WO2014169560A1 - Direct-current bidirectional controller - Google Patents

Abstract

A direct-current bidirectional controller, which controls an inputted direct-current power supply, so as to realize a bidirectional full-wave output that a positive electrode of a 4.5-36V direct-current power supply alternately converts with a negative electrode thereof. The bidirectional controller comprises a chip IC1 and an H-bridge circuit controlled by the chip IC1. By adopting the IC chip and a crystal triode as major elements for amplifying power and converting between the positive electrode and the negative electrode, the bidirectional controller reduces costs and decreases energy consumption. The bidirectional controller is suitable for being used as a low power controller of a light string for alternately converting between the positive electrode and the negative electrode of the 4.5-36V direct-current power supply.

Description

 DC bidirectional controller

 The utility model belongs to the technical field of bidirectional controllers, and particularly relates to a DC bidirectional controller.

Background technique

 Figure 5 shows an embodiment of the prior art digital bidirectional controller principle, which implements "OUT 1 or OUT 2 or OUT 3 or OUT 4" with "IC1" or "Q1 or Q2 or Q3 or Q4 triac". The two-wire bidirectional output of OUT G"; that is, through the characteristics of the triac, through the triggering of IC1, forward or reverse conduction, the disadvantages are: First, the output of the power supply is half-wave in each direction The second is for the small-power electric appliances of the string type, which has high cost and large energy consumption.

Summary of the invention

 The object of the present invention is to provide a DC bidirectional controller with low cost, low energy consumption and full wave output.

 The purpose of the utility model is achieved as follows:

 The DC bidirectional controller, the input DC power supply is controlled by the bidirectional control circuit, and the bidirectional full-wave output of the positive and negative poles of the DC power supply of 4. 5V~36V is realized, and the bidirectional control circuit includes the IC1 chip and the IC1 chip control. The "H" bridge circuit.

The above bidirectional control circuit is: the input end of the IC1 chip is electrically connected to the DC power source, and the two control lines of the output end of the IC1 chip are electrically connected to the bases of the two transistors Q9 and Q10, respectively, and the collector and the transistor Q4 of the transistor Q9. The base is electrically connected, the emitter is electrically connected to the base of the transistor Q1, the collector of the other transistor Q10 is electrically connected to the base of the transistor Q3, the emitter is electrically connected to the base of the transistor Q2, and the collector of the transistor Q2, Q4 is set. After the electrodes are electrically connected as an output of the bidirectional control circuit, the collectors of the transistors Q1 and Q3 are electrically connected and serve as the other output of the bidirectional control circuit, each of the three poles. The bases of the tubes Q1, Q2, Q3, Q4, Q9, and QIO are connected in series with bias resistors R1, R2, R3, R4, R6, and R7. The emitters of the transistors Q1 and Q2 are electrically connected to the DC power supply. One electrode is electrically connected, and the emitters of the transistors Q3 and Q4 are electrically connected and electrically connected to the other electrode of the DC power source.

 The above-mentioned transistors Q1, Q2, Q9, and Q10 are PNP type transistors, and the transistors Q3 and Q4 are between the output terminals of the NPN type transistors 83 and Q3 which are electrically connected to the collectors of the transistors Q1 and Q3. The resistor R12 is connected in series with the connecting wire.

 A memory chip IC2 for providing a control signal to the IC1 chip is connected to the IC1 chip.

 The above IC1 chip is provided with a function selection switch.

 The above DC power supply is a DC power supply of 4. 5V to 36V.

 The technical effect of the utility model compared with the prior art is:

 1. The bidirectional control circuit of the utility model uses an IC chip and a transistor as main components for power amplification and positive and negative conversion, and has low cost and low energy consumption.

 2. The utility model is suitable for the low-power DC bidirectional controller of the alternating current and negative pole of the DC power supply of 4. 5V~36V.

DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a circuit diagram of Embodiment 1 of the present invention.

 Figure 2 is a circuit diagram of Embodiment 2 of the present invention.

 Figure 3 is a circuit diagram of Embodiment 3 of the present invention.

 Figure 4 is a circuit diagram of Embodiment 4 of the present invention.

 Figure 5 is a schematic diagram of a prior art circuit.

detailed description The present invention will be further described in the following with reference to the accompanying drawings:

 Example 1, see Figure 1:

 The DC bidirectional controller, the input DC power supply is controlled by the bidirectional control circuit, and the bidirectional full-wave output of the positive and negative poles of the DC power supply of 4. 5V~36V is realized, and the bidirectional control circuit includes the IC1 chip and the IC1 chip control. The "H" bridge circuit.

 The above bidirectional control circuit is: the input end of the IC1 chip is electrically connected to the DC power source, and the two control lines of the output end of the IC1 chip are electrically connected to the bases of the two transistors Q9 and Q10, respectively, and the collector and the transistor Q4 of the transistor Q9. The base is electrically connected, the emitter is electrically connected to the base of the transistor Q1, the collector of the other transistor Q10 is electrically connected to the base of the transistor Q3, the emitter is electrically connected to the base of the transistor Q2, and the collector of the transistor Q2, Q4 is set. After the electrodes are electrically connected, as an output terminal of the bidirectional control circuit, the collectors of the transistors Q1 and Q3 are electrically connected as the other output end of the bidirectional control circuit, and the bases of each of the transistors Q1, Q2, Q3, Q4, Q9 and Q10 Bias resistors R1, R2, R3, R4, R6, and R7 are connected in series on the connecting wires. The emitters of the transistors Q1 and Q2 are electrically connected to one electrode of the DC power source, and the emitters of the transistors Q3 and Q4 are electrically connected. Electrically connected to the other electrode of the DC power source.

 The above-mentioned transistors Ql, Q2, Q9, and Q10 are PNP type transistors, and the transistors Q3 and Q4 are NPN type. The above-mentioned DC power supply is a DC power supply of 4. 5V to 36V.

 The above IC1 chip is provided with a function selection switch.

 working principle:

 1. The input DC power supply is input at the two pins of "IN", and the input voltage is all DC power supply (including battery) of DC4. 5V to 36V;

2. Two-way full implementation through IC1 and "H" bridge composed of Ql, Q2, Q3, Q4 and Q9, Q10 Wave output; Its working principle and control method are: IC1 gives Q9 a trigger signal, after Q9 is turned on, simultaneously gives Q1 - a high level trigger signal and Q4 - a bottom level trigger signal, so that Q1 and Q4 At the same time, it is turned on, so that the power supply flows from Q4 to "OUT 2" input to the external load, and then turns to Q1 after OUT 1. Similarly, if IC1 gives Q10 a trigger signal, after Q10 is turned on, Q2 is high. Level trigger signal and Q3 - bottom level trigger signal, make Q2 and Q3 turn on at the same time, so DC power flows from Q3 into OUT 1 input to external load, after OUT 2 and then to Q2; use to Q9 and Q10 Different duty cycle time trigger signals and "H" bridge operation principle, so that the positive and negative polarity of the power supply between OUT 1 and OUT 2 are reversed, and full-wave bidirectional output is realized. At the same time, by Q9 and Q1 and Q4 or by Q10 and Q2 and Q3 to achieve mutual sales conduction, at the same time realize the power amplification function of the circuit.

 3. SW-PW button switch for function selection.

 Example 2, see Figure 2:

 The circuit of the second embodiment is basically the same as the circuit of the first embodiment, and the difference is that: the collector of the above-mentioned transistor Q Q3 is electrically connected and connected in series with the output terminal of the collectors of the transistors Q1 and Q3. There is a resistor R12.

 The working principle of Embodiment 2 is basically the same as that of Embodiment 1. The difference is that: In the output terminal of the collectors of the transistors Q1 and Q3, the resistor R12 is connected in series, and R12 is optional, and R12 is changed. A combination of the wiring structure of the external light string is changed by adjusting the output voltage.

 Example 3, see Figure 3:

 The circuit of the third embodiment is basically the same as the circuit of the first embodiment, and the difference is that the IC1 chip is connected to the memory chip IC2 for providing a control signal to the IC1 chip.

The working principle of the third embodiment is basically the same as that of the first embodiment. The difference lies in: a memory chip IC2 for providing a control signal to the IC1 chip is connected to the IC1 chip, and the control is realized according to the stored data. Example 4, see Figure 4:

 The circuit of the fourth embodiment is basically the same as the circuit of the third embodiment, and the difference is that: the collector of the above-mentioned transistor Q Q3 is electrically connected and connected in series with the output terminal of the collectors of the transistors Q1 and Q3. There is a resistor R12.

 The working principle of Embodiment 4 is basically the same as that of Embodiment 3, and the difference lies in: the connecting wire between the output terminals of the transistors Q1 and Q3 after being electrically connected to the collectors of the transistors Q1 and Q3. There is a resistor R12 in series, and the size of R12 is optional. By changing R12, the output voltage can be adjusted to change the combination of the wiring structure of the external string.

 The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, equivalent changes made by the structure, shape, and principle of the present invention should be covered by the present invention. The scope of protection of utility models.

Claims

claims 1. DC bidirectional controller, characterized in that: the input DC power supply is controlled by a bidirectional control circuit to achieve a bidirectional full-wave output of alternating positive and negative poles of the 4.5V~36V DC power supply. The bidirectional control circuit includes "H" bridge circuit controlled by IC1 chip. 2. The DC bidirectional controller according to claim 1, characterized in that: the bidirectional control circuit is: the input end of the IC1 chip is electrically connected to the DC power supply, and the two control lines at the output end of the IC1 chip are respectively connected to two The bases of transistors Q9 and Q10 are electrically connected, the collector of one transistor Q9 is electrically connected to the base of transistor Q4, the emitter is electrically connected to the base of transistor Q1, and the collector of the other transistor Q10 is electrically connected to the base of transistor Q3. connection, the emitter is electrically connected to the base of transistor Q2, the collectors of transistors Q2 and Q4 are electrically connected and serve as an output end of the bidirectional control circuit, and the collectors of transistors Ql and Q3 are electrically connected and serve as another output of the bidirectional control circuit. terminal, the base wires of each transistor Ql, Q2, Q3, Q4, Q9, Q10 are connected in series with bias resistors Rl, R2, R3, R4, R6, R7, and the emitters of transistors Ql and Q2 are electrically connected. It is electrically connected to one electrode of the DC power supply, and the emitters of the transistors Q3 and Q4 are electrically connected to the other electrode of the DC power supply. 3. The DC bidirectional controller according to claim 2, characterized in that: the transistors QK Q2, Q9, and Q10 are PNP type transistors, and the transistors Q3 and Q4 are NPN type transistors. 4. The DC bidirectional controller according to claim 2, characterized in that: on the connecting wire between the output terminals after the collectors of the triodes QQ3 are electrically connected to the collectors of the triodes Q1 and Q3 There is resistor R12 in series. 5. The DC bidirectional controller according to claim 1, characterized in that: the IC1 chip is connected to a memory chip IC2 that provides a control signal for the IC1 chip. 6. The DC bidirectional controller according to claim 1, characterized in that: the IC1 chip is provided with a function selection switch. 7. The DC bidirectional controller according to any one of claims 1 to 6, characterized in that: the DC power supply is a DC power supply of 4.5V~36V.