vacuum tube audio and do-it-yourself projects
audio projects
power amplifiers
10 watt 6L6GC class a pentodes low distortion, traditional feedback circuit.
6V6GT push-pull triode-strapped Sweet and Low Down on the power scale.
The Vivi-Voice an all transformer-coupled 3W triode amp.
preamplifiers
12AZ7 buffered volume control for those who don't need a preamp with gain.
"Odilon" a line-level 6DJ8 preamplifier using transformers.
power amplifiers
10 watt 6L6GC class a pentodes low distortion, traditional feedback circuit.
6V6GT push-pull triode-strapped Sweet and Low Down on the power scale.
The Vivi-Voice an all transformer-coupled 3W triode amp.
preamplifiers
12AZ7 buffered volume control for those who don't need a preamp with gain.
"Odilon" a line-level 6DJ8 preamplifier using transformers.
spice tube models
Vacuum tube model library for use in any simulator that consumes Berkeley 3F4, LTSpice, or PSpice
syntax. 6SN7, 12AX7, 12AT7, 12AU7, ECC88, 6C45Pi and 6C4Pi.
Vacuum tube model library for use in any simulator that consumes Berkeley 3F4, LTSpice, or PSpice
syntax. 6SN7, 12AX7, 12AT7, 12AU7, ECC88, 6C45Pi and 6C4Pi.
TubeFormulas.xls a simple Excel spreadsheet I put together with some useful tube-related
formulas such as Miller capacitance, operating point, etc. Each tab contains related formulas.
Right-click, and then "save target as".
formulas such as Miller capacitance, operating point, etc. Each tab contains related formulas.
Right-click, and then "save target as".
schematic symbols a zip file containing many common schematic symbols I drew, in GIF
format, for use in any image editor like MS Paint. Have fun drawing your own schematics.
Right-click, and then "save target as".
or... try this set drawn in the style of the old Tektronix company schematics from the 50's and 60's.
format, for use in any image editor like MS Paint. Have fun drawing your own schematics.
Right-click, and then "save target as".
or... try this set drawn in the style of the old Tektronix company schematics from the 50's and 60's.
loadlines several resistive loads are plotted, and the most linear operating points are given for several B+ voltages. 6FH5, 6ER5, 6GK5,
6J4/8532, 5755, 5965.
6J4/8532, 5755, 5965.
articles
"The Design of a High Fidelity Amplifier", F. Langford-Smith. The A515 americanization of the original 1947 Williamson circuit. A much more
detailed version of the article that appears in the Radiotron Designer's Handbook, 4th Ed.
1959 Sylvania Tube Manual, Appendix full of good tube information and the resistance coupled amplifier charts.
"The Design of a High Fidelity Amplifier", F. Langford-Smith. The A515 americanization of the original 1947 Williamson circuit. A much more
detailed version of the article that appears in the Radiotron Designer's Handbook, 4th Ed.
1959 Sylvania Tube Manual, Appendix full of good tube information and the resistance coupled amplifier charts.
schematics
Simpson 303 a classic vacuum tube volt meter.
Simpson 303 a classic vacuum tube volt meter.
email write to joel@joeltunnah.com, I welcome any and all comments and corrections.
| ©2009 |
Joel Tunnah's