Abstract: A rotating electric machine includes a rotor, a stator, a housing, a plurality of control modules and a joining member. The stator includes a stator coil. The housing accommodates both the rotor and the stator therein. The control modules are capable of supplying multi-phase alternating current to the stator coil and rectifying multi-phase alternating current generated in the stator coil into direct current. The control modules include a first control module and a second control module that are arranged adjacent to each other. The first and second control modules are joined, by the joining member, to be in surface contact with each other.

Abstract: A rotating electric machine includes a rotor, a stator, a housing, a plurality of control modules and a joining member. The stator includes a stator coil. The housing accommodates both the rotor and the stator therein. The control modules are capable of supplying multi-phase alternating current to the stator coil and rectifying multi-phase alternating current generated in the stator coil into direct current. The control modules include a first control module and a second control module that are arranged adjacent to each other. The first and second control modules are joined, by the joining member, to be in surface contact with each other.

Abstract: A tone signal is formed by repeatedly reading out digital data stored in a memory device. Thus a predetermined tone wavefrom signal is stored in the memory device as data corresponding to the amplitude value at a plurality of sampling points and the data are repeatedly read out at a predetermined speed. A quasi sine wave signal is formed based on the read out signal. Harmonic components are eliminated from the quasi sine wave signal with a lowpass filter, thereby forming a desired tone signal.

Abstract: A radio interference detection device for use in a multi-channel access angle-modulation radio system. A detecting system detects a received signal prior to angle demodulation and produces an AM component of the received signal which is then rectified. A determining section then determines the level of the rectified signal for use in detecting interference in accordance with a determination result. The determining section includes an angle demodulator for angle-demodulating the received signal, a first comparator for comparing the angle-demodulated signal and the rectified signal, a second comparator for producing the detection signal when the rectified signal exceeds a predetermined level and a gate for passing the output signal from the second comparator only when the angle-demodulated signal is smaller than the rectified signal.