Search found 31 matches

by lsburden
Thu Jun 06, 2019 8:00 am
Forum: Test, Measurement and Repair
Topic: AudioTester is Back!
Replies: 14
Views: 64895

Re: AudioTester is Back!

Do you know of a USB solution?
Would AudioTester work with a USB interface?
by lsburden
Tue May 21, 2019 8:50 am
Forum: Test, Measurement and Repair
Topic: AudioTester is Back!
Replies: 14
Views: 64895

Re: AudioTester is Back!

This is really cool.

Is there a recommended audio card? What do you use?

This is not a set-up I am familiar with - how do you get signal in and out?
by lsburden
Mon Apr 22, 2019 8:41 am
Forum: Build
Topic: Simple pcb design program
Replies: 28
Views: 108243

Re: Simple pcb design program

I have used OrCAD (very old version), PCAD, PADs, Altium, Eagle, Diptrace, Circuit Maker, and Kicad. There were things that I liked and disliked about each one. At work I use Altium but we farm out PCB Design so I am not familiar with that side of it. I really like the schematic capture side. I trie...
by lsburden
Fri Mar 01, 2019 1:37 pm
Forum: Document
Topic: 36V DPOT
Replies: 4
Views: 15858

Re: 36V DPOT

that's pretty slick
by lsburden
Fri Mar 01, 2019 11:55 am
Forum: Document
Topic: 36V DPOT
Replies: 4
Views: 15858

Re: 36V DPOT

Look at section 5.1.2 Step Resistance. There may not be any linearity curves but there are step resistance specs. I have been looking at the AD5292. I was hoping to use them as I would a mechanical pot but so far am not happy with the distortion. I have also considered the MCP45HVX1 but I doubt its ...
by lsburden
Thu Feb 21, 2019 1:33 pm
Forum: Test, Measurement and Repair
Topic: Red Pitaya
Replies: 11
Views: 50828

Re: Red Pitaya

I'm unsure about how the bit depth relates to noise floor. When looking at an Oscilloscope I look at vertical scale resolution to figure out noise floor. This doesn't give a spec on the Oscilloscope page. How do you figure that out? The input and output voltage range is quite small. Would you need ...
by lsburden
Thu Feb 21, 2019 8:22 am
Forum: Test, Measurement and Repair
Topic: Red Pitaya
Replies: 11
Views: 50828

Re: Red Pitaya

Available at Mouser in various packages ranging from $240 to $720. https://www.mouser.com/Embedded-Solutions/Engineering-Tools/_/N-8mwys?Keyword=red+pitaya&FS=True Its really interesting. There are some youtube videos. There are already several applications available (scope, spectrum analyzer, f...
by lsburden
Wed Feb 20, 2019 2:00 pm
Forum: Test, Measurement and Repair
Topic: Red Pitaya
Replies: 11
Views: 50828

Red Pitaya

Anybody heard of the Red Pitaya?

https://www.redpitaya.com/
by lsburden
Wed Jan 30, 2019 2:33 pm
Forum: Test, Measurement and Repair
Topic: Bob Cordell: Build A High Performance THD Analyzer
Replies: 5
Views: 36246

Re: Bob Cordell: Build A High Performance THD Analyzer

Wow. You have given me quite a bit of reading to do and a collection of circuits to review that I have not seen before.
At one point I was really looking at an oscillator on a Linear Technology App Note, AN43, written by John Williams.