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Nice tuning! I guess that passengers unfortunately notice that this trolleybus is almost the same as the old ones?
There are new face, old vehicle and almost the same salon. As usual, passengers don't know about electric equipment.
Chopper is an electric device used to decrease the voltage. It is based on semoconductors - thyristors or transistors. So, I'm asking if this trolleybus has got thyristor or transistor control
Thank you I hope my question don't make you feel confused while trying to understand