Search found 82 matches

by brianroth
Sat Jun 08, 2019 5:48 am
Forum: The Peabody Lounge
Topic: Loss of small market radio
Replies: 2
Views: 69

Loss of small market radio

https://www.theguardian.com/tv-and-radi ... -with-them

Here they are, struggling along:

http://www.willcoxradio.com/

Glad that as a youngster in early 1970's that I bailed out of the biz.

Sad.

Bri
by brianroth
Tue Jun 04, 2019 7:51 pm
Forum: The Peabody Lounge
Topic: Something to ponder about IoT
Replies: 22
Views: 404

Re: Something to ponder about IoT

No smart phone here either; I'm from the wrong generation that has to constantly being on texting, Facebook or Snapchat, whatever. In fact, it's annoying when I'm with friends (quite a bit younger than I am) and they are constantly "glued" to their phones with all the beeps/whistles/etc that COMMAND...
by brianroth
Mon Jun 03, 2019 7:32 pm
Forum: The Peabody Lounge
Topic: Something to ponder about IoT
Replies: 22
Views: 404

Something to ponder about IoT

https://www.fastcompany.com/90358396/th ... use-the-ac

OOPS! Everything in my freezer just melted 'cuz a Cloud server went down....

Something just occurred to me. IoT IdioT

lol


Bri
by brianroth
Fri May 24, 2019 8:50 pm
Forum: Build
Topic: shielding enclosure for prototyping
Replies: 6
Views: 583

Re: shielding enclosure for prototyping

Wayne, I'm almost certain that the boxes shown in my Trident module PSU pics (shown above) were 6x6x4, but purchased here in Salina from one of the local electrical jobber houses. I do recall buying some of those from Home Depot when I lived in OKC. Alas, no Depot here....Lowes and Menard's (which i...
by brianroth
Wed May 22, 2019 10:26 pm
Forum: Build
Topic: shielding enclosure for prototyping
Replies: 6
Views: 583

Re: shielding enclosure for prototyping

Onwards to my research. I dunno if I can post all this into one email. If not, then followups.

First is my collection of part numbers. If all goes well, then catalog pages/cut sheets.

Bri
by brianroth
Wed May 22, 2019 10:14 pm
Forum: Build
Topic: shielding enclosure for prototyping
Replies: 6
Views: 583

Re: shielding enclosure for prototyping

For many years, I've used the the steel NEMA boxes to house custom power supplies, typically with Power-One/whatever "open frame linear" modules mounted inside. In a few cases, I even bolted the NEMA box onto a 19" blank plate so the assembly could be rack mounted. Hmmmmm...no pix of the bigger buil...
by brianroth
Sat May 18, 2019 8:31 pm
Forum: Build
Topic: shielding enclosure for prototyping
Replies: 6
Views: 583

shielding enclosure for prototyping

Now this is turning into "over thinking" for me....lol Recent threads here about the phono preamp and noise abatement for measurements stirred up months/years ago memories. Recent discussions also involved using pots and pans from the kitchen for shielding! Back to my earlier thoughts. Find a decent...
by brianroth
Mon Apr 29, 2019 7:22 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 441
Views: 162823

Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

I found some deep drawn steel pans made for a buffet steam table that work pretty well as a magnetic shielding chamber. I wonder if a cast iron pan would work well for magnetic shielding of a prototype! I no longer have the Lodge skillet my wife used from time to time. After she passed in 2013 and ...
by brianroth
Sun Apr 28, 2019 8:26 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 441
Views: 162823

Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

How about using a Hoffman "screw cover pull box" without the knock-outs as an outer shell? Widely available from electrical supply distributors. Heavy gauge steel. I'm thinking about getting a decently sized one...maybe 8x8 or larger....and poking Neutrik XLR and TRS jacks into the side along with s...
by brianroth
Tue Mar 26, 2019 8:34 pm
Forum: Test, Measurement and Repair
Topic: entropy continued?
Replies: 34
Views: 3518

Re: entropy continued?

OK, cool! That same guy posted some same/some different pix and comments at GDIY:

https://groupdiy.com/index.php?topic=72102.0

Some different insights in that discussion.

Bri