Magnetic amplifier switch for automatic tuning of VLF transmitting antenna

Claim 2

A magnetic amplifier switching network, comprising: a power circuit having first and second power windings and means for controlling current flow so as to permit current flow only through one of said power windings at a time and only in one direction therethrough; a control circuit operably coupled to said power circuit having first and second control windings and means for controlling current flow so as to permit current flow only through one of said control windings at a time and only in a direction therethrough opposite to said direction of current flow through said power windings, said control circuit being capable of being turned either "on" or "off" so as to correspondingly either permit or prevent said current flow therein; first and second magnetic cores respectively inductively coupling said first power winding with said first control winding and said second power winding with said second control winding, said magnetic cores capable of being driven to saturation by current flow in said power windings when said control circuit is turned "off" and capable of being reset by current flow in said control windings when said control circuit is turned "on"; and a control device connected to said control circuit and being actuatable for selectively turning said control circuit either "on" or "off" to respectively place said magnetic amplifier switching network in either "open" or "closed" switch configurations.

Claim 3

The network of claim 1 wherein said current flow controlling means of said power circuit is a plurality of steering diodes.

Claim 4

The network of claim 1 wherein control device is also connected to said current flow controlling means of said power circuit for rendering said means non-conductive momentarily when said control circuit is turned "on" in order to interrupt current flow in said power circuit and permit resetting of said magnetic cores by current flow in said control circuit.

Claim 5

The network of claim 1 wherein said current flow controlling means of said control circuit is a plurality of steering diodes.

Claim 6

The network of claim 1 wherein said control device is a transistor.

Claim 7

In a radio frequency transmitting system including a transmitter operable to generate an A.C. signal at a frequency which is modulated to produce first and second frequencies at different times and an antenna connected to said transmitter, the combination comprising: (a) a magnetic amplifier switch for automatic tuning of said antenna to the one said first and second frequencies being transmitted at a given time, said magnetic switch including: (i) a power circuit having first and second power windings and means for controlling current flow so as to permit current flow only through one of said power windings at a time and only in one direction therethrough; (ii) a control circuit operably coupled to said power circuit having first and second control windings and means for controlling current flow so as to permit current flow only through one of said control windings at a time and only in a direction therethrough being opposite to the one direction of current flow through said power windings, said control circuit capable of being turned either "on" or "off" so as to respectively either permit or prevent said current flow therein; and (iii) first and second magnetic cores respectively inductively coupling said first power winding with said first control winding and said second power winding with said second control windings, said magnetic cores capable of being driven to saturation by current flow in said power windings when said control circuit is turned "off" and capable of being reset by said current flow in said control windings when said control circuit is turned "on"; (b) a first inductor connected between said transmitter and antenna and with said first and second power windings and said current flow controlling means of said power circuit for tuning said antenna to resonance, and to radiate an A.C. signal, at said first frequency when said control circuit is turned "on"; and (c) a second inductor connected between said transmitter and said antenna and with said first and second control windings and said current flow controlling means of said control circuit for producing resetting of said magnetic cores when said control circuit is turned "on" and for tuning said antenna to resonance, and to radiate an A.C. signal, at said second frequency when said control circuit is turned "off".

Claim 8

In a radio frequency transmitting system including a transmitter operable to generate an A.C. signal at a frequency which is modulated to produce first and second frequencies at different times and an antenna connected to said transmitter, the combination comprising: (a) a magnetic amplifier switch for automatic tuning of said antenna to the one said first and second frequencies being transmitted at a given time, said magnetic switch including: (i) a power circuit having first and second power windings and means for controlling current flow so as to permit current flow only through one of said power windings at a time and only in one direction therethrough; (ii) a control circuit operably coupled to said power circuit having first and second control windings and means for controlling current flow so as to permit current flow only through one of said control windings at a time and only in a direction therethrough being opposite to the one direction of current flow through said power windings, said control circuit capable of being turned either "on" or "off" so as to respectively either permit or prevent said current flow therein; and (iii) first and second magnetic cores respectively inductively coupling said first power winding with said first control winding and said second power winding with said second control windings, said magnetic cores capable of being driven to saturation by current flow in said power windings when said control circuit is turned "off" and capable of being reset by said current flow in said control windings when said control circuit is turned "on"; (b) a first inductor connected between said transmitter and antenna and with said first and second power windings and said current flow controlling means of said power circuit for tuning said antenna to resonance, and to radiate an A.C. signal, at said first frequency when said control circuit is turned "on"; and (c) a second inductor connected between said transmitter and said antenna and with said first and second control windings and said current flow controlling means of said control circuit for producing resetting of said magnetic cores when said control circuit is turned "on" and for tuning said antenna to resonance, and to radiate an A.C. signal, at said second frequency when said control circuit is turned "off".

Claim 9

The system of claim 6 wherein said current flow controlling means of said power circuit is a plurality of steering diodes.

Claim 10

The system of claim 6 wherein control device is also connected to said current flow controlling means of said power circuit for rendering said means non-conductive momentarily when said control circuit is turned "on" in order to interrupt current flow in said power circuit and permit resetting of said magnetic cores by current flow in said control circuit.

Claim 11

The system of claim 6 wherein said current flow controlling means of said control circuit is a plurality of steering diodes.

Claim 12

The system of claim 6 wherein said control device is a transistor.

Claim 13

The system of claim 6 further comprising means for generating signals for actuating said control device to turn said control circuit "on" or "off".

Claim 14

The system of claim 11 wherein said signal generating means is a modulator.