FIELD: electricity.
SUBSTANCE: system for controlling electrical heating temperature comprises an industrial controller as a control device; a multivibrator connected to the output of said controller; a line of power field-effect transistors controlled through the multivibrator from the discrete output of the controller and operating in pulsed mode as switching elements; a thermocouple connected to the input of the controller through a normalising transducer as a temperature sensor; controller and multivibrator power supply units; a three-phase step-down transformer which powers the power part of the system through a diode rectifier; a capacitor unit which smoothes voltage at the output of the rectifier.
EFFECT: preventing phase skew in the mains, preventing current surge, high accuracy of control, high energy efficiency by reducing power loss.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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