- Self‑powered active load — no external supply needed.
- Operates from as low as 2 V.
- Supports constant resistance mode.
- Supports constant current mode.
- 10‑turn potentiometer and range switch for precise control.
- Fully analog design with very low noise contribution.
- Can be controlled by external voltage input.
- Suitable for power supply testing, LED testing, and field use.
- Rugged and practical for workshop or lab environments.
TBOH02
Self Powered Active Load
The TBOH02 is a precision self‑powered active load that does not require a separate power supply and can operate from as low as 2 V. It features both constant resistance and constant current modes, adjustable via a 10‑turn potentiometer with a dial, a range switch, and a precision reference for accurate load setting. The design is fully analog, meaning it introduces minimal additional noise, making it ideal for supply noise measurements and other low‑noise applications. This active load can be used for power supply testing, as a current sink or source, and is also useful in field testing where external power may not be available.
Features
Key capabilities and advantages
Specification
Technical specifications and parameters
| Operating voltage range | 2 V – 70 V |
| Maximum current | 10 A |
| Power rating | 25 W continuous without additional cooling |
| Enhanced power rating | 100 W continuous with optional fan accessory |
| Load ranges | 0 A – 1 A, 0 A – 10 A, 1 Ω – 10 Ω, 10 Ω – 100 Ω |
| External control input | voltage control input for setting load externally |
| Minimum self‑power current consumption | typical ~2.4 mA |
| Reference drift | approximately 0.002 %/°C |
| Operating temperature range | typically 0 °C to 50 °C |
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