Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Equipment & Tools From test equipment to hand tools

Curve Tracer or Audio Analyser?
Curve Tracer or Audio Analyser?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 22nd December 2019, 01:40 PM   #1
benc is offline benc  United Kingdom
diyAudio Member
 
Join Date: Apr 2010
Location: Ipswich
Default Curve Tracer or Audio Analyser?

I'm now a full-time instrument maker, and thinking about how I allocate resources in 2020. I've been into DIY hifi since a teenager and want to resurrect two pet projects (1. Curve Tracer and 2. Audio Analyser) for my little company (Electron Plus) - thinking about which might have the most impact. Would love to hear feedback, what people are using and perhaps what's on their wishlist. The very basic specs as I left them before I got busy with sub-contract work:

Curve Tracer
PC connected
-200 to +200V collector supply
-20 to +20V / -200mA to +200mA step generator
<1uA to >5A
Dual channel option/version
2nd step generator/SMU option/version.

Audio Analyser
2channels
Fully floating input and fully floating output sections
>+20dBV outputs
Balanced ins and outs
48/96/192 and possibly 768KHz rates

I built working prototypes of both a few years back - but would probably refresh both designs (certainly restart the digital side of things). Probably got enough resource to do one of these projects only.
  Reply With Quote
Old 23rd December 2019, 04:12 AM   #2
Calvin is offline Calvin  Germany
diyAudio Member
 
Calvin's Avatar
 
Join Date: Nov 2004
Location: close to Basel
Hi,

I'd opt for a curve tracer since there's almost nothing around.
With countless soundcards and tons of free software, as well as very good affordable audio analyzers on the market another audio analyzer seems to make not much sense.
Curve tracers on the other hand are a rare breed. Those few existing projects restrict to rather low voltage and current ranges.
There's almost nothing that can do power transistor characterization.
Personally I would like to see something like a modernized Tek 576, with PC control and a modular concept which allows for scaling up voltage and current levels.

jauu
Calvin
  Reply With Quote
Old 23rd December 2019, 07:51 AM   #3
benc is offline benc  United Kingdom
diyAudio Member
 
Join Date: Apr 2010
Location: Ipswich
Thanks Calvin for the comments.
There certainly seems to be more AA's available than when I last looked, and the CT is closer to production. Tek's 576 and 370 have been on my watchlist for long time. What would you say is the upper limit on useful voltage and current. Is 200V/5A enough?
  Reply With Quote
Old 23rd December 2019, 08:11 AM   #4
Jazid is offline Jazid  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
If you can get the tracer to cover valve ranges as well then that would extend your customer base. Of course that would require heater supplies and screen voltages as well but an 'all in one' tracer would be an asset on many a DIYers bench. If you visit the tube testers forum there's a chap there (Dennis) who has made a pcb to convert 576 tracers to test valves and can offer amazing info.

I agree that an audio analyser is possibly a common enough tool that you'd be pushed to offer anything either good enough or cheap enough to compete with existing products. Look at the RTX project, all the goodwill and effort it could garner, but it went out of production promptly Curve Tracer or Audio Analyser?
  Reply With Quote
Old 23rd December 2019, 08:35 AM   #5
benc is offline benc  United Kingdom
diyAudio Member
 
Join Date: Apr 2010
Location: Ipswich
Hi Jazid - certainly possible to add heater supply (probably have to be DC). 2nd screen might be more problematic.
  Reply With Quote
Old 23rd December 2019, 09:57 AM   #6
thermionic is offline thermionic  United Kingdom
diyAudio Member
 
Join Date: Jan 2004
Location: UK
If you are in the market for a CT, then by default you are probably not averse to DIY-ing your own. If you do some research I suspect you might find there to be a surprising amount of kits out there. They may not all be supported / in production, though. My feeling is that an AA is less likely to be in competition with diy kits and other small OEMs. As an owner of 4 AAs, I feel they all have some drawback or other. I don't understand why in 2019 there isn't something as convenient as a DScope, but with THD+N spec to rival the UPV or 2722. I would buy that (assuming the SW isn't clunky - which it is in the case of most AAs).
  Reply With Quote
Old 23rd December 2019, 10:01 AM   #7
thermionic is offline thermionic  United Kingdom
diyAudio Member
 
Join Date: Jan 2004
Location: UK
Most of the DIY CTs I have seen were from plans, not complete kits. If yours is convenient and affordable maybe it will do well.
  Reply With Quote
Old 23rd December 2019, 11:05 AM   #8
benc is offline benc  United Kingdom
diyAudio Member
 
Join Date: Apr 2010
Location: Ipswich
Thanks Thermionic for the comments. I've spent time with both the UPV, DScope3, 8903 and used to own an Amber 4400 - still own a few others (W&G SPM11/SPMZ110, Ferrograph, various HP). Speed of use and ease of setup is really important to me - I dread having to learn yet another interface and even returning to a piece of gear that I haven't used for a few months can be daunting. Affordability will be the biggest challenge; may need to make more than one model in-order to cover several different 'industries' and price points - that said I might be able to fuse the CT project with another project here and that would help alot in justifying the expense.
  Reply With Quote
Old 23rd December 2019, 11:17 AM   #9
lisoformio is offline lisoformio  Italy
diyAudio Member
 
lisoformio's Avatar
 
Join Date: May 2008
Location: near Florence
Curve tracer
  Reply With Quote
Old 23rd December 2019, 12:50 PM   #10
Mark Tillotson is offline Mark Tillotson
diyAudio Member
 
Join Date: May 2018
Location: Cambridge UK
Will the dual channel option allow both matching identical transistors and complementary pairs?
  Reply With Quote

Reply


Curve Tracer or Audio Analyser?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Curve Tracer avincenty Equipment & Tools 356 10th July 2018 08:30 AM
Curve Tracer Stefanoo Equipment & Tools 97 8th September 2017 02:01 PM
curve tracer barclaycon Equipment & Tools 7 6th March 2017 01:18 PM
GB for DIY Curve Tracer for PC Lazybutt Group Buys 190 24th November 2013 11:17 PM
Curve Tracer sdman Solid State 0 21st February 2012 01:36 PM


New To Site? Need Help?

All times are GMT. The time now is 01:51 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki