emission(1) - do calculations on measurements from the author's valve tester

Kozmix Go, 17-FEB-2023

emission <valve type> ht=... curr=... [nb=...]

Description

emission processes the test results from the author's valve tester. The command line arguments are:

• designation
  The valve type (EL84, ECC83, etc; case-insensitive).
• ht=...
  HT (anode) voltage as measured from the red socket, in volts. This will be around 150V for preamp valves and around 300V for power valves.
• curr=...
  Cathode current as measured from the green socket (where 1mV measured equals 1mA of current).
• nb=...
  Negative bias voltage as measured from the blue socket and set with the knob to the left of it (optional).

emission will then calculate power dissipation (both at 100% for cathode biased valves and at 70% for fixed biased valve), and emit warnings if any measured values exceed maximum values (or in case of negative bias, are more than 50% off the recommended testing value).

Examples

.EX $ emission el84 curr=48m ht=297 nb=14 valve: EL84

value measured nominal/max. anode voltage V = 297 V 300 V negative bias V = -14 V -13.5 V cathode current I = 48 mA 65 mA dissipation cathode bias P = 14.25 W 12 W WARNING dissipation fixed bias P = 14.25 W 8.4 W WARNING

.EE

See Also

valve(1)

Bugs

emission only has data on a small range of valve types built in, and only knows them by their European designations.

Author

svm