![This large belt-driven high-current dynamo from around 1917 produced 310 amperes at 7 volts DC. The huge complicated commutator (left) was needed to handle the large current. Dynamos are no longer used This large belt-driven high-current dynamo from around 1917 produced 310 amperes at 7 volts DC. The huge complicated commutator (left) was needed to handle the large current. Dynamos are no longer used](https://c8.alamy.com/comp/KH1RJ6/this-large-belt-driven-high-current-dynamo-from-around-1917-produced-KH1RJ6.jpg)
This large belt-driven high-current dynamo from around 1917 produced 310 amperes at 7 volts DC. The huge complicated commutator (left) was needed to handle the large current. Dynamos are no longer used
![974312 - Belt - Fan, Dynamo, Water Pump for Zetor 5340 Tractors | Up to 60% off Dealer Prices | TractorJoe.com 974312 - Belt - Fan, Dynamo, Water Pump for Zetor 5340 Tractors | Up to 60% off Dealer Prices | TractorJoe.com](https://www.tractorjoe.com/media/catalog/product/cache/1/small_image/300x/9df78eab33525d08d6e5fb8d27136e95/SPRX/974312-belt-fan-dynamo-water-pump.jpg)
974312 - Belt - Fan, Dynamo, Water Pump for Zetor 5340 Tractors | Up to 60% off Dealer Prices | TractorJoe.com
![Amazon.com: Replacement Belt for AC/DC Dynamo (eisco Labs Part PH1245N8) Approx 6" ID : Toys & Games Amazon.com: Replacement Belt for AC/DC Dynamo (eisco Labs Part PH1245N8) Approx 6" ID : Toys & Games](https://m.media-amazon.com/images/I/71rB+CxtUML._AC_UF1000,1000_QL80_.jpg)