A teardown of the Uni-T UTE 310 Digital Power Meter, and an example meausing the power consumption of the new Brymen BM786BT multimeter in bluetooth data transmission mode.

Forum:

00:00 – Uni-T UTE310 Power Meter
02:44 – Teardown
06:54 – Power supply
07:47 – FPGA and ARM processors (plural)
09:23- Seperate isolated volatge and current measurements
11:28 – Special Snowflake shunt resistor
14:04 – Turn on and a looks at the current ranges
15:04 – Flashing LEDs
15:51 – Shunt resistor heatsink sizing
16:46 – Inside the metal cans. ADC’s + Amplifiers. Talking head Dave, PCB walkthrough
27:05 – Power on, offset error, and the tyranny of ranging
30:19 – Demonstration with BM786BT multimeter battery consumption
34:51 – Current waveform view
39:11 – The offset has drifted
40:43 – Conclusion

Podcast: Download