Television preamplifier power source

Claim 2

A power supply comprising a source of direct current, first and second D.C. output terminals, a first regular transistor coupled across said source, said first transistor having one side coupled to both said first output terminal and one side of said source whereby said first transistor acts as a shunt regulator, a second current foldback transistor coupling said second output terminal to the other side of said source, and means coupling said transistors together whereby the impedance of said second transistor is controlled by said first transistor.

Claim 3

A power supply according to claim 1 wherein said source of direct current comprises an AC to DC converter.

Claim 4

A power supply according to claim 1 wherein said source of direct current comprises a transformer and rectifier.

Claim 5

A power supply according to claim 1 including an RF block coupling said one side of said first transistor to said first output terminal.

Claim 6

A power supply according to claim 4 wherein said RF block comprises a choke coil.

Claim 7

A power supply according to claim 5 wherein said RF block further comprises at least one capacitor coupled between said one side of said first transistor and said second output terminal.

Claim 8

A power supply according to claim 1 including third and fourth terminals, and means coupled to said terminals for steering an RF signal from said first and second terminals to said third and fourth terminals.

Claim 9

A power supply according to claim 7 including a remote amplifier coupled to said first and second terminals and a receiver coupled to said third and fourth terminals.

Claim 10

A power supply according to claim 8 including a remote T.V. antenna, said amplifier being mounted adjacent said antenna, said receiver comprising a T.V. receiver.

Claim 11

A power supply according to claim 9 wherein said amplifier comprises a broadband VHF T.V. preamplifier and is coupled to said first and second output terminals by a coaxial cable.

Claim 12

A power supply comprising a first transistor having an emitter, a collector and a base, an electrical power source having one side coupled to the emitter of said first transistor and the other side coupled to the collector of said first transistor, means coupling the base of said first transistor to said power source, a first output terminal coupled to one of said emitter and collector of said first transistor, a second transistor having an emitter, a collector and a base, means coupling the other of said emitter and Collector of said first transistor to the base of said second transistor, and a second output terminal, the emitter-collector circuit of said second transistor coupling said second output terminal to the other side of said power source.

Claim 13

A power supply comprising a first transistor having an emitter, a collector and a base, an electrical power source having one side coupled to the emitter of said first transistor and the other side coupled to the collector of said first transistor, means coupling the base of said first transistor to said power source, a first output terminal coupled to one of said emitter and collector of said first transistor, a second transistor having an emitter, a collector and a base, means coupling the other of said emitter and Collector of said first transistor to the base of said second transistor, and a second output terminal, the emitter-collector circuit of said second transistor coupling said second output terminal to the other side of said power source.

Claim 14

A power supply according to claim 11 herein said first output terminal is coupled to the emitter of said first transistor.

Claim 15

A power supply according to claim 11 wherein said second output terminal is grounded.

Claim 16

A power supply according to claim 11 wherein said power source comprises a transformer having a secondary winding, said emitter-collector circuit of said second transistor coupling said second output terminal to said secondary winding.

Claim 17

A power supply according to claim 14 including a rectifier diode coupling one end of said secondary winding to said one of said emitter and collector of said first transistor, said emitter-collector circuit of said second transistor coupling said second output terminal to a point on said secondary winding remote from said one end of said winding.

Claim 18

A power supply according to claim 15 wherein said emitter-collector circuit of said second transistor is coupled to a center tap on said winding, and a second rectifier diode coupling the other end of said winding to said one of said emitter and collector of said first transistor.

Claim 19

A power supply according to claim 11 including a first coaxial cable connector forming said first and second output terminals, an RF block coupling said first connector to said transistors, a second coaxial cable connector, and a DC block coupling said connectors to each other.