Automatic guitar tuner for electric guitars

摘要: An automatic guitar tuner for a standard six string electric which includes pick-up, master crystal oscillator, and tone generator each of the guitar. The pick-up feeds frequency comparator is fed by separate generator. A light emitting diode positioned under strings connected between source electricity, either battery or transformer. When individual match, will complete circuit through so that indicates properly tuned. out tune it adjusted in normal fashion until associated therewith energized.