The book, Analog Electronic Circuits explains the concepts of various electronic circuits that consist of inductors, diodes, resistors, capacitors and transistors. They are then connected through wires to ensure that electric current flows. Complex operations like computations, data transfer and amplification of signals can be then effectively performed. This book, with the aid, of examples, concise definitions, clear methodologies, graphics and maps shows readers how easy this subject is to comprehend. The book starts from the basics, by first showing the connection of electronic instrumentation and physics. It continues by explaining in detail what semiconductor mechanisms and circuits do. Readers learn how the contact of two semi conductors or bipolar junction transistors work. One needs to figure the mechanisms of field effect transistors that carry out the single operation of transmitting electrical charge, from the source to the sap.