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Review
. 2023 Feb;23(2):61-65.
doi: 10.1016/j.bjae.2022.11.007. Epub 2022 Dec 29.

Electricity, magnetism and circuits

M A Tooley  1   2
Affiliations
Review

Electricity, magnetism and circuits

M A Tooley. BJA Educ. 2023 Feb.
No abstract available

Keywords: electrical circuits; electrical components; electrical supply.

PubMed Disclaimer

Conflict of interest statement

The author declares that he has no conflicts of interest.

Figures

Figure 1
Fig. 1
Capacitor charging circuit showing components and the corresponding current and voltage waveforms across the capacitor C (reproduced with permission from Magee and Tooley, The Physics, Clinical Measurement and Equipment of Anaesthetic Practice).
Figure 2
Fig. 2
Inductor circuit showing components and the corresponding voltage and current waveforms (reproduced with permission from Magee and Tooley, The Physics, Clinical Measurement and Equipment of Anaesthetic Practice).
Figure 3
Fig. 3
Simple circuit with battery of 9 V and resistor of 1 M (reproduced with permission from Magee and Tooley, The Physics, Clinical Measurement and Equipment of Anaesthetic Practice).
Figure 4
Fig. 4
Diagram of a transformer showing turns around an iron core. Also shown is the circuit diagram of a voltage supplied to the transformer of 230 V RMS being stepped down to 23 V RMS (reproduced with permission from Magee and Tooley, The Physics, Clinical Measurement and Equipment of Anaesthetic Practice).
Figure 5
Fig. 5
Diagram of the domestic mains supply supplying class 1 equipment. The equipment has a load of 230 Ω, so the normal current would be 1 A. The case of the equipment is earthed. The leakage current by capacitance is shown by C. See text for details. Reproduced with permission from Magee and Tooley, The Physics, Clinical Measurement and Equipment of Anaesthetic Practice.
See this image and copyright information in PMC

References

    1. Magee P., Tooley M. 2nd Edn. Oxford University Press; Oxford: 2011. The Physics, Clinical Measurement and Equipment of Anaesthetic Practice. For more information on this topic, please refer to.