Electronic load
Bench electronic load · constant current 1 A · 0–60 V · 0–10 A · 150 W
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: Bench electronic load
Pins
- +
- −
Ratings and limits
| Input | 0–60 V, 0–10 A |
|---|---|
| Power | 150 W |
| Modes | CC, CR, CP, capacity test |
How to use it
Tests supplies and batteries: constant-current discharge to a cut-off voltage reads the true capacity in mAh and Wh.
Lessons and builds that use it
- 65 W USB-C PD stage on a ready-made 24 V supply: buck converter, PD controller, load switch (build)
- 65 W USB-C PD charger from scratch: mains flyback (UC3844, 800 V MOSFET, PQ2625 transformer), TL431 + PC817 feedback, PD controller (build)
- Real device: phone charger, 220 V AC wall to 5 V USB (build)
- Real device: laptop charger, 220 V AC wall to 20 V with PFC (build)
- The IV curve: Voc, Isc and the knee
- Cold mornings raise Voc; hot noons cut power
- Shading and bypass diodes: a shadow costs more than its size
- Lead-acid against LiFePO4: usable capacity, voltage and life
- Economics: payback, and what a battery really costs per kWh