New Engineering Note Added: Two Ways of Looking Into Things
New Engineering Note Added: Two Ways of Looking Into Things
We have added a new technical resource to our Engineering Notes library, continuing our commitment to sharing practical engineering knowledge with our members
Engineering Note 43 – Two Ways of Looking Into Things, written by John Woodgate HonFInstSCVE, explores two fundamental but complementary ways of analysing electrical systems. It helps engineers better understand what is really happening when we “look into” a circuit or device.
What’s covered in this Engineering Note?
- Using clear explanations and worked examples, the note explores:
- How complex electrical devices can be represented by simple equivalent circuits
- Why different analytical approaches can describe the same system
- How these principles apply equally to DC and AC systems
- Practical examples, including “black box” circuits, amplifiers, and professional microphone capsules
The note introduces concepts commonly known as Thévenin’s and Norton’s theorems, showing how they can be applied in real-world engineering analysis and fault-finding.
Access the Engineering Note
Engineering Note 43 – Two Ways of Looking Into Things is now available in the ISCVE Engineering Notes section of the website.
Engineering Notes are free to access and form part of ISCVE’s wider technical resource library, supporting ongoing professional development across the industry.

