Electronics Burn-in Acceleration and eTCL Slot Calculator Demo Example

Electronics Burn-in Acceleration Factor and eTCL Slot Calculator Demo Example

This page is under development. Comments are welcome, but please load any comments in the comments section at the bottom of the page. Please include your wiki MONIKER and date in your comment with the same courtesy that I will give you. Aside from your courtesy, your wiki MONIKER and date as a signature and minimal good faith of any internet post are the rules of this TCL-WIKI. Its very hard to reply reasonably without some background of the correspondent on his WIKI bio page. Thanks, gold 12DEC2018



Introduction

gold Here is some TCL calculations for the burn-in acceleration factor in electronics testing. Most of the testcases involve replicas or models, using assumptions and rules of thumb.

Pseudocode and Equations

  price? = raw materials + labor  +  profit
  price? = raw materials + heat process
  price? = raw materials + labor 
  average price per unit  = revenue  / units sold

Testcases Section

In planning any software, it is advisable to gather a number of testcases to check the results of the program. The math for the testcases can be checked by pasting statements in the TCL console. Aside from the TCL calculator display, when one presses the report button on the calculator, one will have console show access to the capacity functions (subroutines).

Testcase 1

table 1printed in tcl format
quantity value comment, if any
testcase number:1
150.0 :test hours
60.0 :normal operating temperature centigrade
150.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
150.0 :test at higher temperature hours
2929.05289702299 :effective hours

Testcase 2

table 2printed in tcl format
quantity value comment, if any
testcase number:2
300.0 :test hours
55.0 :normal operating temperature centigrade
160.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
300. :test at higher temperature hours
9343. :effective hours

Testcase 3

table 3printed in tcl format
quantity value comment, if any
testcase number:3
300.0 :test hours
55.0 :normal operating temperature centigrade
160.0 :higher test temperature centigrade
0.4 :electron volt (silicon=.4)
30.0 :answers: temperature acceleration factor
30.0 :temperature acceleration factor
300.0 :test at higher temperature hours
9343.54850428406 :effective hours

Screenshots Section

figure 1.


References:

  • Stat

Appendix Code

appendix TCL programs and scripts

        # pretty print from autoindent and ased editor
        # burn in acceleration calculator
        # written on Windows XP on eTCL
        # working under TCL version 8.5.6 and eTCL 1.0.1
        # gold on TCL Club, 15oct2014
        # comment follows from gold, dated 12Dec2018
        # pretty print from autoindent and ased editor
        # burn in acceleration calculator V2
        # written on Windows XP on TCL
        # working under TCL version 8.6
        # Revamping older program from 15Jan2014.
        # One of my early TCL programs on wiki,
        # but I believe the burn_in equations
        # might have some interest (to me).
        package require Tk
        namespace path {::tcl::mathop ::tcl::mathfunc}
        frame .frame -relief flat -bg aquamarine4
        pack .frame -side top -fill y -anchor center
        set names {{} {test hours:} }
        lappend names {normal operating temperature centigrade :}
        lappend names {higher test temperature centigrade: }
        lappend names {semiconductor activation energy, electron volt (default silicon=0.4) :}
        lappend names {answers: temperature acceleration factor :}
        lappend names {temperature acceleration factor: }
        lappend names {test at higher temperature hours : }
        lappend names {effective hours :}
        foreach i {1 2 3 4 5 6 7 8} {
            label .frame.label$i -text [lindex $names $i] -anchor e
            entry .frame.entry$i -width 35 -textvariable side$i
            grid .frame.label$i .frame.entry$i -sticky ew -pady 2 -padx 1 }
        proc about {} {
            set msg "Calculator for Burn In Acceleration calculator
            from TCL WIKI,
            gold on TCL Club, 12Dec2018 "
            tk_messageBox -title "About" -message $msg }
        proc self_help {} {
            set msg " Burn-in Acceleration Factor V2
            from TCL ,
            # self help listing
            # problem, Burn-in Acceleration Factor V2
            # 4 givens follow.
            1) test hours:
            2) normal operating temperature centigrade:
            3) higher test temperature centigrade:
            4) activation energy, electron volts (silicon=.4):
            # semiconductor activation energy, .1<ev<5 norm.
            # activation entries outside boundaries .1<ev<5.
            # are defaulted to (silicon=0.4).
            # Recommended procedure is push testcase
            # and fill frame,
            # change first three entries etc, push solve,
            # and then push report.
            # Report allows copy and paste
            # from console to conventional texteditor.
            # For testcases, testcase number is internal
            # to the calculator and will not be printed
            # until the report button is pushed
            # for the current result numbers.
            # >>> copyright notice <<<
            # This posting, screenshots, and TCL source code is
            # copyrighted under the TCL/TK license terms.
            # Editorial rights and disclaimers
            # retained under the TCL/TK license terms
            # and will be defended as necessary in court.
            Conventional text editor formulas
            or  formulas grabbed from internet
            screens can be pasted into green console.
            # gold on  TCL Club, 12Dec2018 "
            tk_messageBox -title "Self_Help" -message $msg }
        proc calculate {     } {
            global side1 side2 side3 side4 side5
            global side6 side7 side8
            global testcase_number
            global activation_default
            incr testcase_number
            set side1 [* $side1 1. ]
            set side2 [* $side2 1. ]
            set side3 [* $side3 1. ]
            set side4 [* $side4 1. ]
            set side5 [* $side5 1. ]
            set side6 [* $side6 1. ]
            set side7 [* $side7 1. ]
            set side8 [* $side8 1. ]
            set activation_default 0
            set test_time $side1
            set tempkelvin1 [+ $side2 273. ]
            set tempkelvin2 [+ $side3 273. ]
            set electron_volt $side4
            if {  $electron_volt < .1 ||  $electron_volt > 4. } { set activation_default 1 }
            if {  $electron_volt < .1 ||  $electron_volt > 4. } { set electron_volt 0.4 }
            set boltzman_constant 0.000086
            set term2 [- [/ 1. $tempkelvin1 ] [/ 1. $tempkelvin2 ] ]
            set term3 [* $electron_volt $term2 ]
            set term4 [/ $term3 $boltzman_constant ]
            set acceleration_factor [exp $term4 ]
            set $side5 $acceleration_factor
            set $side6 $acceleration_factor
            set side7 $test_time
            set effective_burn [* $test_time $acceleration_factor 1. ]
            set side8 $effective_burn
        }
        proc fillup {aa bb cc dd ee ff gg hh} {
            .frame.entry1 insert 0 "$aa"
            .frame.entry2 insert 0 "$bb"
            .frame.entry3 insert 0 "$cc"
            .frame.entry4 insert 0 "$dd"
            .frame.entry5 insert 0 "$ee"
            .frame.entry6 insert 0 "$ff"
            .frame.entry7 insert 0 "$gg"
            .frame.entry8 insert 0 "$hh"
        }
        proc clearx {} {
            foreach i {1 2 3 4 5 6 7 8 } {
                .frame.entry$i delete 0 end } }
        proc reportx {} {
            global side1 side2 side3 side4 side5
            global side6 side7 side8
            global testcase_number
            global activation_default
            console eval {.console config -bg palegreen}
            console eval {.console config -font {fixed 20 bold}}
            console eval {wm geometry . 40x20}
            console eval {wm title . " Burn-in Acceleration Factor, screen grab and paste from console 2 to texteditor"}
            console eval {. configure -background orange -highlightcolor brown -relief raised -border 30}
            console show;
            puts "%|table $testcase_number|printed in| tcl  format|% "
            puts "&| quantity| value| comment, if any|& "
            puts "&| testcase number:|$testcase_number | |&"
            puts "&| $side1 :|test hours|   |&"
            puts "&| $side2 :|normal operating temperature centigrade | |& "
            puts "&| $side3 :|higher test temperature centigrade | |& "
            puts "&| $side4 :|semiconductor activation energy, electron volt (default silicon=0.4) |  |&"
            puts "&| $side5 :|answers: temperature acceleration factor |  |&"
            puts "&| $activation_default :| activation_default logic active,  0 off or 1 defaulted | check semiconductor activation energy on logic 1  |&"
            puts "&| $side6 :|temperature acceleration factor| |& "
            puts "&| $side7 :|test at higher temperature hours|  |&"
            puts "&| $side8 :|effective hours |  |&"
        }
        frame .buttons -bg aquamarine4
        ::ttk::button .calculator -text "Solve" -command { calculate   }
        ::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 150.0 60.0 150.0 0.4  30.0 30.0 150. 2929.}
        ::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 200.0 60.0 180.0 0.4  30.0 30.0 200. 8089.}
        ::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 300.0 55.0 160.0 0.4  30.0 30.0 300. 9343.}
        ::ttk::button .clearallx -text clear -command {clearx }
        ::ttk::button .about -text about -command about
        ::ttk::button .self_help -text self_help -command { self_help }
        ::ttk::button .cons -text report -command { reportx }
        ::ttk::button .exit -text exit -command {exit}
        pack .calculator  -in .buttons -side top -padx 10 -pady 5
        pack  .clearallx .cons .self_help  .about .exit .test4 .test3 .test2   -side bottom -in .buttons
        grid .frame .buttons -sticky ns -pady {0 10}
        . configure -background aquamarine4 -highlightcolor brown -relief raised -border 30
        wm title . "Burn-in Acceleration Factor Calculator "

Pushbutton Operation

For the push buttons, the recommended procedure is push testcase and fill frame, change first three entries etc, push solve, and then push report. Report allows copy and paste from console.

For testcases in a computer session, the eTCL calculator increments a new testcase number internally, eg. TC(1), TC(2) , TC(3) , TC(N). The testcase number is internal to the calculator and will not be printed until the report button is pushed for the current result numbers. The current result numbers will be cleared on the next solve button. The command { calculate; reportx } or { calculate ; reportx; clearx } can be added or changed to report automatically. Another wrinkle would be to print out the current text, delimiters, and numbers in a TCL wiki style table as

  puts " %| testcase $testcase_number | value| units |comment |%"
  puts " &| volume| $volume| cubic meters |based on length $side1 and width $side2   |&"  

gold 12Dec2018. This page is copyrighted under the TCL/TK license terms, this license .

Comments Section

Please place any comments here with your wiki MONIKER and date, Thanks.gold12Dec2018