| Products > Test Equipment |
| Atorch DLB-600W DC load |
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| Odd:
Hi, I purchased a DLB-600W from Atorch on Aliexpress. The load can be connected using kelvin probes. I heard a loose part inside - it was a 1cm wide 6-turn coil on 0.9mm wire. it's resistance is 50mOhm Atorch support told me it was mounted internally between I- and V- inputs as a "reverse polarity protection" Having it there clearly destroys half of the precision gained by having sensing leads. 1. Does anyone know exactly what it is supposed to protect? - I can only assume it is against connecting V- to V+ or so. 2. if you have one, and do not remove it : do know that the precision is compromised. - the factory calibration of the device is otherwise very good. |
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