CN203504435U - Alternating current converter/direct current converter of integration power supply - Google Patents
Alternating current converter/direct current converter of integration power supply Download PDFInfo
- Publication number
- CN203504435U CN203504435U CN201320689574.5U CN201320689574U CN203504435U CN 203504435 U CN203504435 U CN 203504435U CN 201320689574 U CN201320689574 U CN 201320689574U CN 203504435 U CN203504435 U CN 203504435U
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- resistance
- amplifier
- power supply
- diode
- current converter
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Abstract
The utility model discloses an alternating current converter/direct current converter of integration power supply, which comprises a multimeter, an AC ammeter, a first amplifier, a second amplifier, a third amplifier, a fourth amplifier, a first diode, a second diode, a capacitance, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and a potentiometer. The alternating current converter/direct current converter of integration power supply has stable output ripple, the stability is good, the transition precision is high, the structure is simple, and the cost is low.
Description
Technical field
The utility model relates to a kind of integrated power supply, relates in particular to a kind of AC and DC transducer of integrated power supply.
Background technology
The conversion of AC and DC has the methods such as thermoelectric (al) inversion, electronic system, static system, Department of Electronics.Wherein thermoelectric (al) inversion is still a kind of AC-DC conversion method that error is little, highly sensitive, have better stability.The analog to digital converter that development in recent years is got up and sampling and data processing technique, also can see a kind of AC-DC conversion method as, although accuracy is at present also less than thermoelectricity conversion, obtained a lot of practical applications.When analog to digital converter is during to AC signal sampled measurements, what obtain is the instantaneous value of AC signal, then according to the definition of of ac, by calculating, obtains as characteristic quantities such as effective value, mean values.Due to analog to digital converter, generally take DC reference voltage (zener) is transfer standard, and therefore in fact this is also a kind of AC-DC conversion.The AC and DC transducer of integrated power supply adopts analog-to-digital conversion mostly at present, but conversion accuracy is still lower, complex structure, less stable.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem a kind of AC and DC transducer of simple integrated power supply.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises universal meter, alternating current ammeter, the first amplifier, the second amplifier, the 3rd amplifier, the 4th amplifier, the first diode, the second diode, electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and potentiometer, the input of described alternating current ammeter, the electrode input end of described the first amplifier, the electrode input end of described the second amplifier, the equal ground connection of first end of the electrode input end of described the 3rd amplifier and described the 7th resistance, the cathode power supply end of described the first amplifier is connected with the positive pole of power supply, the negative electricity source of described the first amplifier is connected with the negative pole of described power supply, the output of described alternating current ammeter is connected with the negative input of described the first amplifier with the first end of described the first resistance simultaneously, the second end while of described the first resistance and the output of described the first amplifier, the first end of described the second resistance is connected with the first end of described the 3rd resistance, the second end while of described the 3rd resistance and the first end of described the 4th resistance, the negative pole of described the second diode is connected with the negative input of described the second amplifier, the second end of described the 4th resistance is connected with the positive pole of described the first diode with the first end of described the 5th resistance simultaneously, the negative pole of described the first diode is connected with the output of described the second amplifier with the positive pole of described the second diode simultaneously, the second end while of described the 5th resistance and the second end of described the second resistance, the first end of described electric capacity, the first end of described the 6th resistance is connected with the negative input of described the 3rd amplifier, and the second end of described the 6th resistance is connected with the first end of described potentiometer, the second end while of described electric capacity and the sliding end of described potentiometer, the second end of described potentiometer, the output of described the 3rd amplifier is connected with the electrode input end of described the 4th amplifier, the negative input of described the 4th amplifier is connected with the second end of described the 7th resistance and the cathode output end of described universal meter simultaneously, and described the 4th output of amplifier and the electrode input end of described universal meter are connected.
Further, described power supply is 12V power supply.
The beneficial effects of the utility model are:
The utility model has stable output ripple, and stability is better, and conversion accuracy is higher, simple in structure, with low cost.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model comprises universal meter G, alternating current Table A, the first amplifier U1, the second amplifier U2, the 3rd amplifier U3, the 4th amplifier U4, the first diode D1, the second diode D2, capacitor C, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7 and potentiometer RP, the input of alternating current Table A, the electrode input end of the first amplifier U1, the electrode input end of the second amplifier U2, the equal ground connection of first end of the electrode input end of the 3rd amplifier U3 and the 7th resistance R 7, the cathode power supply end of the first amplifier U1 is connected with the positive pole of 12V power supply, the negative electricity source of the first amplifier U1 is connected with the negative pole of described 12V power supply, the output of alternating current Table A is connected with the negative input of the first amplifier U1 with the first end of the first resistance R 1 simultaneously, the second end while of the first resistance R 1 and the output of the first amplifier U1, the first end of the second resistance R 2 is connected with the first end of the 3rd resistance R 3, the second end while of the 3rd resistance R 3 and the first end of the 4th resistance R 4, the negative pole of the second diode D2 is connected with the negative input of the second amplifier U2, the second end of the 4th resistance R 4 is connected with the positive pole of the first diode D1 with the first end of the 5th resistance R 5 simultaneously, the negative pole of the first diode D1 is connected with the output of the second amplifier U2 with the positive pole of the second diode D2 simultaneously, the second end while of the 5th resistance R 5 and the second end of the second resistance R 2, the first end of capacitor C, the first end of the 6th resistance R 6 is connected with the negative input of the 3rd amplifier U3, and the second end of the 6th resistance R 6 is connected with the first end of potentiometer RP, the second end while of capacitor C and the sliding end of potentiometer RP, the second end of potentiometer RP, the output of the 3rd amplifier U3 is connected with the electrode input end of the 4th amplifier U4, the negative input of the 4th amplifier U4 is connected with the cathode output end of universal meter G with the second end of the 7th resistance R 7 simultaneously, and the output of the 4th amplifier U4 is connected with the electrode input end of universal meter G.
The utility model is the potentiometer that utilizes 50k Ω, and gain is adjusted into 1.11V/V.Electric capacity provides the cut-off frequency f=1/2 π low-pass filtering of RC, and in formula, R is the clean resistance of the potentiometer RP that is in parallel with capacitor C, i.e. 1.11 * 200=222 kilo-ohm, therefore, f=0.717 hertz, capacitor C is must be enough large, just can make residue output ripple after processing within the limits prescribed.This requires f must be less than minimum operating frequency f1.Because frequency has increased twice, so the size of capacitor C is C > > 1/4 π R7f1, on the right of capacitor C should exceed, the multiple of item at least equals to export the inverse of the ripple error in decimal of allowing.For example, when ripple error is 1%, capacitor C must be 1/0.01=100 times of the right item.For this error is remained to end low side frequently always, i.e. f=20 hertz, circuit requirement capacitor C=100/ shown in Fig. 1 (4 π * 222 * 1000 * 20)=1.8 microfarads.Here the capacitor C of our available 500 nanofarads, in order to improve the stabilized speed of waveform.
Claims (2)
1. the friendship of an integrated power supply, direct current transducer, is characterized in that: comprise universal meter, alternating current ammeter, the first amplifier, the second amplifier, the 3rd amplifier, the 4th amplifier, the first diode, the second diode, electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and potentiometer, the input of described alternating current ammeter, the electrode input end of described the first amplifier, the electrode input end of described the second amplifier, the equal ground connection of first end of the electrode input end of described the 3rd amplifier and described the 7th resistance, the cathode power supply end of described the first amplifier is connected with the positive pole of power supply, the negative electricity source of described the first amplifier is connected with the negative pole of described power supply, the output of described alternating current ammeter is connected with the negative input of described the first amplifier with the first end of described the first resistance simultaneously, the second end while of described the first resistance and the output of described the first amplifier, the first end of described the second resistance is connected with the first end of described the 3rd resistance, the second end while of described the 3rd resistance and the first end of described the 4th resistance, the negative pole of described the second diode is connected with the negative input of described the second amplifier, the second end of described the 4th resistance is connected with the positive pole of described the first diode with the first end of described the 5th resistance simultaneously, the negative pole of described the first diode is connected with the output of described the second amplifier with the positive pole of described the second diode simultaneously, the second end while of described the 5th resistance and the second end of described the second resistance, the first end of described electric capacity, the first end of described the 6th resistance is connected with the negative input of described the 3rd amplifier, and the second end of described the 6th resistance is connected with the first end of described potentiometer, the second end while of described electric capacity and the sliding end of described potentiometer, the second end of described potentiometer, the output of described the 3rd amplifier is connected with the electrode input end of described the 4th amplifier, the negative input of described the 4th amplifier is connected with the second end of described the 7th resistance and the cathode output end of described universal meter simultaneously, and described the 4th output of amplifier and the electrode input end of described universal meter are connected.
2. the AC and DC transducer of integrated power supply according to claim 1, is characterized in that: described power supply is 12V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689574.5U CN203504435U (en) | 2013-11-04 | 2013-11-04 | Alternating current converter/direct current converter of integration power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689574.5U CN203504435U (en) | 2013-11-04 | 2013-11-04 | Alternating current converter/direct current converter of integration power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504435U true CN203504435U (en) | 2014-03-26 |
Family
ID=50335376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689574.5U Expired - Fee Related CN203504435U (en) | 2013-11-04 | 2013-11-04 | Alternating current converter/direct current converter of integration power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504435U (en) |
-
2013
- 2013-11-04 CN CN201320689574.5U patent/CN203504435U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |