Variable load controlled blocking oscillator power converter
Abstract
Abstract THIS IS PROVIDED A HIGH POWER, CURRENT LIMITED, VOLTAGE REGULATED POWER CONVERTER SUITABLE FOR PRINTED CIRCUIT BOARD MOUNTING. A NORMALLY CLAMPED OSCILLATOR OPERATES AS A HIGH FREQUENCY SWITCHING CIRCUIT AND IT IS CONTROLLED BY AN ACTUATABLE OSCILLATOR CONTROL CIRCUIT. THE OPERATING FREQUENCY OF THE OSCILLATOR IS CONTROLLED SO AS TO PROVIDE A DC OUTPUT LEVEL WHICH IS MAINTAINED AT A PREDETERMINED LEVEL. UNDER A CLAMPED CONDITION, USUALLY AT NO LOAD, THE FREQUENCY REQUIRED TO GIVE THIS LEVEL IS THE LOWER OPERATING FREQUENCY LIMIT. A COMPARISON CIRCUIT CONTINUOUSLY COMPARES THE DC OUTPUT VOLTAGE WITH A PREDETERMINED LEVEL SET BY REFERENCE SETTING CIRCUIT. SHOULD THE DC OUTPUT VOLTAGE START TO FALL BELOW THE PREDETERMINED LEVEL, A VOLTAGE SIGNAL IS PRODUCED BY THE COMPARISON CIRCUIT. THIS VOLTAGE SIGNAL IS DIRECTED TO THE OSCILLATOR CONTROL CIRCUIT TO UNCLAMP THE OSCILLATOR TO OSCILLATE AT A FREQUENCY NECESSARY TO RESTOR THE OUPUT VOLTAGE TO THE PREDETERMINED VOLTAGE LEVEL.
Inventors
- 👤 Peter G Bartlett
- 👤 Garland E Fieser
Bibliographic Details
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