Such services need not take place in a synagogue; they merely require a quorum ('minyan') of at least ten men over 13 years of age (in Orthodoxy-ten men or women in Progressive Judaism) to gather for morning, afternoon and evening prayers.uch services need not take place in a synagogue; they merely require a quorum ('minyan') of at least ten men over 13 years of age (in Orthodoxy-ten men or women in Progressive Judaism) to gather for morning, afternoon and evening prayers.
A repeater is an electronic device in a communication channel that increases the power of a signal and retransmits it, allowing it to travel further. Since it amplifies the signal, it requires a source of electric power.
A transformer is a device with two or more magnetically coupled windings (or sections of a single winding). A time varying current in one coil (called the primary winding) generates a magnetic field which induces a voltage in the other coil (called the secondary winding). Degaussing coil-a coil used to demagnetize parts. 2  Voice coil-a coil used in a moving-coil loudspeaker, suspended between the poles of a magnet. 3  When the audio signal is passed through the coil, it vibrates, moving the attached speaker cone to create sound waves.