Voltage regulator circuit

Abstract

A voltage regulator circuit comprises a transformer T1, a diode D1 and a diode D3, a voltage-regulator tube D2, an audion Q1, a resistor R1 and a resistor R2, a capacitor C1and a capacitor C2. The transformer T1 comprises a primary winding T1a, a secondary winding T1b and an auxiliary winding T1c. One end of the auxiliary winding T1c is grounded and the other end is connected with the positive pole of the diode D1 through the resistor R1, the negative pole of the diode D1 is connected with the collector electrode of the audion Q1, the emitting electrode of the audion Q1 is connected with the positive pole of the diode D3, and the negative pole of the diode D3 is connected with the output end of the voltage regulator circuit. The positive pole of the capacitor C2 is connected with the negative pole of the diode D1, the negative pole of the capacitor C2 is connected with earth. The negative pole of the voltage-regulator tube D2 is connected with the base electrode of the audion Q1, the positive pole of the voltage-regulator tube D2 is grounded. The resistor R2 is connected in parallel between the collector electrode of the audion Q1 and the negative pole of the voltage-regulator tube D2. The positive pole of the capacitor C1 is connected with the negative pole of the diode D3, the negative pole of the capacitor C1 is grounded. The voltage regulator circuit can output more smooth voltage signals.

Description

【Technical field】 [0001] The invention relates to the field of electronic technology, in particular to a voltage stabilizing circuit for stabilizing voltage. 【Background technique】 [0002] In electronic products, the stability of the power supply system determines whether the entire electronic product works normally. Most of the current electronic products are equipped with an integrated circuit chip (IC) and a power supply circuit for supplying power to the integrated circuit chip. [0003] In the traditional integrated circuit chip power supply circuit, the current-limiting resistor and diode are used for rectification, and then an electrolytic capacitor is set for filtering to further smooth the rectified signal. [0004] Generally speaking, for integrated circuit chips to work normally and stably, the power supply voltage must be stable, and no useless interference signals appear. The output voltage of the traditional integrated circuit chip power supply circuit is no...

AI Technical Summary

Problems solved by technology

The output voltage of the traditional integrated circuit chip power supply circuit is not stable enough, and the ripple is large, which will cause the integrated circuit chip to work unstable and even malfunction

That is, the current limiting resistor and capacitor alone are not enough to rectify the pulsating signal into a smooth DC signal, which is not conducive to the stable operation of the integrated circuit chip

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