So, the way this works is: Let's say you have a 24 volt power supply and also need a low current 12 VDC supply, you would take the 24 volt supply connect the cathode of a zener to it and then you could use the anode side as your 12 VDC supply. It is only a simple solution for very low current applications (zener diodes are usually of fairly low wattage) and allows you to have 2 output voltages from a single source. |