Electronic Circuits for Inventors is a book full of electronic circuits and building projects. This book introduces concepts for electronics. It is an application oriented book that covers components such as resistors, capacitors, inductors, transformers, transistors, diodes, operational amplifiers, TTL logic and the timer integrated circuits. Each project includes the theory and all of the information to build the electronic circuit. There is a section for building DC Power Supply Projects: Unregulated DC Power Supply, 7805 Fixed Regulated DC Power Supply 5V, 555 DC-DC Boost Converter 12V to 200V DC and Variable DC Power Supply using the LM317. The Oscillator Projects include using the 555 timer IC, crystal-based oscillator for a Precision Square Wave Generator and a voltage-controlled oscillator (VCO) - 74LS624 20 MHZ Oscillator. The practical use of TTL Logic Gate is demonstrated in the TTL Logic Test Station, Frequency Divider and Pulse Generation projects. Circuits for programming and using Non-Volatile Memories are demonstrated with the EEPROM Programmer and the EEPROM Arbitrary Waveform Generator projects. There are projects for IR (infrared) Communications circuits used for remote controls. There are projects demonstrating the use of MOSFET Power Transistors and Bipolar Transistors. The book has circuits with Op-Amps used for modifying analog signals. The practical use of Analog to Digital Converters (A/D) is demonstrated in the Oscilloscope 2 project which introduces the graphical observation of analog signals. Another much more sophisticated oscilloscope test equipment project (Oscilloscope 5) introduces the concept of system engineering where separate circuit boards are integrated together (Data Acquisition Board, LED Display Board and Interface Board) into a much more sophisticated electronic project. No PC computer or knowledge of microprocessor or micro-controller is required. Learn real world circuit implementations that can be used as part of other projects or new inventions. The book's electronic circuits are versatile where they can easily be adapted to your own applications. Joseph Berardi has over 24 years experience developing electronic products for leaders in the electronic industries.