TIME MEASURING APPARATUS THRESHOLD VOLTAGE ADJUSTMENT ADAPTER

摘要

PROBLEM TO BE SOLVED: To provide a time measuring apparatus threshold voltage adjustment adapter for automatically making substantial threshold voltage for stopping a time measuring counter larger than threshold voltage set for a time measuring apparatus.SOLUTION: A switch control circuit 19 of a threshold voltage adjustment adapter 10 controls on/off of first to fourth threshold voltage switching switches 16to 16on the basis of a detection signal Sfrom a voltage sensor 18, makes substantial threshold value V' for stopping a time measuring counter 115 into a voltage value after adding to threshold voltage Vset for the time measuring apparatus 110 a total value of breakdown voltage of first to fourth Zener diodes 15to 15where the first to fourth threshold voltage switching switches 16to 16are turned off.