This is the reprint date. Top centre of page 1 “October 1974”
Yes… subtle comments about unregulated supplies and a couple of references to current. The application notes must have been edited by sales and law departments.
An almost throwaway comment in the Conclusion reads: “particularly at lower frequencies”.
45 years of experience later, to me, that reads as “don’t use for high frequencies”
I have read the document and specially adjusted the capacitor size, but the test did not work. The step time parameters were increased, and the operation time was very long, so it was easy to fail