CREATE TABLE table_204_187 (id NUMBER, "type" CLOB, "power\ [w]" CLOB, "relative cost" NUMBER, "input range\ [v]" CLOB, "energy storage" CLOB, "features" CLOB)

the half bridge 's energy storage is not a transformer but what ?
SELECT "energy storage" FROM table_204_187 WHERE "type" = 'half-bridge'
SELECT "energy storage" FROM "table_204_187" WHERE "type" = 'half-bridge'