Tube Bias Calculator 1.9.5

1.78 MB

Publisher Description

The Tube Bias Calculator will calculate power tube bias values of Plate Current, Dissipation and % of Max Dissipation using either measured voltage drop across a cathode resistor or measured plate current. It has a database of 36 tube types and will calculate the Class A Fixed, Class AB Fixed Bias and Cathode Bias Maximum Safe Bias settings.
To calculate the tube's Max Safe Bias setting you simply pick your tube from the pick list and enter the Plate-to-Cathode Voltage (plate voltage is always measured between the tube's plate and cathode). The Maximum Safe Bias settings for Class A Fixed, Class AB Fixed Bias and Cathode Bias are displayed.
To calculate bias when you measure the plate current, such as when using the output transformer shunt current measurement, enter your Tube Type and Plate-to-Cathode voltage at the top of the page, enter the Plate Current and touch 'Calculate' and the Plate Dissipation and Dissipation% are shown.
To calculate bias by measuring the voltage drop across a cathode resistor enter your Tube Type and Plate-to-Cathode voltage at the top of the page, enter the Number of Tubes that share the cathode resistor, the Voltage Drop Across the Cathode Resistor and the Cathode Resistor actual resistance. Touch 'Calculate' and the Total Cathode Current, Total Plate Current, Plate Dissipation, Plate Dissipation % & Current per Tube are shown.
To measure the voltage drop across a resistor set your multimeter to volts DC and touch each leg of the resistor with a probe (disregard any minus sign).
WARNING: Amplifiers have high voltage that can KILL even when unplugged. Do not attempt to set an amplifier's bias unless you are competent with test gear and very familiar with high voltage and the dangers involved.

Tube Bias Calculator is a free software application from the Audio File Players subcategory, part of the Audio & Multimedia category. The app is currently available in English and it was last updated on 2016-09-21. The program can be installed on Android.

Tube Bias Calculator (version 1.9.5) has a file size of 1.78 MB and is available for download from our website. Just click the green Download button above to start. Until now the program was downloaded 31 times. We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.

Program Details


Publisher Rob Robinette
Released Date 2016-09-21
Languages English


Category Audio & Multimedia
Subcategory Audio File Players

System requirements

Operating systems android

Download information

File size 1.78 MB
Total downloads 31


License model Free
Price N/A

Version History

Here you can find the changelog of Tube Bias Calculator since it was posted on our website on 2016-10-03. The latest version is 1.9.5 and it was updated on on 2017-06-27. See below the changes in each version:

version 1.9.5

posted on 2016-09-21

V1.9.5 Added KT120 and KT150 tubes to tube database.,V1.9.3 Added 12AU7 to tube database.,V1.9.2 Minor editing.,V1.9.1 Removed redundant Plate-to-Cathode Voltage input.,V1.9 Minor editing.,V1.8 Changed 'Plate Voltage' to 'Plate-to-Cathode Voltage. Minor format changes.,V1.7 Corrected 'Bias Using Plate Current' calculation bug.,V1.6 Added 5 new tubes to the database.,V1.5 Minor changes.,V1.4 Minor format changes.,V1.3 Added more tubes to the database and more detail on the Help page.

Add a review

Tell us your experience with Tube Bias Calculator 1.9.5

Our Recommendations


Click stars to rate this APP!

Users Rating:  
  0.0/5     0
Editor Rating:  
Downloads last week: 0
Release Date: 2016-09-21
Publisher: Rob Robinette
Operating System: android
Type: Free