarding the appropriate power supply for the swing, with no consensus on the best solution or the specifications needed. The discussion remains unresolved with differing opinions on the necessary current ratings and the implications of charger specifications.
Contextual Notes
Participants highlight limitations in their ability to measure current and voltage, which may affect their ability to diagnose the issue accurately. There is also uncertainty regarding the compatibility of various power supplies and the implications of AC ripple on performance.