is_razi
Full Member level 3
hi everey body,
i have recently built a board for measuring the resistance by sending a current and reading the developed voltage on the resistor. i have use a 220v transformer with three output each for a 5v , 12v and -12v supplies. but there was a strange problem. when i change the phase and null input the readings of circuit differs .
please let me know if you had such a problem and if yes or if you have a comment please tell me what is the reason and how can i solve that.
best regards.
:?::?::?::?::?:
i have recently built a board for measuring the resistance by sending a current and reading the developed voltage on the resistor. i have use a 220v transformer with three output each for a 5v , 12v and -12v supplies. but there was a strange problem. when i change the phase and null input the readings of circuit differs .
please let me know if you had such a problem and if yes or if you have a comment please tell me what is the reason and how can i solve that.
best regards.
:?::?::?::?::?: