A free guide for engineers looking to build galvanic isolation and noise protection into designs using photocoupler-based technology is available from Toshiba Electronics Europe. The 80-page Photocouplers and Photorelays Product Guide includes technical data for each product and a ‘product tree' that allows engineers to narrow down their choice to a few key components. A new product section introduces the additions to the range. There is also information on topics from packaging to board assembly considerations to simplify design and implementation.