Abstract: An automatic power supply apparatus which comprises at least a cassette deck box and an audio box, said cassette deck box including an automatic power supply circuit, a control amplifier, a switch means for selectively connecting a power supply to a tape player or a radio, etc., said audio box including a relay for connecting and disconnecting the power supply, an audio amplifier connected to the relay, etc. When the switch is set to the tape recorder side, the power supply is connected to the control amplifier and the relay, and when the switch is set to the radio side, the automatic power supply circuit is energized so as to connect the power supply to the control amplifier and the relay.

Abstract: A tape recorder in which the middle part of a locking lever which engages and disengages with the engaging part of a slide piece provided on the recorder frame and the end of a suspending piece are loosely pivoted to the moving frame of which one end is pivotally attached to the deck of the recorder frame, a projection which engages with one end of said suspending piece as well as with the engaging portion formed on the moving frame is provided at the end of said locking lever, a toggle spring is hooked between said suspending piece and moving frame thereby forming a guide portion, and wherein a cassette is inserted with its reproduce side or longer side inward requiring only a short stroke to automatically assume a reproducing or recording condition, and allowing easy removal of the cassette.