CN203965851U - Utilize the circuit of one-chip machine port output analog voltage - Google Patents
Utilize the circuit of one-chip machine port output analog voltage Download PDFInfo
- Publication number
- CN203965851U CN203965851U CN201420264733.1U CN201420264733U CN203965851U CN 203965851 U CN203965851 U CN 203965851U CN 201420264733 U CN201420264733 U CN 201420264733U CN 203965851 U CN203965851 U CN 203965851U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip microcomputer
- circuit
- analog voltage
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of circuit that utilizes one-chip machine port output analog voltage, comprise single-chip microcomputer, one end of the first port contact resistance R1 of described single-chip microcomputer, one end of the second port contact resistance R2 of described single-chip microcomputer, one end of the 3rd port contact resistance R3 of described single-chip microcomputer, one end of the 4th port contact resistance R4 of described single-chip microcomputer, described resistance R 1, resistance R 2, the other end of resistance R 3 and resistance R 4 is connected to a voltage output jointly, the resistance value of described resistance R 1 is 2 times of resistance R 2, the resistance value of described resistance R 2 is 2 times of resistance R 3, the resistance value of described resistance R 3 is 2 times of resistance R 4.The utility model utilizes multiple ports of single-chip microcomputer, produces different analog voltages, thereby makes the cost that circuit is simple, reduced product.
Description
Technical field
The utility model relates to control circuit, especially relates to a kind of multiple ports that utilize single-chip microcomputer, produces the circuit of different analog voltages.
Background technology
Control panel is one of core component of various household electrical appliance, most of specific formula function is all to lean on these parts to realize, in control circuit, the needed voltage of various electronic devices and components is different sometimes, generally all will increase in addition transforming circuit powers, so just increased the complicacy of circuit, the reliability of the circuit further reducing, has also increased cost simultaneously.
Summary of the invention
For overcoming existing shortcoming, the utility model object is to provide a kind of multiple ports that utilize single-chip microcomputer, produces the circuit of different analog voltages.
The utility model is realized by following technical measures, a kind of circuit that utilizes one-chip machine port output analog voltage, comprise single-chip microcomputer, one end of the first port contact resistance R1 of described single-chip microcomputer, one end of the second port contact resistance R2 of described single-chip microcomputer, one end of the 3rd port contact resistance R3 of described single-chip microcomputer, one end of the 4th port contact resistance R4 of described single-chip microcomputer, described resistance R 1, resistance R 2, the other end of resistance R 3 and resistance R 4 is connected to a voltage output jointly, the resistance value of described resistance R 1 is 2 times of resistance R 2, the resistance value of described resistance R 2 is 2 times of resistance R 3, the resistance value of described resistance R 3 is 2 times of resistance R 4.
As a kind of optimal way, the resistance value of described resistance R 1 is 8.06K, and the resistance value of described resistance R 2 is 4.02K, and the resistance value of described resistance R 3 is 2K, and the resistance value of described resistance R 1 is 1K.
In the utility model, because four ports are connected to a delivery outlet after connecting into respectively the resistance that how much multiples increase again simultaneously, make like this varying level of different port to go out 16 analog voltages that increase successively in delivery outlet combination results.Thereby make the cost that circuit is simple, reduced product
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
A kind of circuit 100 that utilizes one-chip machine port output analog voltage, with reference to figure 1, comprise single-chip microcomputer, one end of the first port contact resistance R1 of described single-chip microcomputer, one end of the second port contact resistance R2 of described single-chip microcomputer, one end of the 3rd port contact resistance R3 of described single-chip microcomputer, one end of the 4th port contact resistance R4 of described single-chip microcomputer, described resistance R 1, resistance R 2, the other end of resistance R 3 and resistance R 4 is connected to a delivery outlet jointly, the resistance value of described resistance R 1 is 2 times of resistance R 2, the resistance value of described resistance R 2 is 2 times of resistance R 3, the resistance value of described resistance R 3 is 2 times of resistance R 4.
In this circuit, because four ports are connected to a delivery outlet after connecting into respectively the resistance that how much multiples increase again simultaneously, make like this varying level of different port to go out 16 analog voltages that increase successively in delivery outlet combination results, as adopted more port, can produce more magnitude of voltage simultaneously.
The circuit that utilizes one-chip machine port output analog voltage of the present embodiment, please refer to Fig. 1, specifically can also be specifically on the basis of previous technique scheme, the resistance value of resistance R 1 is 8.06K, the resistance value of described resistance R 2 is 4.02K, the resistance value of described resistance R 3 is 2K, and the resistance value of described resistance R 1 is 1K.The analog voltage that the different output levels of 12 each ports that table 1 produces for the present embodiment produce.
Table 1
| BCD output | The analog voltage producing | BCD output | The analog voltage producing |
| 0000 | 0*VDD | 0110 | 0.400*VDD |
| 0001 | 0.066*VDD | 0111 | 0.466*VDD |
| 0010 | 0.133*VDD | 1000 | 0.534*VDD |
| 0011 | 0.199*VDD | 1001 | 0.600*VDD |
| 0100 | 0.267*VDD | 1010 | 0.667*VDD |
| 0101 | 0.333*VDD | 1011 | 0.733*VDD |
More than to utilize the circuit of one-chip machine port output analog voltage to set forth to the utility model; be used for helping to understand the utility model; but embodiment of the present utility model is not restricted to the described embodiments; anyly do not deviate from the change done under the utility model principle, modification, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (2)
1. one kind is utilized the circuit of one-chip machine port output analog voltage, it is characterized in that: comprise single-chip microcomputer, one end of the first port contact resistance R1 of described single-chip microcomputer, one end of the second port contact resistance R2 of described single-chip microcomputer, one end of the 3rd port contact resistance R3 of described single-chip microcomputer, one end of the 4th port contact resistance R4 of described single-chip microcomputer, described resistance R 1, resistance R 2, the other end of resistance R 3 and resistance R 4 is connected to a voltage output jointly, the resistance value of described resistance R 1 is 2 times of resistance R 2, the resistance value of described resistance R 2 is 2 times of resistance R 3, the resistance value of described resistance R 3 is 2 times of resistance R 4.
2. utilize according to claim 1 the circuit of one-chip machine port output analog voltage, it is characterized in that: the resistance value of described resistance R 1 is 8.06K, the resistance value of described resistance R 2 is 4.02K, and the resistance value of described resistance R 3 is 2K, and the resistance value of described resistance R 1 is 1K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264733.1U CN203965851U (en) | 2014-05-22 | 2014-05-22 | Utilize the circuit of one-chip machine port output analog voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264733.1U CN203965851U (en) | 2014-05-22 | 2014-05-22 | Utilize the circuit of one-chip machine port output analog voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965851U true CN203965851U (en) | 2014-11-26 |
Family
ID=51926410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264733.1U Active CN203965851U (en) | 2014-05-22 | 2014-05-22 | Utilize the circuit of one-chip machine port output analog voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370482A (en) * | 2017-06-06 | 2017-11-21 | 深圳达人高科电子有限公司 | One kind clicks button low-voltage control circuit module |
-
2014
- 2014-05-22 CN CN201420264733.1U patent/CN203965851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370482A (en) * | 2017-06-06 | 2017-11-21 | 深圳达人高科电子有限公司 | One kind clicks button low-voltage control circuit module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203965851U (en) | Utilize the circuit of one-chip machine port output analog voltage | |
| CN105652994A (en) | Voltage switching device | |
| CN103546138A (en) | Touch key control circuit | |
| CN203773393U (en) | Negative-voltage constant current source circuit | |
| CN203706007U (en) | Ethernet switch voltage stabilizing circuit | |
| CN204231324U (en) | A kind of level conversion wire harness | |
| CN204967620U (en) | Be used for IGBT driven power supply circuit | |
| CN103729005A (en) | Negative voltage regulating circuit | |
| CN102957421A (en) | Frequency generator circuit without changes along with voltage | |
| CN204089767U (en) | Level match module and electronic product | |
| CN203504408U (en) | Voltage-reduction anti-interference circuit and circuit board | |
| CN202975965U (en) | Direct current voltage converting circuit | |
| CN204517581U (en) | Automobile wiper motor anti-jamming circuit | |
| CN204334536U (en) | A kind of level-conversion circuit | |
| CN104639128A (en) | Anti-interference timing switch circuit | |
| CN203661017U (en) | Comparator realization circuit | |
| CN203301440U (en) | Single-double-conversion duty cycle-adjustable circuit | |
| CN202737733U (en) | Output power supply circuit having short circuit protection function | |
| CN202662265U (en) | Liquid crystal display chip and display device | |
| CN202815648U (en) | Ultra low voltage difference linear voltage-stabilized power supply | |
| CN107610667B (en) | LCD driving circuit | |
| CN203287810U (en) | Serial-connection negative feedback voltage stabilizing power circuit | |
| CN203027140U (en) | Interference-resisting regulated power supply | |
| CN103887783A (en) | Overvoltage protection circuit | |
| CN202797928U (en) | Overcurrent protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518132 Guangdong province Shenzhen Guangming New District Gongming Street office Yu Tong Tian Liao community with the concept of road nineteen, road 10, Jiuzhou Industrial Park Building 1, floor 802 Patentee after: Shenzhen Fei Rui Polytron Technologies Inc Address before: 518000 Guangdong city of Shenzhen province Baoan District Shiyan town Tangtou village Longma industrial city A1 Building 5 floor Patentee before: SHENZHEN F&R ELECTRONICS TECHNOLOGY CO., LTD. |