List of electrophones by Hornbostel–Sachs number

The Hornbostel–Sachs system of musical instrument classification groups all instruments which make sound primarily by way of electrically driven oscillators. Though Sachs divided the category of electrophones into three distinct subcategories, specifying these three as: 51 - Electrically actuated acoustic instruments 52 - Electrically amplified acoustic instruments 53 - Instruments which primarily produce sound with electrically driven oscillators In the present day only instruments belonging to this last subcategory are considered "electronic musical instruments".

Source: Wikipedia — List of electrophones by Hornbostel–Sachs number (CC BY-SA 4.0)