CN203537365U - Level converting circuit - Google Patents
Level converting circuit Download PDFInfo
- Publication number
- CN203537365U CN203537365U CN201320664021.4U CN201320664021U CN203537365U CN 203537365 U CN203537365 U CN 203537365U CN 201320664021 U CN201320664021 U CN 201320664021U CN 203537365 U CN203537365 U CN 203537365U
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- triode
- capacitor
- diode
- resistance
- level
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- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a level converting circuit. The level converting circuit comprises a resistor R1, a resistor R2, a capacitor C1, a diode D1 and a triode Q1. The cathode of the diode D1, one end of the capacitor C1 and the base electrode of the triode Q1 are connected, and an input signal VIN is accessed; the anode of the diode D1, the other end of the capacitor C1 and the emitting electrode of the triode Q1 are grounded; the collecting electrode pin of the triode Q1 is connected with one end of a resistor R2 and accessed with an output signal VOUT; the other end of the resistor R1 is connected with an input signal power supply voltage VCCA; and the other end of the resistor R2 is connected with an output signal power supply voltage VCCB. The level converting circuit is advantageous in that: the level converting circuit can realize logic level conversion of voltage having a large level voltage difference by utilizing general discrete devices, and the scope of the voltage difference between the input voltage and the output voltage is wide; and the circuit is simple in structure and works stably and reliably.
Description
Technical field
The utility model is established and a kind of level shifting circuit.
Background technology
When logical signal is controlled, often need to change signal level, when the voltage difference of switching levels is when larger, use the more difficult translation function that realizes of general level transferring chip.
Summary of the invention
In view of the deficiency of general level transferring chip in high-voltage level conversion, the utility model circuit provides a kind of level shifting circuit that utilizes discrete device design, can make up level transferring chip deficiency in actual use.
The utility model for achieving the above object, the technical scheme of taking is: a kind of level shifting circuit, it is characterized in that: comprise resistance R 1, resistance R 2, capacitor C 1, diode D1, triode Q1, the negative pole of described diode D1, one end of capacitor C 1, one end of resistance R 1, the base stage of triode Q1 is connected and meets input signal VIN, the positive pole of diode D1, the other end of capacitor C 1, the grounded emitter of triode Q1, one end of the collector electrode pin contact resistance R2 of triode Q1 also meets output signal VOUT, the other end of resistance R 1 connects input signal supply voltage VCCA, the other end of resistance R 2 connects output signal supply voltage VCCB.
The beneficial effects of the utility model are: this level shifting circuit utilizes general discrete device can realize the logic level transition of the voltage that level voltage gap is larger, the voltage difference wide ranges of input voltage and output voltage.Circuit structure is simple, and circuit working is reliable and stable.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, a kind of level shifting circuit, comprise resistance R 1, resistance R 2, capacitor C 1, diode D1, triode Q1, the base stage of one end of one end of the negative pole of diode D1, capacitor C 1, resistance R 1, triode Q1 is connected and meets input signal VIN, the grounded emitter of the other end of the positive pole of diode D1, capacitor C 1, triode Q1, one end of the collector electrode pin contact resistance R2 of triode Q1 also meets output signal VOUT, the other end of resistance R 1 connects input signal supply voltage VCCA, and the other end of resistance R 2 connects output signal supply voltage VCCB.
When the logic level high level that is VCCA is during through oversampling circuit, circuit conversion is low level output, and when low level is during through oversampling circuit, circuit conversion is that level is the high level signal output of VCCB.Thereby the signal of realizing level and be VCCA is converted to the signal that level is VCCB.
Claims (1)
1. a level shifting circuit, it is characterized in that: comprise resistance R 1, resistance R 2, capacitor C 1, diode D1, triode Q1, the negative pole of described diode D1, one end of capacitor C 1, one end of resistance R 1, the base stage of triode Q1 is connected and meets input signal VIN, the positive pole of diode D1, the other end of capacitor C 1, the grounded emitter of triode Q1, one end of the collector electrode pin contact resistance R2 of triode Q1 also meets output signal VOUT, the other end of resistance R 1 connects input signal supply voltage VCCA, the other end of resistance R 2 connects output signal supply voltage VCCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664021.4U CN203537365U (en) | 2013-10-28 | 2013-10-28 | Level converting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664021.4U CN203537365U (en) | 2013-10-28 | 2013-10-28 | Level converting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537365U true CN203537365U (en) | 2014-04-09 |
Family
ID=50423536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664021.4U Expired - Lifetime CN203537365U (en) | 2013-10-28 | 2013-10-28 | Level converting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038208A (en) * | 2014-06-17 | 2014-09-10 | 上海华兴数字科技有限公司 | Multiplex circuit for digital signals |
| CN107707010A (en) * | 2017-09-04 | 2018-02-16 | 佛山市索尔电子实业有限公司 | A kind of photovoltaic charged circuit system |
-
2013
- 2013-10-28 CN CN201320664021.4U patent/CN203537365U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038208A (en) * | 2014-06-17 | 2014-09-10 | 上海华兴数字科技有限公司 | Multiplex circuit for digital signals |
| CN104038208B (en) * | 2014-06-17 | 2017-07-14 | 上海华兴数字科技有限公司 | A kind of data signal multiplex circuit |
| CN107707010A (en) * | 2017-09-04 | 2018-02-16 | 佛山市索尔电子实业有限公司 | A kind of photovoltaic charged circuit system |
| CN107707010B (en) * | 2017-09-04 | 2021-02-23 | 佛山市索尔电子实业有限公司 | Photovoltaic charging circuit system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |