Capacitor smoothing question


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Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 8894
Posted: 11:45am 10 Mar 2025      

No, you misunderstood. :)  I meant that using a simple resistor as a load is inaccurate for primary cells.

Rechargeable cells usually have a much shallower discharge curve, although some lead-acids can be a bit iffy as they age. With a shallow curve a resistor has much better accuracy as the start and end currents don't vary by all that much.