A source of alternating current, especially a now obsolete radio transmitter, that derives its output from the oscillating discharge of a capacitor to an inductor and across a spark gap. Also called spark generator火花式发射机：一种交流电源，尤指老式无线电发射机，通过电容和电感的振荡放电并越过火花隙而得以输出 也作 spark generator