TAPE RECORDER

摘要

PURPOSE:To miniaturize a tape recorder itself and to attain the stereophonic sound recording with the output kept as it is for a radio receiving circuit, by using a pair of built-in microphones. CONSTITUTION:The radio signals of right and left channels impressed to terminals a1 and a2 are impressed to sound record amplifiers 3 and 4 via radio/tape changeover switches S1-1 and S1-2 as well as to output amplifier 7 and 8 via switches S1-3 and S1-2 respectively. The radio signals amplified by amplifiers 3 and 4 are impressed to magnetic heads 9 and 10 via sound recording/reproducing changeover switches S2-3 and S2-4 and reproduction amplifiers 5 and 6 for stereophonic sound recording. The output of a built-in microphone 1 is impressed to the amplifiers 3 and 4 via a switch SW1 and switches S1-1 and S1-2 and receives the monaural sound recording by magnetic heads 9 and 10 respectively.