Designs based on the KR1182PM1 chip. Encyclopedia of radio electronics and electrical engineering

Encyclopedia of radio electronics and electrical engineering / Power regulators, thermometers, heat stabilizers

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Thyristor regulator

The device is designed for phase regulation of alternating voltage on an active load. Can be used to control incandescent lamps, heating elements. With a certain combination of the active and reactive components of the windings, it is possible to control the speed of rotation of AC collector motors. Careful selection of capacitors that form a sawtooth voltage (C2, C3) in order to balance the output voltage can ensure the efficiency of the regulator on the primary winding of a transformer that has an active load in the secondary circuit.

Details

Regulator parameters with the components shown in the diagram:

Soft starter

The device is designed for phase regulation of alternating voltage on an active load. Can be used to control incandescent lamps, heating elements. With a certain combination of the active and reactive components of the windings, it is possible to control the speed of rotation of AC collector motors. Careful selection of capacitors that form a sawtooth voltage (C2, C3) in order to balance the output voltage can ensure the efficiency of the regulator on the primary winding of a transformer that has an active load in the secondary circuit.

Details

Controller parameters with components shown in the diagram

Actuator of the control system

The device is designed for remote power control on the load. It provides galvanic isolation of the control part from the mains voltage. The control is carried out by discharging the capacitor C1 either by pulses or by a decent current flowing through the optocoupler V1. The control system can be built on the basis of an analog controller or on the basis of a PWM controller. It is also possible to use microprocessor control. In this case, it is desirable to have a hardware PWM output for the selected microprocessor.

Details

Controller parameters with components shown in the diagram

Drawing of a universal printed circuit board (view from the PCB side):

The universal printed circuit board provides for the installation of any components of all the above circuits without modifications. When operating devices with significant currents (more than 5 A), thyristors must be installed on a radiator using heat-conducting paste KPT-8. Instead of KU714A, it is possible to use KU714 with any letter index or any thyristor of the KU710 series. If the operation of devices with lower currents is expected, then it is possible to use other devices, for example, KU709, KU712, T106-10, designed for the corresponding voltages. When installing thyristors T106-10, it should be noted that the order of their conclusions is different than that of KU709, KU710, KU712, KU714.

Publication: cxem.net

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