Thanks Joseph for your answer, I'm preparing a thread with your posts, the beefiest part of the whole discussion and worth to save from oblivion. Have a good time, yours, Moritz
thanks for your quick response, but i think it's not your post I mentioned: here the full text with the strange place in bold:
The reason why I chose the CSE187L current transformer is because it has a metal frame around the laminated core which is a convenient way to connect the ground of a two conductor shielded mic cable. Also connect the ground to one side of the thick wire string loop.
The string loop should be a very low resistance, usually measured in micro ohms to carry enough current to make a good output on the transformer output.
I chose the 500 turn current transformer because it produces an output closer to the range of a low impedance microphone, typically 150 ohms to about 300 ohms max. Most XLR mic inputs are about 2400 ohms actual input loading impedance to act as a bridging loan on the input source impedance of the mic or current transformer pickup.
When using the CSE187L if you bent the primary wires inward to short the primary and silver soldered this small loop together, you get an output moped an electrical on the current transformer of 80 ohms. All you need to do now is to look up the total resistance of the string loop wire. AWG 11 is 105 micro ohms per inch so a 6 inch string loop adds 630 micro ohms. Multiply 630 micro ohms by the turns ratio squared and get 157.5 ohms. Add this to the impedance of the transformer loop portion of the string loop and you get 237.5 ohms which is right near the upper limit to feed an XLR input. If you were to use a 1000 turn transformer you would have an output close to 1000 ohms and would be severely loaded down by the XLR input impedance.
in one of your contributions to the «induction pickup» thread you typed to a note pad there is a place I don't understand:
When using the CSE187L if you bent the primary wires inward to short the primary and silver soldered this small loop together, you get an output moped an electrical on the current transformer of 80 ohms.
Wayfinder left cigarboxnation destroying the «induction pickup» thread we are trying to reconstruct.
Joseph J. Rogowski's Comments
Comment Wall (3 comments)
You need to be a member of Cigar Box Nation to add comments!
Join Cigar Box Nation
Thanks Joseph for your answer, I'm preparing a thread with your posts, the beefiest part of the whole discussion and worth to save from oblivion. Have a good time, yours, Moritz
Joseph hi,
thanks for your quick response, but i think it's not your post I mentioned: here the full text with the strange place in bold:
The reason why I chose the CSE187L current transformer is because it has a metal frame around the laminated core which is a convenient way to connect the ground of a two conductor shielded mic cable. Also connect the ground to one side of the thick wire string loop.
The string loop should be a very low resistance, usually measured in micro ohms to carry enough current to make a good output on the transformer output.
I chose the 500 turn current transformer because it produces an output closer to the range of a low impedance microphone, typically 150 ohms to about 300 ohms max. Most XLR mic inputs are about 2400 ohms actual input loading impedance to act as a bridging loan on the input source impedance of the mic or current transformer pickup.
When using the CSE187L if you bent the primary wires inward to short the primary and silver soldered this small loop together, you get an output moped an electrical on the current transformer of 80 ohms. All you need to do now is to look up the total resistance of the string loop wire. AWG 11 is 105 micro ohms per inch so a 6 inch string loop adds 630 micro ohms. Multiply 630 micro ohms by the turns ratio squared and get 157.5 ohms. Add this to the impedance of the transformer loop portion of the string loop and you get 237.5 ohms which is right near the upper limit to feed an XLR input. If you were to use a 1000 turn transformer you would have an output close to 1000 ohms and would be severely loaded down by the XLR input impedance.
Joseph hi,
in one of your contributions to the «induction pickup» thread you typed to a note pad there is a place I don't understand:
When using the CSE187L if you bent the primary wires inward to short the primary and silver soldered this small loop together, you get an output moped an electrical on the current transformer of 80 ohms.
Wayfinder left cigarboxnation destroying the «induction pickup» thread we are trying to reconstruct.
Have a good time, Moritz
Welcome to
Cigar Box Nation
Sign Up
or Sign In
Or sign in with:
The Essential Pages
Site Sponsor
Recommended Links & Resources
Forum
Song lyrics for Steve's new song
Started by J. D. Woods in Performances, How to Play, Lessons, Concerts. Last reply by David L. 1 hour ago. 1 Reply 0 Likes
AI Search Query - Curious Answer
Started by Southern Ray in Other stuff - off topic, fun stuff, whatever. Last reply by A.D.EKER 19 hours ago. 4 Replies 0 Likes
UK - Best Place to Buy Cigar Box's
Started by Rich Butters in Building Secrets, Tips, Advice, Discussion. Last reply by Crazed Fandango yesterday. 4 Replies 0 Likes
Are metal frets necessary?
Started by J. D. Woods in Performances, How to Play, Lessons, Concerts. Last reply by J. D. Woods on Saturday. 7 Replies 1 Like
Busking Songs...
Started by Nomad Jack in Performances, How to Play, Lessons, Concerts. Last reply by J. D. Woods Apr 17. 7 Replies 2 Likes
Joseph J. Rogowski about Current Based Pickup Design
Started by Moritz Voegeli in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Apr 14. 6 Replies 2 Likes
crossover guitar.
Started by Timothy Hunter in Other stuff - off topic, fun stuff, whatever. Last reply by Timothy Hunter Apr 10. 14 Replies 3 Likes
Flat bucker under box top. Any Success?
Started by Tom T in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Apr 9. 9 Replies 0 Likes
Has anyone tried this? Thoughts?
Started by Southern Ray in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Apr 4. 7 Replies 1 Like
just came accross this pickup idea on youtube.
Started by Timothy Hunter in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Mar 27. 1 Reply 2 Likes
VIDEO: Building a CBG with limited resources.
Started by Taffy Evans in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Mar 10. 1 Reply 3 Likes
Free PDF Download: Vintage Guitar Effects Plans - 1967 Fuzzbox and 1969 Treble Boost
Started by Cigar Box Nation in Feature Articles. Last reply by BrianQ. Mar 9. 4 Replies 3 Likes
Tune up songs
Started by Ghostbuttons in Building Secrets, Tips, Advice, Discussion. Last reply by Timothy Hunter Mar 9. 5 Replies 1 Like
Duel output jacks
Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Taffy Evans Mar 8. 6 Replies 0 Likes
No Harmonics
Started by Ken I in Building Secrets, Tips, Advice, Discussion. Last reply by Brian partington Mar 8. 8 Replies 0 Likes
Camera suggestions?
Started by Southern Ray in Cool gear discussion - that's not cigar box related. Last reply by Southern Ray Mar 6. 5 Replies 0 Likes
CBG site issues, continued.
Started by Taffy Evans in Other stuff - off topic, fun stuff, whatever. Last reply by Taffy Evans Mar 5. 4 Replies 2 Likes
Anyone used a violin-style tailpiece on a CBG?
Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Carl Floyd Mar 1. 15 Replies 0 Likes
Guitar for the grandson
Started by Joe in Performances, How to Play, Lessons, Concerts. Last reply by Carl Floyd Feb 29. 13 Replies 0 Likes
Building with vintage paper/pressed board cigar boxes.
Started by Chance in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Feb 22. 12 Replies 1 Like
Blog Posts
I'll be fashionable this summer =)
Posted by Vlad on March 31, 2024 at 11:48pm 0 Comments 1 Like
Everyone can make CBG. And I did it =)
Posted by Vlad on March 6, 2024 at 2:32am 5 Comments 2 Likes
.✨. Cover Me ..♪♫•*¨*•. ~ the Delta Blues Outlaws
Posted by billy jones bluez on February 28, 2024 at 2:09pm 0 Comments 0 Likes
Q&A with Arkansas-based talented blues musician Billy Jones, one of the very best authentic modern artists
Posted by billy jones bluez on February 17, 2024 at 11:00pm 0 Comments 0 Likes
Big Power Bank for Small CBG =)
Posted by Vlad on February 11, 2024 at 1:06am 1 Comment 1 Like
Latest Activity
There i was Standing at the ..... BCB - A. D. Eker 2024
I Can Only Imagine: 2-String Chugger License Plate Cigar Box Guitar
Hopkins Lightnin 1 and 2
Anti-Body Guitars 18,19 and 20
Angel 2x Anti-Body #17
Song lyrics for Steve's new song
There i was Standing at the ..... BCB - A. D. Eker 2024
There i was Standing at the ..... BCB - A. D. Eker 2024
Anti-Body Guitars 18,19 and 20
There i was Standing at the ..... BCB - A. D. Eker 2024
CigarBoxGuitar.com Knowledgebase Articles
Add a Panel-Mount Gain to a C. B. Gitty Amp Board
Cigar Box Guitar Building Tip: Neck Reinforcement with Humbuckers
A Step-by-Step Guide On How To Make a Straight Headstock
Cigar Box Ukulele Kit Assembly Guide
Advanced Cigar Box Guitar Building guide by Joshua Gayou
“Open A” AEA Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
“Open E” EBE Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
“Open D” DAD Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
“Open G” GDG Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
Diatonic (Dulcimer-Style) Fretting – What it is, How and Why to Use It
Events
Republic of Texas CBG Festival (8th Annual)
May 11, 2024 from 11am to 8pm – Speakeasy Grill
0 Comments 0 Likes20th Annual Cigar Box Guitar Festival (Day 1)
May 30, 2024 from 6:30pm to 10pm – The Casual Pint of Huntsville
0 Comments 0 Likes20th Annual Cigar Box Guitar Festival (Day 2)
May 31, 2024 from 6:30pm to 10pm – Wicks Family Field at Joe Davis Stadium
0 Comments 0 Likes20th Annual Cigar Box Guitar Festival (Day 3, Daytime)
June 1, 2024 from 11am to 3pm – Lowe Mill ARTS & Entertainment
0 Comments 0 Likes20th Annual Cigar Box Guitar Festival (Day 3 Evening
June 1, 2024 from 6:30pm to 10pm – The Orion Amphitheater
0 Comments 0 LikesMusic