Micro power consumption voltage stabilizer for quartz clock lithium battery

Abstract

The invention discloses a micro power consumption voltage stabilizer for a quartz clock lithium battery. A voltage stabilizing circuit of the voltage stabilizer is composed of a 3.3V-4.2V direct-current voltage input end in, a 1.5V voltage output end out, a triode Q1, a triode Q2, a triode Q3, a base bias resistor R1, a collector resistor R2, a collector resistor R3, a collector resistor R4, a ceramic capacitor C1 and an electrolytic capacitor C2. When 3.3V-4.2V voltage is input into the voltage input end in, 1.5V voltage is output from the output end out after the 3.3V-4.2V voltage is processed through the voltage stabilizer. The voltage stabilizer circuit is simple in design, the current loss of the voltage stabilizer is within 5 microamp, the loss is extremely low, it can be guaranteed that the lithium battery provides stable working voltage to a quartz clock within a normal voltage range, and the service life of the quartz clock lithium battery is prolonged.

Description

technical field [0001] The invention belongs to a stabilizing circuit of a lithium battery, and in particular relates to a micro-power consumption regulator for a lithium battery of a quartz clock. Background technique [0002] The current consumption of the conventional voltage regulator circuit is generally large, especially in equipment such as quartz clocks that are powered on all the year round, the actual power consumption is not as much as the empty consumption, which seriously affects the battery life. In some circuits, series diode step-down can avoid the above problems, but there is an obvious disadvantage of fixed-value step-down, that is, the output voltage will decrease synchronously with the input voltage. The lithium battery on the quartz clock has a voltage drop of 0.9V between the full charge of 4.2V and the empty charge of 3.3V, so the output voltage is often insufficient before the battery capacity is fully discharged, which affects the use time of the lit...

AI Technical Summary

Problems solved by technology

[0002] The current consumption of conventional voltage regulator circuits is generally large, especially in equipment such as quartz clocks that are powered on all year round. The actual power consumption is not as much as empty consumption, which seriously affects the battery life.

The above problems can be avoided by connecting diodes in series to reduce voltage in some circuits, but there is an obvious disadvantage of fixed-value step-down, that is, the output voltage will decrease synchronously with the input voltage.

The lithium battery on the quartz clock has a voltage drop of 0.9V from the fully charged 4.2V to the empty 3.3V, so often the battery capacity is not fully discharged, and the output voltage is already insufficient, which affects the use time of the lithium battery on the quartz clock.

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