Click to Enlarge Image Figure 1: Microcontroller U2 controls a low-power dc motor using the quad-SPST analog switch U1. Microcontroller U2, by controlling the four digital switch-control inputs of U1 ...

Recently, I found an interesting fan motor module in a web shop and grabbed a couple of them for nothing. At the heart of the module is an eight-pin L9110 DC motor control chip from ASIC (www.asic.net ...