Talk:Armstrong oscillator

Original configuration

Presumably the original Armstrong oscillator used a valve, rather than a transistor. Shouldn't this be mentioned for historical accuracy? Biscuittin (talk) 23:12, 1 March 2008 (UTC)

Diagram to be fixed

Article refers to L and T in diagram, but the diagram is completely unlabeled. —Preceding unsigned comment added by 66.27.97.206 (talk) 23:20, 2 August 2009 (UTC)

Merge proposal

This article has all of the information contained in Armstrong (tickler) oscillator and more. Not sure how much "merging" is needed, perhaps just a redirect page on the other article would work. —A 17:17, 4 March 2008 (UTC)

• Since everything is already at the Armstrong oscillator article, I redirected the other article to it.147.70.242.40 (talk) 21:50, 14 March 2008 (UTC)

Need to correct German Meissner Patent information

In the references, the German Patent for Alexander Meissner is referred to as Number 219,604. However, this might be a wrong number, as the retrieval with Espacenet [1] gives a completely different subject.

I was unable to locate the patent neither in Espacent nor in German DEPATISNET, although several patents of Alexander Meissner are found.

Could the author please check its sources? It would be very valuable; and I would like to help searching, if I get more information where this reference has been found.

Rainglasz (talk) 19:22, 26 December 2009 (UTC)

Found just (in German Wikipeia) the corresponding US Patent: US1924796. German Priority of April 9, 1913 is claimed, and the German specification is DE298862

Rainglasz (talk) 10:17, 31 December 2009 (UTC)

The '862 German Patent is a follow-up, the originally given number had the right digits, but two of them interchanged: DE291604 —Preceding unsigned comment added by Rainglasz (talk • contribs) 13:20, 31 December 2009 (UTC)

Patent

The patent of Meissner is from 1913, a year before Armstron. that is all.

The strange policy of American patent authoryty at those times is much too well known!. — Preceding unsigned comment added by 93.221.229.226 (talk) 06:31, 17 October 2011 (UTC)

What's your point? ICE77 (talk) 00:58, 1 August 2015 (UTC)

Questions

1. How "weak" should the coupling be? What should be the value of L2 in proportion to L1? Is the JFET the only option or a MOSFET would also work?

2. "Many publications, however, embrace both variants with either name." Only a Meissner variant is introduced. What is the other variant? Is it the Armstrong variant? It's not clear.

3. Has anybody been able to simulate the provided schematic in this article and obtained oscillation?

ICE77 (talk) 00:59, 1 August 2015 (UTC)