Power supply without interference signals - our battery box

How a clever design simplifies EMC measurements

Anyone who has ever performed an EMC measurement knows that every source of interference counts. And the power supply in particular can be a challenge when sensitive measurements are influenced by electronic components. This is exactly where our new battery box comes in – a mobile battery system integrated into a robust and compact pilot case. It was developed specifically for use in EMC laboratories.

Power supply without electronics – is that possible?

Yes, and surprisingly well. The battery box deliberately dispenses with any electronics in order to keep interference emissions during measurement as low as possible. Instead, the optional shutdown of the DUTs and charging connections is carried out via compressed air control and an integrated load relay. All connections on the box have been positioned as close as possible to the ground plate to avoid interference here too.

A powerful 105Ah battery in the box ensures a stable supply to the DUT and measurement technology – even when high power is required over long periods of time. For continuous operation, the battery can also be charged via an additional external power supply.

Several individually fused connections with different current carrying capacities (up to 200A) enable a wide range of applications. And thanks to its compact design, the measuring table remains tidy.

3D printing meets high-current technology

The challenge during development was clear: how to fit large cable cross-sections of up to 70 mm² into a compact housing – while still providing centrally accessible fuse holders?

Our designers solved this task with a combination of clever design and state-of-the-art 3D printing technology. The battery holder, the distribution plate with integrated fuses, and customized copper rails were manufactured to fit perfectly, enabling a space-saving, robust implementation.

Compressed air instead of electronics

An optional compressed air control system provides additional safety and flexibility. This allows DUT and load connections to be switched via an integrated load relay – without any electronic sources of interference.

Conclusion: Compact, powerful, and interference-free

The new battery box shows how thoughtful design and innovative manufacturing technologies can come together to solve a real problem in everyday EMC laboratory work. If you are looking for a reliable, low-interference power supply, you should take a look at our new system.