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dcb · 03-09-2010, 07:34 PM

yes, a clamp on hall is simple, just a pain shopping for the "right" one to figure out the additional costs/sensitivity, as compared to the simplicity of x number of turns of small gauge y wire around diameter z mains wire. I don't think an opamp is even a requirement. Figure you can sample 4 readings (2 leg currents and 2 leg voltages) at 5khz with a atmega168 anyway, with or without a hall.

03-09-2010, 07:34 PM	#16 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	yes, a clamp on hall is simple, just a pain shopping for the "right" one to figure out the additional costs/sensitivity, as compared to the simplicity of x number of turns of small gauge y wire around diameter z mains wire. I don't think an opamp is even a requirement. Figure you can sample 4 readings (2 leg currents and 2 leg voltages) at 5khz with a atmega168 anyway, with or without a hall. __________________ WINDMILLS DO NOT WORK THAT WAY!!! Last edited by dcb; 03-09-2010 at 07:43 PM..