CN219554163U - Driving circuit - Google Patents
Driving circuit Download PDFInfo
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- CN219554163U CN219554163U CN202321059960.6U CN202321059960U CN219554163U CN 219554163 U CN219554163 U CN 219554163U CN 202321059960 U CN202321059960 U CN 202321059960U CN 219554163 U CN219554163 U CN 219554163U
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- resistor
- frequency triode
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- electrically connected
- frequency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses a driving circuit, which comprises: the high-frequency power supply comprises a first high-frequency triode, a second high-frequency triode and a first resistor, wherein a first voltage is arranged between a collector electrode and a base electrode of the first high-frequency triode, a second voltage is arranged between an emitting electrode and the base electrode of the first high-frequency triode, and the emitting electrode of the first high-frequency triode is electrically connected with the emitting electrode of the second high-frequency triode; one end of the first resistor is connected with the collector electrode of the second high-frequency triode in series, a third voltage is arranged between the other end of the first resistor and the base electrode of the second high-frequency triode, and a fourth voltage is arranged between the emitter electrode of the second high-frequency triode and the base electrode of the second high-frequency triode. According to the driving circuit, the circuit with the driving function is built through the circuit device, unnecessary functions in the driving chip are removed, the driving circuit is greatly simplified while the use requirement is met, and the cost is reduced.
Description
Technical Field
The utility model relates to the technical field of signal replacement, in particular to a driving circuit.
Background
The laser driver is a driving device for controlling the semiconductor laser, and the laser driver in the prior art is an integrated chip package, so that the cost of the chip is high, the corresponding external circuit is required to be matched, and the use is complicated.
Disclosure of Invention
The utility model aims to realize the function of low-rate signal conversion by using a simplified driving circuit.
In order to achieve the above object, an aspect of the present utility model provides a driving circuit including: the high-frequency power supply comprises a first high-frequency triode, a second high-frequency triode and a first resistor, wherein a first voltage is arranged between a collector electrode and a base electrode of the first high-frequency triode, a second voltage is arranged between an emitting electrode and the base electrode of the first high-frequency triode, and the emitting electrode of the first high-frequency triode is electrically connected with the emitting electrode of the second high-frequency triode; one end of the first resistor is connected in series with a collector electrode of the second high-frequency triode, a third voltage is arranged between the other end of the first resistor and a base electrode of the second high-frequency triode, and a fourth voltage is arranged between an emitter electrode and the base electrode of the second high-frequency triode; when the high-frequency triode works, the base electrode of the first high-frequency triode is connected with a first signal line of the differential signal, and the base electrode of the second high-frequency triode is connected with a second signal line of the differential signal; one end of the driven load is electrically connected with the other end of the first resistor, and the other end of the load is electrically connected with one end of the first resistor.
Optionally, the driving circuit further includes a second resistor, a third resistor, a fourth resistor and a fifth resistor, wherein one end of the second resistor is electrically connected with the power supply and the collector of the first high-frequency triode, the other end of the second resistor is electrically connected with the base of the first high-frequency triode, one end of the third resistor is electrically connected with the second resistor, and the other end of the third resistor is electrically connected with the emitter of the first high-frequency triode; one end of the fourth resistor is electrically connected with the power supply and the other end of the first resistor, the other end of the fourth resistor is electrically connected with the base electrode of the second high-frequency triode, one end of the fifth resistor is electrically connected with the other end of the fourth resistor, and the other end of the fifth resistor is electrically connected with the emitter electrode of the second high-frequency triode; the voltage at two ends of the second resistor is the first voltage, the voltage at two ends of the third resistor is the second voltage, the voltage at two ends of the fourth resistor is the third voltage, and the voltage at two ends of the fifth resistor is the fourth voltage.
Optionally, the driving circuit further includes a sixth resistor, one end of the sixth resistor is electrically connected to the emitter of the first high-frequency triode and the emitter of the second high-frequency triode, and the other end of the sixth resistor is grounded and is electrically connected to the other end of the third resistor and the other end of the fifth resistor.
Optionally, the driving circuit further includes a seventh resistor, and when in operation, one end of the seventh resistor is electrically connected to the other end of the driven load, and the other end of the seventh resistor is grounded.
Optionally, the driving circuit further includes an NTC thermistor connected in parallel with the seventh resistor.
Optionally, the driving circuit further includes a capacitor, wherein one end of the capacitor is electrically connected to the power supply, and the other end of the capacitor is grounded.
According to the driving circuit, the circuit with the driving function is built through the circuit device, unnecessary functions in the driving chip are removed, the driving circuit is greatly simplified while the use requirement is met, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a driving circuit according to the present utility model;
FIG. 2 is a schematic diagram of a driving circuit according to the present utility model;
fig. 3 is a schematic diagram of a driving circuit according to the present utility model.
Detailed Description
The utility model will now be described in detail with reference to the drawings and the accompanying specific examples.
In the prior art, the driving circuit is realized by an integrated chip, so that the difficulty of the design of the driving circuit is reduced, the functions of a plurality of external circuits are all integrated on the driving chip, and when the driving circuit is used, an external power supply is required to be added to the driving chip, the pins of the chip are processed to meet the use requirement, and for a product which only needs low-speed driving, for example, an optical module of 0-622M is required, the use difficulty is increased, and the use cost is increased.
According to the driving circuit, the circuit with the driving function is built through the circuit device, unnecessary functions in the driving chip are removed, the driving circuit is greatly simplified while the use requirement is met, and the cost is reduced.
Fig. 1 shows a schematic diagram of a driving circuit, and the driving circuit shown in fig. 1 includes: a first high frequency transistor U1, a second high frequency transistor U2, and a first resistor R1, wherein,
a first voltage is set between the collector and the base of the first high-frequency triode U1, a second voltage is set between the emitter and the base of the first high-frequency triode U2, in this embodiment of the present utility model, the voltage provided by the power supply V1 is the first voltage, and the voltage provided by the power supply V2 is the second voltage.
One end of the first resistor R1 is connected in series with a collector of the second high-frequency triode U2, a third voltage is arranged between the other end of the first resistor R1 and a base of the second high-frequency triode U2, a fourth voltage is arranged between an emitter and the base of the second high-frequency triode U2, one end of the load D1 is electrically connected with the other end of the first resistor R1, the other end of the load D1 is electrically connected with one end of the first resistor R1, and when the load D1 works, the load is conducted only when current exists from one end to the other end of the load D1, wherein the voltage provided by the power supply V3 is the third voltage, and the voltage provided by the power supply V4 is the fourth voltage;
the emitter of the first high-frequency triode U1 is electrically connected with the emitter of the second high-frequency triode U2;
in operation, the base of the first high frequency transistor U1 is connected to the first signal line td+ of the differential signal, and the base of the second high frequency transistor U2 is connected to the second signal line TD-of the differential signal.
The driving circuit is a differential signal driving circuit, and can control the turn-off of the first high-frequency triode U1 and the second high-frequency triode U2 according to the change of the differential signal level to control the luminous intensity of the laser, so that the signal modulation of the laser is realized, the driving circuit is greatly simplified, and the cost is reduced.
Fig. 2 shows a driving circuit, which further comprises a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5, wherein,
one end of the second resistor R2 is electrically connected with the power supply VCC and the collector electrode of the first high-frequency triode U1, the other end of the second resistor R2 is electrically connected with the base electrode of the first high-frequency triode U1, one end of the third resistor R3 is electrically connected with the second resistor R2, the other end of the third resistor R3 is electrically connected with the emitter electrode U1 of the first high-frequency triode, wherein, in operation, the voltage at two ends of the second resistor R2 is the first voltage, and the voltage at two ends of the third resistor R3 is the second voltage.
One end of a fourth resistor R4 is electrically connected with a power supply VCC and the other end of the first resistor R1, the other end of the fourth resistor R4 is electrically connected with the base electrode of the second high-frequency triode U2, one end of a fifth resistor R5 is electrically connected with the other end of the fourth resistor R4, and the other end of the fifth resistor R5 is electrically connected with the emitter electrode of the second high-frequency triode U2;
the voltages at two ends of the second resistor R2 are the first voltage, the voltages at two ends of the third resistor R3 are the second voltage, the voltages at two ends of the fourth resistor R4 are the third voltage, and the voltages at two ends of the fifth resistor R5 are the fourth voltage.
In operation, the base of the first high-frequency triode U1 is connected with a first signal line TD+ of the differential signal, and the base of the second high-frequency triode U2 is connected with a second signal line TD-of the differential signal.
In the embodiment shown in fig. 2, the driving circuit further includes a sixth resistor R6, one end of the sixth resistor R6 is electrically connected to the emitter of the first high-frequency transistor U1 and the emitter of the second high-frequency transistor U2, and the other end of the sixth resistor R6 is grounded and is electrically connected to the other end of the third resistor R3 and the other end of the fifth resistor R5, in this embodiment of the present utility model.
In the embodiment shown in fig. 2, the driving circuit further includes a capacitor C1, where one end of the capacitor C1 is electrically connected to the power supply VCC, and the other end is grounded.
Fig. 3 shows a driving circuit, and the driving circuit shown in fig. 2 further includes a seventh resistor R7, wherein one end of the seventh resistor R7 is electrically connected to the other end of the load D1, and the other end of the seventh resistor R7 is grounded.
The driving circuit as shown in fig. 2 further includes an NTC (Negative Temperature Coefficient ) thermistor L1 connected in parallel with the seventh resistor R7.
In the driving circuit, the fifth resistor R5 can be regulated to realize the enlargement and reduction of the modulation current, the seventh resistor R7 can be regulated to realize the intensity of laser light emission, the NTC thermistor L1 can be used for realizing the automatic regulation function of laser power, the bias current is increased when the high temperature resistance of the L1 is reduced, and the bias current is reduced when the low temperature resistance is reduced, so that the ohmic characteristics of the laser, which just correspond to the high temperature and the low temperature, are reversely compensated, the requirement of performance indexes can be met no matter the laser is used at the high temperature or the low temperature, and the conversion from differential signals to optical signals 0 and 1 is completed, thereby realizing the signal transmission.
The foregoing has been described schematically the utility model and embodiments thereof, which are not limiting, but are capable of other specific forms of implementing the utility model without departing from its spirit or essential characteristics. The drawings are also intended to depict only one embodiment of the utility model, and therefore the actual construction is not intended to limit the claims, any reference number in the claims not being intended to limit the claims. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively designed without departing from the gist of the present utility model, and all the structural manners and the embodiment are considered to be within the protection scope of the present patent. In addition, the term "comprising" does not exclude other elements, and the term "a" or "an" preceding an element does not exclude the inclusion of a plurality of such elements. The various elements recited in the product claims may also be embodied in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.
Claims (6)
1. A driving circuit, characterized by comprising: the first high-frequency triode, the second high-frequency triode and the first resistor, wherein,
a first voltage is arranged between the collector electrode and the base electrode of the first high-frequency triode, a second voltage is arranged between the emitter electrode and the base electrode of the first high-frequency triode, and the emitter electrode of the first high-frequency triode is electrically connected with the emitter electrode of the second high-frequency triode;
one end of the first resistor is connected in series with a collector electrode of the second high-frequency triode, a third voltage is arranged between the other end of the first resistor and a base electrode of the second high-frequency triode, and a fourth voltage is arranged between an emitter electrode and the base electrode of the second high-frequency triode;
when the high-frequency triode works, the base electrode of the first high-frequency triode is connected with a first signal line of the differential signal, and the base electrode of the second high-frequency triode is connected with a second signal line of the differential signal;
one end of the driven load is electrically connected with the other end of the first resistor, and the other end of the load is electrically connected with one end of the first resistor.
2. The driving circuit as recited in claim 1, further comprising a second resistor, a third resistor, a fourth resistor, and a fifth resistor, wherein
One end of the second resistor is electrically connected with a power supply and a collector electrode of the first high-frequency triode, the other end of the second resistor is electrically connected with a base electrode of the first high-frequency triode, one end of the third resistor is electrically connected with the second resistor, and the third resistor is electrically connected with an emitter electrode of the first high-frequency triode;
one end of the fourth resistor is electrically connected with the power supply and the other end of the first resistor, the other end of the fourth resistor is electrically connected with the base electrode of the second high-frequency triode, one end of the fifth resistor is electrically connected with the other end of the fourth resistor, and the other end of the fifth resistor is electrically connected with the emitter electrode of the second high-frequency triode; the voltage at two ends of the second resistor is the first voltage, the voltage at two ends of the third resistor is the second voltage, the voltage at two ends of the fourth resistor is the third voltage, and the voltage at two ends of the fifth resistor is the fourth voltage.
3. The driving circuit according to claim 2, further comprising a sixth resistor, wherein one end of the sixth resistor is electrically connected to the emitter of the first high-frequency transistor and the emitter of the second high-frequency transistor, and the other end of the sixth resistor is grounded and is electrically connected to the other end of the third resistor and the other end of the fifth resistor.
4. A driving circuit according to claim 2, further comprising a seventh resistor, one end of the seventh resistor being electrically connected to the other end of the load to be driven, the other end of the seventh resistor being grounded.
5. The drive circuit of claim 4, further comprising an NTC thermistor in parallel with the seventh resistor.
6. A driving circuit according to claim 2, further comprising a capacitor electrically connected at one end to a power supply and at one end to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059960.6U CN219554163U (en) | 2023-05-06 | 2023-05-06 | Driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059960.6U CN219554163U (en) | 2023-05-06 | 2023-05-06 | Driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219554163U true CN219554163U (en) | 2023-08-18 |
Family
ID=87700338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321059960.6U Active CN219554163U (en) | 2023-05-06 | 2023-05-06 | Driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219554163U (en) |
-
2023
- 2023-05-06 CN CN202321059960.6U patent/CN219554163U/en active Active
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