HacDC Wiki - User contributions [en]

Electron Tube Class

2011-07-29T22:56:06Z

AlonzoTG: /* Schedule */

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== News ==

The first session was a great success. We covered the first item in the sillibus and part of the second.

The next session will feature a brief review of the first session and finish covering the second section. I think it should be possible to reach the section on advanced circuits. during the next session.

I also owe you guys a tube dissection, I'll try to work that into the next session too.

== Schedule ==

Next class: Aug 11 at 7:30 PM.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits and coupling
* Push-pull and Phase splitting circuits
* Transformers in single-ended and push-pull.
* Advanced circuits
* Tube failure modes

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* Power supplies and tweaking.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-29T07:21:43Z

AlonzoTG:

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== News ==

The first session was a great success. We covered the first item in the sillibus and part of the second.

The next session will feature a brief review of the first session and finish covering the second section. I think it should be possible to reach the section on advanced circuits. during the next session.

I also owe you guys a tube dissection, I'll try to work that into the next session too.

== Schedule ==

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits and coupling
* Push-pull and Phase splitting circuits
* Transformers in single-ended and push-pull.
* Advanced circuits
* Tube failure modes

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* Power supplies and tweaking.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-18T22:56:29Z

AlonzoTG:

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== Schedule ==

A lecture session has been scheduled in the space for Thursday July 28 at 7:30pm.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits
* Phase splitting circuits
* Advanced circuits
* Tube failure modes

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* Power supplies and tweaking.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-18T18:16:59Z

AlonzoTG:

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== Schedule ==

Not yet determined.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits
* Phase splitting circuits
* Advanced circuits
* Tube failure modes

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* Power supplies and tweaking.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-04T19:43:04Z

AlonzoTG: /* Silly Bus */

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== Schedule ==

Not yet determined.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits
* Phase splitting circuits
* Advanced circuits

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* Power supplies and tweaking.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-04T19:36:35Z

AlonzoTG:

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== Schedule ==

Not yet determined.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits
* Phase splitting circuits
* Advanced circuits

* Hands-on experience building a battery-powered single tube filamentary pentode pre-amp.

* What is the real secret to great sound?

=== Laboratory Supplies ===

[http://www.bottlehead.com/store.php?crn=220&rn=438&action=show_detail cheap demo pre-amp]

Go to [tubedata.info] and obtain what you think is the most informative datasheet for the following tubes and print out a copy. -- you need a physical copy.

'''filamentary diode'''
5U4*
Optional: GZ34 / 5AR4

'''canonical triode'''
2A3
Optional: 845

'''to explore gain versus output'''
6SN7*
6SL7* or 12AX7 / ECC83

'''Pentodes'''
6BQ5 / EL84
Optional: KT88, EF86

3S4 <<< absolutely required, this is the tube we're using.

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.

Electron Tube Class

2011-07-04T03:33:32Z

AlonzoTG: Created page with "== About == Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for. == Schedule == Not yet determined..."

== About ==

Some people have made the mistake of expressing interest in electron tubes. They're about to learn more than they bargained for.

== Schedule ==

Not yet determined.

== Silly Bus ==

* Thermionic emission: From the lightbulb to the pentode.
* Fundamental circuits
* Phase splitting circuits
* Advanced circuits

* Hands-on experience building a tube circuit (TBD).

=== Laboratory Supplies ===

Not yet determined, looking for a very inexpensive design or kit that has a lot to teach. Send suggestions to [mailto:agrimes@speakeasy.net Alan Grimes]

=== Suggested Reading ===

Radiotron Designer's Handbook 4th ed. [www.pmillett.com] Might have one lying around.

Tube Circuits for Audio Amplifiers (1-882580-03-6) features some very elegant and practical designs.

An Approach To Audio Frequency Amplifier Design. (1-882580-05-2) Has some good discussions about output transformers and ultralinear design. Then it starts out with some nice practical amps but, before long at all, starts talking about 1,100 watt monsters with 2.5KV power supplies.

Building Valve Amplifiers (0-7506-5695-6) is probably too practical to be enjoyable but I have to deem it essential. His other book is fantastic, one of the most well worn tomes in my personal library, but get this one first.