Radio toy

Claim 1

A radio toy having a hollow base, a toy body fixed on the top surface of the hollow base, a head portion including a mouth having an upper jaw and a relatively movable lower jaw disposed on the top of the toy body, and a radio set with a speaker in the bottom base adapted to be energized by a power source in the hollow base, comprising: an electrically actuatable magnetic means disposed in the head portion of the toy for effecting the opening and closing of the mouth of the head portion; and in audio-frequency control means electrically coupled with the radio set and with said magnetic means for turning on and off said magnetic means in conjunction with the amplitude of the audio frequency produced by the radio set, said audio-frequency control means comprising an audio-frequency voltage amplifying circuit connected to the output of the audio-frequency amplifier of the radio set for rectifying and amplifying the audio signal thereof; a d.c. amplifying circuit connected to the output of said audio-frequency voltage-amplifying circuit for amplifying the rectified d.c. audio signal thereof; and an on-and-off transistor circuit connected between the output of said d.c. amplifying circuit and said magnetic means.