CS240281B1 - Circuit for gradual change of power on and off - Google Patents

Abstract

The solution relates to a circuit for gradual change of power input after switching on and off. The third terminal (9) of the integrated circuit for phase control is connected to the first capacitor (4) and the resistive divider (1), connected to the R switch (6), the second pole of the first capacitor (4) and the second capacitor (3). A diode (2) is connected in parallel to the second capacitor (3) with the cathode leading to the second pole of the second capacitor (3), the resistive divider (1) and the resistor (5), connected to the second terminal (8) of the integrated circuit for phase control, which is connected to the second pole of the switch (6) by the first terminal (7). The solution can be used in the electrical industry.

Description

The solution relates to a circuit for gradually changing the power consumption after switching on and off.

A first capacitor (4) and a resistive divider (1) connected to the switch (6), the second pole of the first capacitor (4) and the second capacitor (3) are connected to the third terminal (9) of the phase control integrated circuit. The second capacitor (3) is connected in parallel by a cathode diode (2) leading to the second pole of the second capacitor (3), a resistive divider (1) and a resistor (5) connected to the second terminal (8) of the phase control integrated circuit. the first terminal (7) is connected to the second pole of the switch (6).

The solution can be used in the electrical industry.

The invention relates to a circuit for gradually changing the power consumption after switching on and off. It solves the problem of gradually increasing and decreasing the power input of an AC power appliance as well as an inductive character controlled by a mechanical or semiconductor switch.

The wiring used so far is disadvantageous in terms of sensitivity to mains voltage changes and the complicated wiring of control circuits. When switched off, interference is suppressed at the expense of the power change delay after switching on.

These drawbacks are eliminated by the circuit for gradually changing the power consumption after switching on and off according to the invention. A capacitor and a resistive divider connected to a switch, a second pole of the first capacitor and a second capacitor, to which a diode is connected in parallel with the cathode leading to the second pole of the second capacitor, a resistive divider, and a resistor connected to a second terminal of the integrated circuit for phase control, which is connected by a first terminal to the second pole of the switch.

By using the circuit according to the invention in a bistro switch, not only the optical-physiological perception is beneficial, but also extends the life of the bulbs to three times. It is also possible to considerably reduce the starting current of rotating machines. The interference is only limited to the transient state, the triac is always either closed or fully open, even when the mains voltage changes by 40%.

The circuit according to the invention is described in more detail in the following description by means of a schematic drawing which shows a schematic representation of the circuit connection.

The complete circuit comprises eight resistors, four voltage capacitors pa, a volt unit, a diode, and a triac with an integrated phase control circuit, referred to as MAA 436. The first terminal 9 of the integrated phase I circuit is connected to a first capacitor 4 and a resistor. , divider-ilp, connection to switch. 6, the second pole of the first capacitor 4 and the second capacitor 3?

A diode 2 is connected in parallel to the capacitor 3 by means of a cathode leading to the second pole of the second capacitor 3, a resistive divider 1 and a resistor 5 connected to the second terminal 8 of the integrated phase I control circuit. the constant is adjustable from 0.1 to 20 seconds, say '*

Ease of connection is achieved by using the first capacitor 4 and the second capacitor 3 in the integrated circuit I for the phase control MAA. 436, which are charged at different voltages when switch 6 is open. Closing the switch 6 changes the voltage at the input of the MAA 436 phase control integrated circuit to match the lowest power consumption of the appliance. The input then changes exponentially and gradually increases the power input. When switched off, the power consumption decreases with time constant according to capacitance and resistance values.

The invention will be used in the electrical industry.

Claims (2)

SUBJECT Circuit for successive power change after switching on and off, characterized in that a first capacitor (4) and a resistive divider (1) connected to the switch (6) are connected to the third terminal (9) of the integrated circuit (I) for phase control. to the second pole of the first capacitor (4j) and the second capacitor (3) to which the diode is connected in parallel (2 J by a cathode leading to a second pole of the second capacitor (3), a resistive divider (1) and a resistor [5j] connected to the second terminal (8) of the phase control integrated circuit (I) which is the first terminal (7) connected to the other pole of the switch (6).