CN211127549U - Mini negative control positive circuit - Google Patents
Mini negative control positive circuit Download PDFInfo
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- CN211127549U CN211127549U CN201922400458.7U CN201922400458U CN211127549U CN 211127549 U CN211127549 U CN 211127549U CN 201922400458 U CN201922400458 U CN 201922400458U CN 211127549 U CN211127549 U CN 211127549U
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Abstract
The utility model discloses a mini negative control positive circuit, contain triode Q1, field effect transistor U1, diode D1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and inductance L1. constitute 6V voltage stabilizing circuit by inductance L1 and electric capacity C1, C2, C3, constitute +5V voltage stabilizing circuit by resistance R2 and electric capacity C5, triode Q1 and diode D1 and resistance R1, R3, R5 constitute switch circuit, constitute whole mini negative control positive circuit by these three parts.
Description
Technical Field
The utility model relates to the field of electronic technology, in particular to mini burden accuse positive circuit.
Background
Microwave integrated circuits are of great importance in the field of modern communications, and the application of positive and negative power supply protection circuits is required in the design of devices such as low noise amplifiers and high power amplifiers, wherein strict requirements on the sequence of positive and negative voltages are required when a power supply is powered on. This novel positive protection circuit of burden accuse, the overall arrangement is simple, compare in other more miniaturized, the circuit is more stable, be difficult for receiving the interference, exists the device that has the requirement to last electric order in circuit design, and the positive voltage of burden accuse positive circuit is just can satisfy the index by negative voltage control positive voltage, makes it can normal operating.
In the prior art, the publication No. CN203951189U discloses a negative control positive power protection circuit, which is a negative control positive power protection circuit composed of a +5V voltage regulator circuit (voltage regulator chip), a-3.3V temperature-voltage circuit (voltage regulator chip) and a switch circuit (triode and voltage regulator diode). The circuit mainly comprises two voltage stabilizing chips, a triode and a voltage stabilizing diode, is not compact enough in layout, and occupies a large space.
Disclosure of Invention
The utility model aims to provide a: compared with the prior art, the mini negative control positive circuit is more miniaturized, integrated, tube-cored and less in devices, and can occupy smaller space in a microwave integrated circuit and play a larger role.
The utility model adopts the technical scheme as follows:
a mini negative control positive circuit comprises a-6V voltage stabilizing circuit, a switching circuit and a +5V voltage stabilizing circuit, wherein the-6V voltage stabilizing circuit comprises an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected with the inductor L1 in parallel, one end of the capacitor C3, which is far away from the ground, is further connected with a pin J1, the switching circuit comprises a triode Q1, a diode D1, a resistor R1, a resistor R3 and a resistor R5, one end of the resistor R1 is connected with the other end of the inductor L1, the other end of the resistor R1 is connected with the negative electrode of a diode D1, the positive electrode of the diode D1 is connected with the emitter of the triode Q1, the base of the triode Q1 is connected with the resistor R1, the other end of the resistor R1 is connected with the ground, the collector of the triode Q1 is connected with one end of the resistor R1, the drain of the capacitor C1 is connected with the drain of the capacitor C1, the resistor C1, the drain of the resistor C1 is connected with the resistor C1, the drain of the resistor C1, the resistor C1 is connected with the resistor C1, and the drain of the.
Furthermore, one end of the capacitor C4, which is far away from the ground, is also connected with a resistor R4, and the other end of the resistor R4 is connected with a pin J2.
Further, a power supply VCC is connected between the pin J3 and the resistor R2.
Furthermore, one end of the capacitor C5 far from the ground is also connected to one end of the resistor R2 far from the power source VCC.
The working principle of the utility model is that a-6V voltage stabilizing circuit is formed by an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3, a +5V voltage stabilizing circuit is formed by a resistor R2 and a capacitor C5, a triode Q1, a diode D1, a resistor R1, a resistor R3 and a switch circuit is formed by the three parts, and the whole mini negative control positive circuit is formed by the three parts, wherein, the output voltage of a pin J2, namely OUT, is controlled by whether the source and the drain of a field effect tube U1 are conducted;
when-6V is input into the negative voltage input port and +5V is input into the positive voltage input port, the diode D1 is conducted, the triode Q1 is conducted as a switch function, the grid voltage of the field-effect tube U1 is pulled down, the source electrode and the drain electrode of the field-effect tube U1 are conducted at the moment, and the OUT output port is at a high level, so that +5V voltage can be supplied to an external circuit;
when the negative voltage input port is not input and the positive voltage input port is input with +5V voltage, the triode Q1 is in a cut-off state and is not conducted as a switch function, at the moment, the grid voltage of the field-effect tube U1 is pulled high, so that the source electrode and the drain electrode of the field-effect tube U1 are not conducted, and OUT outputs low level, namely, power is not supplied to an external circuit;
when-6V is input from the negative voltage input port and no input is input from the positive voltage input port, the diode D1 is not conducted with the triode Q1, the field effect transistor U1 does not work, and OUT outputs low level, namely, power is not supplied to an external circuit.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. compared with the prior art, the mini negative control positive circuit is more miniaturized, integrated, tube-cored and less in devices, and can occupy smaller space in a microwave integrated circuit and play a larger role.
2. The utility model discloses an area can reach micron level 1000um 600um to tube core ization has four pins, input, output, control and ground wire.
3. The utility model discloses a device still less, mainly be a triode, a diode and a field effect transistor, mainly by field effect transistor control output level.
4. The utility model provides a circuit accessible negative voltage control whole protection circuit for there is the operation that the external circuit that requires can be normal to last electric order.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic circuit diagram of the present invention;
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1.
Examples
As shown in FIG. 1, the mini negative control positive circuit comprises a-6V voltage stabilizing circuit, a switching circuit and a +5V voltage stabilizing circuit, wherein the-6V voltage stabilizing circuit comprises an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected with the inductor L1, one end, far away from the ground, of the capacitor C3 is further connected with a pin J1, the switching circuit comprises a triode Q1, a diode D1, a resistor R1, a resistor R3 and a resistor R5, one end of the resistor R1 is connected with the other end of the inductor L1, the other end of the resistor R1 is connected with the negative electrode of a diode D1, the positive electrode of the diode D1 is connected with the emitter of the triode Q1, the base of the triode Q1 is connected with the resistor R1, the other end of the resistor R1 is connected with the drain of the capacitor C1, the collector of the resistor C1 is connected with the drain of the resistor C1, and the collector of the capacitor C1, the drain of the resistor C1 are further connected with the resistor C1, the drain of the resistor C1, the resistor C1 is connected with the resistor C1, and the drain of the resistor C1, the.
The working principle of the utility model is that a-6V voltage stabilizing circuit is formed by an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3, a +5V voltage stabilizing circuit is formed by a resistor R2 and a capacitor C5, a triode Q1, a diode D1, a resistor R1, a resistor R3 and a switch circuit is formed by the three parts, and the whole mini negative control positive circuit is formed by the three parts, wherein, the output voltage of a pin J2, namely OUT, is controlled by whether the source and the drain of a field effect tube U1 are conducted;
when-6V is input into the negative voltage input port and +5V is input into the positive voltage input port, the diode D1 is conducted, the triode Q1 is conducted as a switch function, the grid voltage of the field-effect tube U1 is pulled down, the source electrode and the drain electrode of the field-effect tube U1 are conducted at the moment, and the OUT output port is at a high level, so that +5V voltage can be supplied to an external circuit;
when the negative voltage input port is not input and the positive voltage input port is input with +5V voltage, the triode Q1 is in a cut-off state and is not conducted as a switch function, at the moment, the grid voltage of the field-effect tube U1 is pulled high, so that the source electrode and the drain electrode of the field-effect tube U1 are not conducted, and OUT outputs low level, namely, power is not supplied to an external circuit;
when-6V is input from the negative voltage input port and no input is input from the positive voltage input port, the diode D1 is not conducted with the triode Q1, the field effect transistor U1 does not work, and OUT outputs low level, namely, power is not supplied to an external circuit.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (4)
1. A mini negative control positive circuit comprises a-6V voltage stabilizing circuit, a switching circuit and a +5V voltage stabilizing circuit, and is characterized in that the-6V voltage stabilizing circuit comprises an inductor L1, a capacitor C1, a capacitor C2 and a capacitor C3, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected with an inductor L1, one end of the capacitor C3, which is far away from the ground, is further connected with a pin J1, the switching circuit comprises a triode Q1, a diode D1, a resistor R1, a resistor R3 and a resistor R5, one end of the resistor R1 is connected with the other end of the inductor L1, the other end of the resistor R1 is connected with the negative electrode of a diode D1, the positive electrode of the diode D1 is connected with the emitter of the triode Q1, the base of the triode Q1 is connected with the resistor R1, the other end of the resistor R1 is grounded, one end of the collector of the triode Q1 is connected with the collector of the resistor C1, the drain of the capacitor C1 is connected with the drain of the resistor C1, and the drain of the resistor C1, the resistor C1 are further connected with the drain of the resistor C1, the drain of the resistor C36.
2. The mini negative control positive circuit of claim 1, wherein: one end of the capacitor C4, which is far away from the ground, is also connected with a resistor R4, and the other end of the resistor R4 is connected with a pin J2.
3. The mini negative control positive circuit of claim 1, wherein: and a power supply VCC is connected between the pin J3 and the resistor R2.
4. The mini negative control positive circuit of claim 3, wherein: one end of the capacitor C5 far away from the ground is also connected with one end of the resistor R2 far away from the power supply VCC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400458.7U CN211127549U (en) | 2019-12-27 | 2019-12-27 | Mini negative control positive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400458.7U CN211127549U (en) | 2019-12-27 | 2019-12-27 | Mini negative control positive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127549U true CN211127549U (en) | 2020-07-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922400458.7U Active CN211127549U (en) | 2019-12-27 | 2019-12-27 | Mini negative control positive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127549U (en) |
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2019
- 2019-12-27 CN CN201922400458.7U patent/CN211127549U/en active Active
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