In my day job as a data systems engineer, I have been exploring ChatGPT to help find information and write quick code scaffolds. Today I was revisiting my knowledge of audio transformers and gave ChatGPT a go. The results were pretty amazing:
ChatGPT then proceeded to spit out a perfectly functional transformer calculator in HTML and javascript:
![1680371495003.png 1680371495003.png](https://cdn.imagearchive.com/groupdiy/data/attachments/59/59247-9f758c57e79f2d465e29b0de80c3944f.jpg)
While I wouldn't quite trust it yet to generate a circuit for you, as a way to summarise and explore your understanding, it is an amazing companion!
Prompt:
Have you read the Jensen transformers book 'Audio Transformers' by Bill Whitlock?
Response:
As an AI language model, I don't "read" books in the traditional sense, but I have access to a vast amount of information, including knowledge about various books and their contents up to my knowledge cutoff date in September 2021. I am familiar with the book "Audio Transformers" by Bill Whitlock, which was published by Jensen Transformers.
The book is a comprehensive guide to audio transformers, covering topics such as transformer theory, specifications, applications, and design considerations. It is highly regarded by audio professionals and enthusiasts alike for its in-depth exploration of transformer technology and its role in audio equipment.
If you have any questions related to the book or audio transformers, feel free to ask, and I will do my best to help you.
Prompt:
Based on information in the book. How is the reactive inductive reactance of a transformer calculated when the only information available are the primary and secondary impedances, the primary and secondary dc resistances, and the -3db corner frequency?
Response:
Based on the information given and considering the context of the book "Audio Transformers" by Bill Whitlock, we can approximate the reactive inductive reactance of a transformer using the following steps:
Calculate the turns ratio ( n ) using the square root of the ratio of secondary impedance (Z2) to primary impedance (Z1):
n = √(Z2 / Z1)
Calculate the inductive reactance (X_L) at the -3 dB corner frequency (f) for the primary winding:
X_L1 = 2 * π * f * L1
Since the -3 dB corner frequency is given, we can rearrange the formula to solve for L1 (primary inductance):
L1 = X_L1 / (2 * π * f)
Calculate the primary inductive reactance (X_L1) by subtracting the primary DC resistance (R1) from the primary impedance (Z1):
X_L1 = √(Z1^2 - R1^2)
Calculate the primary inductance (L1) using the formula from step 2:
L1 = X_L1 / (2 * π * f)
Calculate the secondary inductive reactance (X_L2) by subtracting the secondary DC resistance (R2) from the secondary impedance (Z2):
X_L2 = √(Z2^2 - R2^2)
Calculate the secondary inductance (L2) using the turns ratio ( n ) and primary inductance (L1):
L2 = L1 * n^2
Now, we have the primary and secondary inductances (L1 and L2) and their corresponding inductive reactances (X_L1 and X_L2).
Please note that these calculations are based on approximations and assumptions, as real-world transformers may have additional factors that influence their performance, such as core losses, leakage inductance, and parasitic capacitance. These calculations provide a starting point for understanding the behavior of the transformer but may not fully capture all the nuances of a specific transformer's performance.
Prompt:
Could you write a simple html page that takes each initial variable as an input in a form, and calculates each of the steps above using embedded javascript? Each steps should be labeled with the formula.
Response:
Certainly! Here's a simple HTML page with a form to input the initial variables, and embedded JavaScript to perform the calculations as described in the previous steps:
ChatGPT then proceeded to spit out a perfectly functional transformer calculator in HTML and javascript:
![1680371495003.png 1680371495003.png](https://cdn.imagearchive.com/groupdiy/data/attachments/59/59247-9f758c57e79f2d465e29b0de80c3944f.jpg)
While I wouldn't quite trust it yet to generate a circuit for you, as a way to summarise and explore your understanding, it is an amazing companion!