CN203233376U - Pulse amplifying circuit - Google Patents
Pulse amplifying circuit Download PDFInfo
- Publication number
- CN203233376U CN203233376U CN 201320196159 CN201320196159U CN203233376U CN 203233376 U CN203233376 U CN 203233376U CN 201320196159 CN201320196159 CN 201320196159 CN 201320196159 U CN201320196159 U CN 201320196159U CN 203233376 U CN203233376 U CN 203233376U
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- Prior art keywords
- resistance
- diode
- amplifying circuit
- transformer
- amplifier
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Abstract
The utility model discloses a pulse amplifying circuit comprising a coupling circuit and an amplifying circuit. The coupling circuit comprises a photoelectric coupler, an amplifier and a first resistor. A first terminal of the first resistor is a first voltage input terminal; a second terminal of the first resistor is connected with a first terminal of the photoelectric coupler; a signal input terminal of the amplifier is connected with an external circuit, a signal output terminal of the amplifier is connected with a second terminal of the photoelectric coupler and the amplifier comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, an integrated circuit, a light-emitting diode, a triode and a transformer. The pulse amplifying circuit is simple in structure and low in cost, is capable of amplifying faint narrow pulse signals, and is provided with a wide linear input range and the worthy of popularization.
Description
Technical field
The utility model relates to a kind of signal amplification circuit, relates in particular to a kind of pulse amplifying circuit.
Background technology
When optical signal power hour, the signal of telecommunication output of photodetector output is also smaller, sometimes even very faint, only be the burst pulse of ns magnitude, high-speed AD also is difficult to capture the amplitude of burst pulse, so will amplify processing to it.For the needs that signal is handled, generally to follow the preceding pulse amplifier, except will reasonably selecting each parameter of photodiode, Design of Amplifier also is the key factor that influences detector performance.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of simple in structure, cost is low, the pulse amplifying circuit that can amplify faint narrow pulse signal.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of pulse amplifying circuit, comprise coupling circuit and amplifying circuit, described coupling circuit comprises photoelectrical coupler, amplifier and first resistance, first end of described first resistance is first voltage input end, second end of described first resistance is connected with first end of described photoelectrical coupler, the signal input part of described amplifier is connected with external circuits, and the signal output part of described amplifier is connected with second end of described photoelectrical coupler.
Particularly, described amplifying circuit comprises second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first diode, second diode, integrated circuit, light-emitting diode, triode and transformer, first end of described second resistance is connected with the 3rd end of described photoelectrical coupler and the signal input part of described integrated circuit respectively, the earth terminal of described integrated circuit respectively with the 4th end of described photoelectrical coupler, the positive pole of described first diode is connected back ground connection with the emitter of described triode, the signal output part of described integrated circuit is connected with first end of described the 3rd resistance and first end of described the 5th resistance respectively, second end of described the 5th resistance is connected with the base stage of described triode, second end of described second resistance is second voltage input end, second end of described second resistance respectively with second end of described the 3rd resistance, first end of a winding of the negative pole of described light-emitting diode and described transformer is connected, second end of a winding of described transformer respectively with first end of described the 4th resistance, the collector electrode of described triode is connected with the negative pole of described first diode, second end of described the 4th resistance is connected with the positive pole of described light-emitting diode, first end of the secondary winding of described transformer is connected with the positive pole of described second diode, and second end of the negative pole of described second diode and the secondary winding of described transformer is connected with external circuits respectively.
The beneficial effects of the utility model are:
The utility model pulse amplifying circuit simple in structure, cost is low, can faint narrow pulse signal be amplified, and has the favorable linearity input range.
Description of drawings
Fig. 1 is the circuit diagram of a kind of pulse amplifying circuit of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of pulse amplifying circuit of the utility model, comprise coupling circuit and amplifying circuit, coupling circuit comprises photoelectrical coupler OC, amplifier IC1 and first resistance R 1, first end of first resistance R 1 is first voltage input end, second end of first resistance R 1 is connected with first end of photoelectrical coupler OC, and the signal input part of amplifier IC1 is connected with external circuits, and the signal output part of amplifier IC1 is connected with second end of photoelectrical coupler OC.
Amplifying circuit comprises second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the first diode D1, the second diode D2, integrated circuit (IC) 2, LED, triode VT and transformer T, first end of second resistance R 2 is connected with the 3rd end of photoelectrical coupler OC and the signal input part of integrated circuit (IC) 2 respectively, the earth terminal of integrated circuit (IC) 2 respectively with the 4th end of photoelectrical coupler OC, the emitter of the positive pole of the first diode D1 and triode VT is connected back ground connection, the signal output part of integrated circuit (IC) 2 is connected with first end of the 3rd resistance R 3 and first end of the 5th resistance R 5 respectively, second end of the 5th resistance R 5 is connected with the base stage of triode VT, second end of second resistance R 2 is second voltage input end, second end of second resistance R 2 respectively with second end of the 3rd resistance R 3, first end of the winding of the negative pole of LED and transformer T is connected, second end of the winding of transformer T respectively with first end of the 4th resistance R 4, the collector electrode of triode VT is connected with the negative pole of the first diode D1, second end of the 4th resistance R 4 is connected with the positive pole of LED, first end of the secondary winding of transformer T is connected with the positive pole of the second diode D2, and second end of the secondary winding of the negative pole of the second diode D2 and transformer T is connected with external circuits respectively.
Use the operation principle of a kind of pulse amplifying circuit of the utility model as follows:
Transformer T can only pass through burst pulse, so broad pulse earlier becomes the wide burst pulse of 0.2-0.4ms by coupling circuit with the rising edge of pulse, forms two burst pulses by amplifying circuit then.Can prevent wrong broad pulse or high level like this by transformer T, thereby protect transformer T.
For the base stage that prevents from disturbing and satisfy triode VT to trigger impulse power require the phase shift trigger impulse through photoelectrical coupler OC after, improve driving forces through integrated circuit (IC) 2 again, drive triode VT then, make triode VT triggering and conducting at last.
Claims (2)
1. pulse amplifying circuit, it is characterized in that: comprise coupling circuit and amplifying circuit, described coupling circuit comprises photoelectrical coupler, amplifier and first resistance, first end of described first resistance is first voltage input end, second end of described first resistance is connected with first end of described photoelectrical coupler, the signal input part of described amplifier is connected with external circuits, and the signal output part of described amplifier is connected with second end of described photoelectrical coupler.
2. according to the described a kind of pulse amplifying circuit of claim 1, it is characterized in that: described amplifying circuit comprises second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first diode, second diode, integrated circuit, light-emitting diode, triode and transformer, first end of described second resistance is connected with the 3rd end of described photoelectrical coupler and the signal input part of described integrated circuit respectively, the earth terminal of described integrated circuit respectively with the 4th end of described photoelectrical coupler, the positive pole of described first diode is connected back ground connection with the emitter of described triode, the signal output part of described integrated circuit is connected with first end of described the 3rd resistance and first end of described the 5th resistance respectively, second end of described the 5th resistance is connected with the base stage of described triode, second end of described second resistance is second voltage input end, second end of described second resistance respectively with second end of described the 3rd resistance, first end of a winding of the negative pole of described light-emitting diode and described transformer is connected, second end of a winding of described transformer respectively with first end of described the 4th resistance, the collector electrode of described triode is connected with the negative pole of described first diode, second end of described the 4th resistance is connected with the positive pole of described light-emitting diode, first end of the secondary winding of described transformer is connected with the positive pole of described second diode, and second end of the negative pole of described second diode and the secondary winding of described transformer is connected with external circuits respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196159 CN203233376U (en) | 2013-04-18 | 2013-04-18 | Pulse amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196159 CN203233376U (en) | 2013-04-18 | 2013-04-18 | Pulse amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233376U true CN203233376U (en) | 2013-10-09 |
Family
ID=49289478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320196159 Expired - Fee Related CN203233376U (en) | 2013-04-18 | 2013-04-18 | Pulse amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233376U (en) |
-
2013
- 2013-04-18 CN CN 201320196159 patent/CN203233376U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140418 |