PROTECTION CIRCUIT

PURPOSE:To prevent destruction of an output element by connecting a protection diode in series with an output active element of an amplifier driving an inductive load and connecting a commutation diode to the output active element in parallel. CONSTITUTION:A DC motor 19 is driven by power passing th...

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Bibliographische Detailangaben
Hauptverfasser:	KOSEKI NORIO, SOMEYA HIDEO
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent destruction of an output element by connecting a protection diode in series with an output active element of an amplifier driving an inductive load and connecting a commutation diode to the output active element in parallel. CONSTITUTION:A DC motor 19 is driven by power passing through an integrator comprising inductors 7, 8 and capacitors 9, 10. The input to the integration device is an output of a power field effect transistor (TR) and a switching waveform. Thus, the inductors 7, 8 generate a high voltage at opening, but since the protection diodes 1, 6 are connected to the output of the amplifier, the power does not pass through a diode built in the power field effect TR but through the commutation diodes 2-5 and the power is consumed.