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 transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.It is composed of semiconductor material with at least three terminals for connection to an external circuit.ollector current is approximately Î² (common-emitter current gain) times the base current. It is typically greater than 100 for small-signal transistors but can be smaller in transistors designed for high-power applications. Unlike the field-effect transistor (see below), the BJT is a lowâinput-impedance device.