Electronics

CC-65 is driven by a 9V battery.

Range select switch serves a power switch. When CC-65 is on, Power indicator becomes green. Unfortunatly, it dose not have auto shutdown function. So If you forget turn off it, battery becomes empty.

Push button is “zero adjustment knob”. The button dose not move smooth. I must push it down lightly to cary out the zero adjustment.

The manual of CC-65 says the precision of is 1.5%. I checked the DC current measurement result using constant current power supply. When 500 mA was applied to a coil, the measured value was 498 mA. This result is consistent with the manual.

Next I’d like to conduct a comparative experiment using an accurate ammeter and confirm the results against the AC waveform.

I bought a current probe that is Hantek CC-65 from aliexpress at the end of the last year.

I bought the probe about $50.

This probe can measure AC/DC current. The speck seat value of the bandwidth is up to 20kHz. This is little bit small for me, but this price is very attractive.

I’ll try it for some experiments and write the results here.