CREATE TABLE table_204_583 (id NUMBER, "capacitor type" CLOB, "capacity" CLOB, "volts" CLOB, "temp." CLOB, "energy-to-weight ratio" CLOB, "power-to-weight ratio" CLOB)

which capacitor has the top voltage rating ?
SELECT "capacitor type" FROM table_204_583 ORDER BY "volts" DESC LIMIT 1
SELECT "capacitor type" FROM "table_204_583" ORDER BY "volts" DESC FETCH FIRST 1 ROWS ONLY