JPS5915134U - Voltage stabilization circuit with reset signal generation function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram for explaining a conventional DC voltage stabilization circuit with a reset signal generation function, Fig. 2 is a waveform diagram for explaining its operation, and Fig. 3 shows an embodiment of this invention. The block diagram and FIG. 4 are waveform diagrams for explaining the operation. 1: Commercial power supply, 2: Power switch, 4: Main rectifier smoothing circuit, 5: DC voltage stabilization circuit, 8: Capacitor, 11 Two-level detection circuit, 12: Sub-rectifier smoothing circuit, 13: Error amplifier, 14: Reference voltage Generation circuit, 18: switch element. Amendment October 30, 1982 The claims for utility model registration and the brief description of the drawings are amended as follows. O Utility Model Registration Claims A: A main rectifier and smoothing circuit, and B: Outputs a voltage higher than the smoothed output voltage of the main rectifier and smoothing circuit, and when the power is turned off, the output voltage decreases at a slower rate than the voltage drop rate of the main rectifier and smoothing circuit. A sub-rectifying and smoothing circuit in which the relationship between the time constant and load current of the smoothing circuit is set to a voltage stabilizing circuit that stabilizes the output voltage of the main rectifying and smoothing circuit using the reference voltage output from the generating circuit; F a capacitor whose charging voltage is rapidly discharged by this switch element; G a level detection circuit that detects that the voltage of this capacitor is below a desired level and generates a reset signal; Voltage stabilization circuit with reset signal generation function. Brief explanation of the drawings: “Figure 1 is a block diagram for explaining a conventional DC voltage stabilization circuit with a reset signal generation function, Figure 2 is a waveform diagram for explaining its operation, and Figure 3 is a diagram for explaining the conventional DC voltage stabilization circuit with reset signal generation function. FIG. 4 is a waveform diagram for explaining the operation. 1: Commercial power supply, 2: Power switch, 4: Main rectifier smoothing circuit, 5: DC voltage stabilization circuit, 8: Capacitor, 11 Two-level detection circuit, 12: Sub-rectification smoothing circuit, 13: Error amplifier, 14: Reference voltage generation circuit, 18: Switch element.

Claims (1)

[Claims for Utility Model Registration] A: A main rectifier and smoothing circuit; B: A voltage higher than the smoothed output voltage of the main rectifier and smoothing circuit, and when the power is turned off, the output voltage is lower than the voltage drop rate of the main rectifier and smoothing circuit. A sub-rectifying and smoothing circuit in which the relationship between the time constant of the smoothing circuit and the load current is set to decrease; C a reference voltage generation circuit that generates a constant reference voltage from the output voltage of this sub-rectifying and smoothing circuit; and D this reference. a voltage stabilizing circuit that stabilizes the output voltage of the main rectifying and smoothing circuit using the reference voltage output from the voltage generating circuit; F is a capacitor whose charging voltage is rapidly discharged by this switch element; G is a capacitor that detects that the voltage of this capacitor is below the cut-off value and generates a reset signal. A voltage stabilization circuit with a reset signal generation function, consisting of a level detection circuit and a reset signal generation function.