Abstract: An amplifier circuit for a cable access television line amplifier has a circuit input and a circuit output and includes a first cascode amplifier having a first input and a first output, and a second cascode amplifier having a second input and a second output where the second cascode amplifier is coupled in a push-pull arrangement with the first cascode amplifier. The amplifier circuit further includes input circuitry for coupling the circuit input to the first and second inputs and output circuitry for coupling the first and second outputs to the circuit output. The first cascode amplifier includes a first field effect transistor coupled to the first input; the second cascode amplifier includes a second field effect transistor coupled to the second input; the first cascode amplifier further includes a third field effect transistor coupled to the first output; and the second cascode amplifier further includes a fourth field effect transistor coupled to the second output.

Abstract: A plug and socket form a simple and compact electrical connector for selectively distributing an electrical signal along different paths. The plug and socket are symmetrically arranged so that they are engageable with each other in different positions to achieve different electrical connections. The electrical connector saves printed circuit board space, minimizes parts, and improves switching flexibility in an RF signal amplification device for amplifying an RF (e.g., CATV) signal transmitted along an RF cable, and in a power coupler for coupling an AC power signal into an RF cable.