Anything not covered elsewhere.
Bruce Weldy
Posts: 8539 Joined: Fri Nov 27, 2009 11:37 amLocation: New Braunfels, TX
#16
Post
by Bruce Weldy Sat Sep 20, 2014 10:57 am
Bill Fitzmaurice wrote: byacey wrote: I think we've had a similar discussion before regarding this.
My conclusions are based on having actually tried it. It doesn't work, the load impedance being too high compared to the bulb resistance.
Resistance is futile.....
- Gene Luke Pickered
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
byacey
Posts: 947 Joined: Thu Jun 14, 2012 9:09 amLocation: Edmonton, Alberta, Canada
#17
Post
by byacey Sat Sep 20, 2014 2:31 pm
The bulb resistance curve characteristics are important in selecting a workable bulb. It's not difficult to find a bulb with a high enough hot filament resistance, but a juggle between voltage and current to find one that will start using significant power close to where you want the maximum output from the piezos.
If anyone is interested, I'll take some measurements and report back with an appropriate bulb type.
A quick search on the net produced this article for those that may want to read more about piezos:
https://www.grc.com/acoustics/CTS_Piezo ... ppNote.pdf Built
Tom Smit
Posts: 7569 Joined: Sat Jan 05, 2008 1:24 pmLocation: Sarnia, Ont. Canada
#18
Post
by Tom Smit Sat Sep 20, 2014 11:56 pm
Bruce Weldy wrote:
Jean Luc Picard.
There, fixed it for you.
TomS
Bruce Weldy
Posts: 8539 Joined: Fri Nov 27, 2009 11:37 amLocation: New Braunfels, TX
#19
Post
by Bruce Weldy Sun Sep 21, 2014 6:10 am
Tom Smit wrote:
Jean Luc Picard.
There, fixed it for you.
Who's that?
Don't you know hillbilly when you see it?
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Tom Smit
Posts: 7569 Joined: Sat Jan 05, 2008 1:24 pmLocation: Sarnia, Ont. Canada
#20
Post
by Tom Smit Sun Sep 21, 2014 11:34 pm
Hah! I guess I don't!
TomS
ripNdeb
Posts: 512 Joined: Fri Sep 24, 2010 4:57 pmLocation: Eureka, CA
Contact:
#21
Post
by ripNdeb Mon Sep 29, 2014 11:51 am
Tom Smit wrote: Bruce Weldy wrote:
Jean Luc Picard.
There, fixed it for you.
The Borg....there, fixed it for you
2X OTop 112, 3012HO, melded -
2X T39, 27", Lab 12 -
XF 212 -
4 DR250, 2 melded, 2 straight
2 20" T39 3012LF - WH10 - WH8 - in the shop - 2 more 20" T39s
http://saltandlighteureka.org still need a trailer
Ryan Sober
Posts: 204 Joined: Sat Feb 01, 2014 8:34 pmLocation: Birmingham, AL
#22
Post
by Ryan Sober Mon Sep 29, 2014 11:56 am
ripNdeb wrote: Tom Smit wrote: Bruce Weldy wrote:
Jean Luc Picard.
There, fixed it for you.
The Borg....there, fixed it for you
Lol, beat me to it.
Bruce Weldy
Posts: 8539 Joined: Fri Nov 27, 2009 11:37 amLocation: New Braunfels, TX
#23
Post
by Bruce Weldy Mon Sep 29, 2014 4:43 pm
The Borg....there, fixed it for you
Lol, beat me to it.
Alright....we're going into full geek mode here......Picard was a Borg for a while.....remember Locutus?
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
ripNdeb
Posts: 512 Joined: Fri Sep 24, 2010 4:57 pmLocation: Eureka, CA
Contact:
#24
Post
by ripNdeb Mon Sep 29, 2014 6:21 pm
Yea, and Data too; but, fortunately they both resisted and were saved by their faithful colleagues.
2X OTop 112, 3012HO, melded -
2X T39, 27", Lab 12 -
XF 212 -
4 DR250, 2 melded, 2 straight
2 20" T39 3012LF - WH10 - WH8 - in the shop - 2 more 20" T39s
http://saltandlighteureka.org still need a trailer
Bruce Weldy
Posts: 8539 Joined: Fri Nov 27, 2009 11:37 amLocation: New Braunfels, TX
#25
Post
by Bruce Weldy Mon Sep 29, 2014 7:35 pm
ripNdeb wrote: Yea, and Data too; but, fortunately they both resisted and were saved by their faithful colleagues.
so, resistance is just kinda' futile?
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
ripNdeb
Posts: 512 Joined: Fri Sep 24, 2010 4:57 pmLocation: Eureka, CA
Contact:
#26
Post
by ripNdeb Mon Sep 29, 2014 9:12 pm
Bruce Weldy wrote: ripNdeb wrote: Yea, and Data too; but, fortunately they both resisted and were saved by their faithful colleagues.
so, resistance is just kinda' futile?
Only on the weak minded.....woops, wrong series
2X OTop 112, 3012HO, melded -
2X T39, 27", Lab 12 -
XF 212 -
4 DR250, 2 melded, 2 straight
2 20" T39 3012LF - WH10 - WH8 - in the shop - 2 more 20" T39s
http://saltandlighteureka.org still need a trailer
Ryan Sober
Posts: 204 Joined: Sat Feb 01, 2014 8:34 pmLocation: Birmingham, AL
#27
Post
by Ryan Sober Tue Sep 30, 2014 9:01 am
Bruce Weldy wrote:
so, resistance is just kinda' futile?
Resistance is futile below 1Ohm.
Bruce Weldy
Posts: 8539 Joined: Fri Nov 27, 2009 11:37 amLocation: New Braunfels, TX
#28
Post
by Bruce Weldy Tue Sep 30, 2014 11:31 am
Ryan Sober wrote: Bruce Weldy wrote:
so, resistance is just kinda' futile?
Resistance is futile below 1Ohm.
With one buddhist chanting, you get 1 ohmmmmmmm
With four buddhists chanting, you get 4 ohmmmmmms
Either way, there is no resistance.
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
ripNdeb
Posts: 512 Joined: Fri Sep 24, 2010 4:57 pmLocation: Eureka, CA
Contact:
#30
Post
by ripNdeb Wed Oct 01, 2014 11:03 am
LOL Leland
2X OTop 112, 3012HO, melded -
2X T39, 27", Lab 12 -
XF 212 -
4 DR250, 2 melded, 2 straight
2 20" T39 3012LF - WH10 - WH8 - in the shop - 2 more 20" T39s
http://saltandlighteureka.org still need a trailer
