I have two encoders and need to switch from using one to the other with a fast electronic switch. Unfortunatley, my knowledge of component level electronics is very limited. Can someone give me some advice on building this circuit, or a site with a circuit drawing I can copy. This is something I need right away so furthering my education is not practical at this time. I was thinking of using trasistors or zener diodes, but I may be way off. Help please.