Source google image: https://thumbs.dreamstime.com/z/ensemble-de-symboles-sch%C3%A9ma-circuit-%C3%A9lectrique-et-%C3%A9lectronique-d-antennes-guides-ondes-tv-distribution-par-radio-107105688.jpg
Symbole schéma circuit électrique
Source google image: https://thumbs.dreamstime.com/z/ensemble-de-symboles-sch%C3%A9ma-circuit-%C3%A9lectrique-et-%C3%A9lectronique-d-antennes-guides-ondes-tv-distribution-par-radio-107105688.jpg