RE: Here is a little tutorial on square waves and their importance. - Bold Eagle - Vintage Asylum

Vintage Asylum

Classic gear from yesteryear; vintage audio standing the test of time.

RE: Here is a little tutorial on square waves and their importance.

In Reply to: Here is a little tutorial on square waves and their importance. posted by Michael Samra on September 16, 2016 at 04:56:56:

Mike,

Great source (ESP) of articles. A great tutorial on square wave testing. It was popular back in the 50's; but seems to have faded a good bit since. Ability to use square waves is just one of the reasons I prefer a function generator over the lower distortion of an oscillator.

The ringing you describe on the HF87 is very likely a transformer artifact as you suspect. I haven't looked up the schematic for that amp; but the HF20 has a small capacitor between one plate tap and the center tap to stop oscillations. It also has to be on the correct plate tap, which tells me there is an asymmetry in the X-frmr construction. (X-frmr; yet another shorthand for transformer)

Jerry

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Follow Ups Full Thread

Topic - Here is a little tutorial on square waves and their importance. - Michael Samra 04:56:56 09/16/16 (7)

RE: Here is a little tutorial on square waves and their importance. - hahax@verizon.net 18:47:30 09/16/16 (1)

RE: Here is a little tutorial on square waves and their importance. - Crazy Dave 11:24:49 09/19/16 (0)

RE: Here is a little tutorial on square waves and their importance. - Bold Eagle 07:42:24 09/16/16 (1)

RE: Here is a little tutorial on square waves and their importance. - Michael Samra 23:41:24 09/17/16 (0)

That's a test - E-Stat 07:03:35 09/16/16 (1)

RE: That's a test - Eli Duttman 07:49:55 09/16/16 (0)

Thanks (nt) - Vinyl Valet 06:52:17 09/16/16 (0)

Follow Ups

RE: Here is a little tutorial on square waves and their importance. - Bold Eagle 07:42:24 09/16/16 (1)

RE: Here is a little tutorial on square waves and their importance. - Michael Samra 23:41:24 09/17/16 (0)

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