Switching mode power controller of large dynamic range

Details Switching mode power controller of large dynamic range Switching mode power controller of large dynamic range

1974-10-04

1977-04-26

Smith, Jr., David

Electrical transmission or interconnection systems

Wave form or wave shape determinative or pulse-producing...

318341, 318599, H03K 300

Patent

active

040203611

ABSTRACT:
This invention concerns improvements in the switching control of power or voltage into a load. Specifically it is concerned with a new time sequencing technique for the switching states of a four-switch configuration for the purpose of producing a three-state, pulse-duration-modulated output having a more ideal waveform and consequently better fidelity in the synthesis of a desired output signal. The new sequencing technique permits pulses of short time duration to be produced without requiring individual switches to recover quickly after having changed states from on to off or from off to on. This results in short pulses being produced with greater accuracy in the length of the pulse and consequently extends the useful dynamic range available at the output.

REFERENCES:
patent: 3175167 (1965-03-01), Lloyd
patent: 3260912 (1966-07-01), Gregory
patent: 3523228 (1970-08-01), Currie
patent: 3525029 (1970-08-01), Joslyn et al.
patent: 3706923 (1972-12-01), Dunfield

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