The single-phase sine wave frequency conversion stabilized voltage supply is designed and made

  
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When the input voltage is 198- 242V, the mean value of the load current is 0. 5- 1A, the mean value of the output voltage should keep in 15V, the error is smaller than 5% : 1 When the input voltage is 198- 242V, the mean value of the load current is 0. 5- 1A, the mean value of the output voltage should keep in 15V, the error is smaller than 1%; 2
The single-phase sine wave frequency conversion stabilized voltage supply is designed and made - schematic

Design and make and measure, reveal the circuit of the output voltage of stabilized voltage supply, electric current, frequency and power of this frequency conversion, the error in emasurement is smaller than 5%. 1 Can use, produce SPWM Puls e-width modulation of sine wave Corrugate special purpose chip; 2 The output power can be calculated through the measured value of the electric current, voltage. Single-phase rectifying circuit: The following picture of choosing the rectifying circuit of single-phase half control is shown. This circuit control is flexible, the adjustable within the specific limits of the magnitude of output voltage, so become the selected scheme. But we find while finishing this part of a circuit. The flip flop of this circuit has certain difficulty. Under not making the situation that the rigid index stipulates to the rectifier while designing the index, we can well adopt the single-phase uncontrolled rectifying circuit, thus reduce the design of the flip flop of two triode thyristors. Originally design RC over voltage killer circuit R9, C5 adopted to connect in parallel in the second order of the voltage transformer Component side, In order to absorb the released energy of unshakable in one`s determination magnetic field of the voltage transformer. And change and store it for electric field energy of the capacitor, series resistance for consume some energy and inhibit the intersection of RC and...



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