The joy of learning and hands-on building of electronics has been a life long adventure. It's still a thrill to play in the sandbox with an idea, then actually build it and see it in action! My other passion is sharing any insights that could help others on their journey. I've been creating analog topics and hands-on SPICE/Excel files at ecircuitcenter to assist others in building knowledge and intuition. Let me know what you find useful, or other comments / ideas. Thanks! - Rick