New Solution to Wars of the Currents

Let's review the Wars of the Currents happened more than 100 years ago. With today's technology, is there a better choice?

[@吕豪豪]

很好！

[@stephensu4371]

直流電還有一個問題，交流電的變壓器可以簡單解決的，就是雙向供電，最後直流電還是要變換成交流電通過變壓器才能雙向換流