Jimmy Ray Rogers

US Patent:

40286339, Jun 7, 1977

Filed:

Jul 19, 1976

Appl. No.:

5/706410

Inventors:

Jimmy Dale Rogers - Dallas TX
Michael Earl Creecy - Richardson TX

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H03F 328

US Classification:

330118

Abstract:

A drive circuit responsive to the phase of the amplifier output current eres that the non-conducting amplifier element remains off while the other amplifier element conducts. The output current phase can be detected either from the individual amplifier element outputs or from their combined outputs. Adjustments are made to compensate for any phase shift which occurs between the input to the amplifier and the point in the output at which the phase is detected.

US Patent:

40471209, Sep 6, 1977

Filed:

Jul 15, 1976

Appl. No.:

5/705489

Inventors:

Harold Wilbur Lord - Mill Valley CA
Jimmy Dale Rogers - Dallas TX

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H03F 2100

US Classification:

330207P

Abstract:

A protective coupling circuit is located between the D. C. supply voltage the amplifier components of a push-pull switching amplifier to suppress transients created during switching. The coupling circuit comprises a power supply filter with an inductor coil and capacitor, and circuitry for limiting the voltage on the individual switching elements and the output coil. Excess voltages caused by transients are fed to the power supply filter. In an alternative embodiment the power supply filter inductor coil is actually an auxiliary winding on the amplifier output transformer rather than a separate coil. This allows for use of some smaller capacity circuit elements.