Groundless zero power consumption voltage stabilizing circuit and construction method

Abstract

The application provides a zero-grounding zero-power consumption voltage stabilizing circuit and a construction method, which comprises a current-limiting main path and a current-expanding branch path arranged between a power supply and an output end; the current-limiting main path is composed of a resistor; the current-expanding branch path is composed of a transistor and a branch current-limiting resistor; a resistor as a control resistor is connected in parallel between the emitter and the base of the transistor and is located on the current-limiting main path or the current-expanding branch path. The voltage stabilizing effect of zero-power consumption is realized at low cost only by using the most basic electronic components such as resistors and transistors and without grounding, the output current can be followed and multi-staged adjusted while the voltage is stabilized according to the change of load power, the normal work of the load is ensured, and the volume of the electronic device is greatly reduced due to the absence of grounding.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic circuit, in particular to a zero ground line and zero power consumption voltage stabilizing circuit and construction method. BACKGROUND

[0002] The existing voltage stabilizing circuit generally needs to use a relatively complex control element, and needs to be grounded, so it is inevitable to produce power consumption. SUMMARY

[0003] The present application is directed to the defects and deficiencies of the prior art, and proposes a zero ground line and zero power consumption voltage stabilizing circuit and construction method, which only uses the most basic electronic elements such as resistors and triodes and does not need to be grounded, and realizes the zero power consumption voltage stabilizing effect at low cost, which can follow the multi-stage adjustment of the output current while stabilizing the voltage according to the change of the load power, and guarantees the normal work of the load. Since it does not need to be grounded, it also greatly reduces the size of the electronic device.

[0004] The specific technical scheme is as follows:

[0005] A zero ground line and zero power consumption voltage stabilizing circuit, characterized in that it comprises: a current limiting main path and an expanded current branch path arranged between a power supply and an output terminal; the current limiting main path is composed of resistors; the expanded current branch path is composed of a triode and a branch current limiting resistor; a resistor connected in parallel between the emitter and the base of the triode as a control resistor is located on the current limiting main path or the expanded current branch path.

[0006] Preferably, the current limiting main path is composed of at least three resistors connected in series; the resistor on the current limiting main path serves as a control resistor of the triode or as a connecting bridge between the expanded current branch paths, and at least one resistor on the current limiting main path serves as a connecting bridge.

[0007] Preferably, the resistor on the current limiting main path closest to the output terminal is the first level control resistor, and the resistor closest to the power supply is the second level control resistor; the expanded current branch path controlled by the first level control resistor has a higher priority than the expanded current branch path controlled by the second level control resistor.

[0008] Preferably, on the current limiting main path, there is a resistor as a connecting bridge between the first level control resistor and the second level control resistor.

[0009] A no-ground zero-power voltage stabilizing circuit is characterized in that it is composed of four resistors and two triodes; resistor R3, resistor R1 and resistor R2 are arranged between the power supply and the output terminal and form a series connection; the emitter of PNP triode Q1 is connected to the power supply, the base is connected between resistor R3 and resistor R1, and the collector is connected between resistor R1 and resistor R2; the emitter of NPN triode Q2 is connected to the output terminal, the base is connected between resistor R1 and resistor R2, and the collector is connected between resistor R3 and resistor R1 through resistor R4.

[0010] Preferably, the resistance of resistor R2 is greater than the resistance of resistor R3; the turn-on voltage of triode Q1 and triode Q2 is the same.

[0011] Preferably, it further comprises resistor R5, resistor R6, resistor R7 and PNP triode Q3; resistor R5 is connected between the emitter of triode Q1 and the power supply; the emitter of triode Q3 is connected to the power supply through resistor R6, the base is connected between resistor R5 and the emitter of triode Q1, and the collector is connected to the output terminal through resistor R7.

[0012] Preferably, it further comprises resistor R8, resistor R9, resistor R10 and NPN triode Q4; resistor R8 is connected between the emitter of triode Q2 and the output terminal; the emitter of triode Q4 is connected to the input terminal through resistor R9, the base is connected between resistor R8 and the emitter of triode Q2, and the collector is connected to the power supply through resistor R10.

[0013] A construction method of a no-ground zero-power voltage stabilizing circuit is characterized in that a resistor or a plurality of resistors connected in series is arranged between the power supply and the output terminal as a current-limiting main path, and a triode and a branch current-limiting resistor are used to form an extended current branch; a resistor as a control resistor is connected in parallel between the emitter and the base of the triode and is located in the current-limiting main path or the extended current branch; when the load power is lower than a threshold value, the power supply only supplies power through the current-limiting main path; when the load power increases, the control resistor controls the state of the triode through voltage division, so that the extended current branch provides compensation for the output current of the circuit.

[0014] Preferably, the current-limiting main path is composed of at least three resistors connected in series; the resistors in the current-limiting main path act as control resistors of the triode or as connecting bridges between the extended current branches, and at least one resistor in the current-limiting main path acts as a connecting bridge.

[0015] The present application and its preferred schemes are realized by using only the most basic electronic components such as resistors and triodes, and do not require grounding, thereby achieving the effect of zero-power voltage stabilization at a low cost. The present application can follow the changes in load power and simultaneously stabilize the voltage while performing multi-stage adjustment on the output current, thereby ensuring the normal operation of the load. Since grounding is not required, the volume of electronic devices is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be described in further detail below in connection with the accompanying drawings and specific embodiments:

[0017] Figure 1 The first embodiment of the application is a schematic diagram of the circuit principle;

[0018] Figure 2 The second embodiment of the application is a schematic diagram of the circuit principle;

[0019] Figure 3 The third embodiment of the application is a schematic diagram of the circuit principle. DETAILED DESCRIPTION

[0020] In order to make the features and advantages of the patent more obvious and easy to understand, the following specific examples are given, and the detailed description is as follows in combination with the accompanying drawings:

[0021] The application proposes a new construction idea and method of a zero-grounding and zero-power-consumption voltage stabilizing circuit, the gist of which is to set a resistor or a plurality of series-connected resistors as a current-limiting main path between the power supply and the output terminal, and to use a transistor and a branch current-limiting resistor to form an extended current branch; a resistor as a control resistor is connected in parallel between the emitter and the base of the transistor and is located on the current-limiting main path or the extended current branch; when the load power is lower than a threshold value, the power supply only supplies power through the current-limiting main path; when the load power increases, the control resistor controls the state of the transistor through voltage division, so that the extended current branch provides compensation for the output current of the circuit.

[0022] Such a design can realize the followability adjustment of the load power increase requiring larger current under the premise of voltage stabilization without grounding and using a more complex control chip, realizes zero power consumption and small device size, and on the other hand, such a design scheme also has scalability, can increase any number of extended current branches according to actual needs, and further improves the stability of the circuit.

[0023] In order to ensure the stability of actual work, the following features are added in the three embodiments provided below:

[0024] The current-limiting main path is composed of at least three series-connected resistors; the resistors on the current-limiting main path serve as control resistors of the transistor or as connection bridges between the extended current branches, and at least one resistor on the current-limiting main path serves as a connection bridge.

[0025] Among them, the resistor on the current-limiting main path closest to the output terminal is the first-level control resistor, and the resistor closest to the power supply is the second-level control resistor; the priority of the extended current branch controlled by the first-level control resistor is higher than that of the extended current branch controlled by the second-level control resistor.

[0026] In other words, when the load power increases, the "regulating switch" closest to the load is turned on first. Based on the characteristics of transistors, since transistors of the same type have essentially the same on-state voltage, by properly setting the values ​​of each resistor and their proportional relationships, it can be ensured that after each current-amplifying branch is turned on, its corresponding transistor operates in the amplification region, thus guaranteeing the smoothness of current amplification. The connecting bridge, by creating an interlock-like characteristic between the control resistor and other current-amplifying branches, provides feedback control, making the voltage regulation and adjustment more stable.

[0027] like Figure 1 As shown, in the first embodiment of the present invention, the groundless zero-power voltage regulator circuit consists of four resistors and two transistors.

[0028] Resistors R3, R1, and R2 are connected in series between the power supply and the output terminal, forming the main current-limiting circuit. In the initial state after load startup, because the current is small, only the main current-limiting circuit is conducting. At this time, the load current is equal to the current in the main current-limiting circuit.

[0029] If the resistance values ​​of each resistor are set to be different, the voltage drop across each resistor will also be different. If the resistor on the main circuit is used as the control resistor, then a multi-level control with different starting conditions for the current expansion branch is formed.

[0030] In this embodiment, the emitter of the PNP transistor Q1 is connected to the power supply, the base is connected between resistors R3 and R1, and the collector is connected between resistors R1 and R2; thus forming a control switch for a current-amplifying branch.

[0031] The emitter of the NPN transistor Q2 is connected to the output terminal, between the base resistor R1 and resistor R2, and the collector is connected between resistor R3 and resistor R1 via resistor R4, thus forming another control switch for the current amplification branch.

[0032] In this structure, resistor R1 serves as a connecting bridge, while resistors R2 and R3 serve as control resistors.

[0033] Since the turn-on voltages of transistors Q1 and Q2 are set to be the same, in this embodiment, the resistance value of resistor R2 needs to be greater than that of resistor R3. In this way, when the load power increases to a certain level, such as when the voltage drop across R2 is 0.5V-0.7V, transistor Q2 will turn on first, forming the first current-boosting branch, which meets the requirements of voltage regulation and current boosting. At this time, I_OUT = I3 + I11.

[0034] When the power is further increased, the voltage drop across R3 can also be 0.5V-0.7V. At this time, in addition to the R3-R1 channel, the transistor Q1 opens two new current-expanding branches to further compensate for the working current required by the load.

[0035] In this process, resistor R1 acts as a connecting bridge.

[0036] like Figure 2 As shown, the second embodiment of the present invention adds a current-amplifying branch based on the first embodiment, aiming to demonstrate the scalability of the design provided by this embodiment. It includes resistors R5, R6, and R7, and a PNP transistor Q3; resistor R5 is connected between the emitter of transistor Q1 and the power supply; the emitter of transistor Q3 is connected to the power supply via resistor R6, the base is connected between resistor R5 and the emitter of transistor Q1, and the collector is connected to the output terminal via resistor R7.

[0037] Although resistor R5 is located in the current-amplifying branch, it still serves as a control resistor. With transistor Q1 conducting, a voltage divider is generated across it. When the voltage drop across resistor R5 is 0.5V-0.7V, transistor Q3 conducts, providing a larger current to the overall circuit.

[0038] like Figure 3 As shown, the third embodiment of the present invention adds a current-amplifying branch in another direction based on the first embodiment, aiming to demonstrate the scalability of the design provided by this embodiment. It includes resistors R8, R9, and R10, and an NPN transistor Q4; resistor R8 is connected between the emitter and output terminal of transistor Q2; the emitter of transistor Q4 is connected to the input terminal via resistor R9, the base is connected between resistor R8 and the emitter of transistor Q2, and the collector is connected to the power supply via resistor R10.

[0039] Resistor R8 serves as the control resistor for transistor Q4.

[0040] This patent is not limited to the above-described preferred embodiments. Anyone can derive other forms of groundless zero-power voltage regulator circuits and construction methods based on the guidance of this patent. All equivalent changes and modifications made within the scope of this patent application shall fall within the scope of this patent.

Claims

1. A groundless, zero-power voltage regulator circuit, characterized in that, The non-grounded power supply comprises a current-limiting main circuit and a current-expanding branch circuit arranged between a power supply and an output terminal; the current-limiting main circuit is composed of at least three resistors connected in series; the resistors in the current-limiting main circuit serve as control resistors of transistors or as connecting bridges between the current-expanding branch circuits, and at least one resistor in the current-limiting main circuit serves as a connecting bridge; the current-expanding branch circuit is composed of a transistor and a branch current-limiting resistor; parallel resistors between the emitter and the base of the transistor serve as control resistors in the current-limiting main circuit or the current-expanding branch circuit; when the load power is lower than a threshold value, the power supply only supplies power through the current-limiting main circuit; when the load power increases, the control resistors control the state of the transistors through voltage division, so that the current-expanding branch circuits provide compensation for the output current of the circuit. The resistor closest to the output terminal in the current-limiting main circuit serves as a first-level control resistor, and the resistor closest to the power supply serves as a second-level control resistor; the current-expanding branch circuit controlled by the first-level control resistor has a higher priority than the current-expanding branch circuit controlled by the second-level control resistor. In the current-limiting main circuit, a resistor between the first-level control resistor and the second-level control resistor serves as a connecting bridge.

2. The cordless zero qu power supply circuit according to claim 1, characterized in that: The non-grounded power supply comprises four resistors and two transistors; resistors R3, R1 and R2 are arranged between a power supply and an output terminal and connected in series; the emitter of PNP-type transistor Q1 is connected to the power supply, the base is connected between resistor R3 and resistor R1, and the collector is connected between resistor R1 and resistor R2; the emitter of NPN-type transistor Q2 is connected to the output terminal, the base is connected between resistor R1 and resistor R2, and the collector is connected between resistor R3 and resistor R1 through resistor R4. The resistance value of resistor R2 is greater than that of resistor R3; the turn-on voltages of transistors Q1 and Q2 are the same.

3. The cordless zero quiescent current regulator circuit of claim 2, wherein: The non-grounded power supply further comprises resistors R5, R6, R7 and PNP-type transistor Q3; resistor R5 is connected between the emitter of transistor Q1 and the power supply; the emitter of transistor Q3 is connected to the power supply through resistor R6, the base is connected between resistor R5 and the emitter of transistor Q1, and the collector is connected to the output terminal through resistor R7.

4. The cordless zero qu power supply circuit according to claim 2, wherein: The non-grounded power supply further comprises resistors R8, R9, R10 and NPN-type transistor Q4; resistor R8 is connected between the emitter of transistor Q2 and the output terminal; the emitter of transistor Q4 is connected to the input terminal through resistor R9, the base is connected between resistor R8 and the emitter of transistor Q2, and the collector is connected to the power supply through resistor R10.

5. A method for constructing a cordless zero quiescent current voltage regulator circuit, comprising: The non-grounded power supply comprises at least three resistors connected in series as a current-limiting main circuit between a power supply and an output terminal, and a current-expanding branch circuit composed of a transistor and a branch current-limiting resistor; parallel resistors between the emitter and the base of the transistor serve as control resistors in the current-limiting main circuit or the current-expanding branch circuit; when the load power is lower than a threshold value, the power supply only supplies power through the current-limiting main circuit; when the load power increases, the control resistors control the state of the transistors through voltage division, so that the current-expanding branch circuits provide compensation for the output current of the circuit. ​ The current-limiting main route is composed of at least three series-connected resistors; the resistors on the current-limiting main route serve as control resistors of the triodes or as connecting bridges between the current-expanding branches, and at least one of the resistors on the current-limiting main route serves as a connecting bridge; The resistor on the current-limiting main route closest to the output end serves as a first-stage control resistor, and the resistor closest to the power supply serves as a second-stage control resistor; the current-expanding branch controlled by the first-stage control resistor has a higher turn-on priority than the current-expanding branch controlled by the second-stage control resistor; On the current-limiting main route, there is a resistor between the first-stage control resistor and the second-stage control resistor, which serves as a connecting bridge.

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