CN2181707Y - Power supply for digital indicator of two-wire transducer - Google Patents
Power supply for digital indicator of two-wire transducer Download PDFInfo
- Publication number
- CN2181707Y CN2181707Y CN 93232637 CN93232637U CN2181707Y CN 2181707 Y CN2181707 Y CN 2181707Y CN 93232637 CN93232637 CN 93232637 CN 93232637 U CN93232637 U CN 93232637U CN 2181707 Y CN2181707 Y CN 2181707Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- power supply
- resistance
- wire system
- watch
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a power supply for the digital indicator of a two-wire transducer, belonging to the power supply device of a transducer meter, comprising a voltage booster [5], a digital meter [4] and a parallel circuit composed of three diodes. The utility model is used on the digital meter of the two-wire transducer and can provide a power supply with long-term stability.
Description
The utility model belongs to the electric supply installation of two-wire system transformer instrument.
The pointer indicating gauge of two-wire system transformer use at present is not because of directly perceived, when reading, have very mistake, often bring false judgment to testing, and after digital indicating gauge addresses this problem, because of the independent power supply of need guarantees its work, now use powered battery, the indicating gauge because of two-wire system transformer when reality is used is in running order for a long time, makes battery make power supply and just can not reach requirement fully.
The purpose of this utility model just provides a kind of power supply of using for the digital indicating gauge long-term work of two-wire system transformer.
A kind of by watch glasses ［ 1 ］, base ［ 3 ］, the two-wire system transformer numeral indicating gauge power supply that pin ［ A, D ］ wiring board constitutes is characterized in that fixed leg ［ 6,7 ］ is gone up installation voltage booster ［ 5 ］ and digital watch ［ 4 ］ on the interior base of watch glasses.Its concrete mounting means connection in series-parallel between former two-wire system transformer ［ 10 ］ and 24 volts of direct supplys ［ 11 ］ is gone into by digital watch ［ 4 ］ voltage booster ［ 5 ］ and three series diodes in parallel, this voltage booster as described in Figure 3, the concrete connecting mode of stepup transformer is emitter and the resistance R that the C inlead connects two triodes
1, the collector of two triodes is connected to the elementary winding two ends of transformer, resistance R respectively
1Other end connecting resistance R
2With the feedback winding center head of transformer, the base stage of two triodes connects the two ends of the feedback winding of transformer, D inlead and resistance R respectively
2The other end and the center contact of the elementary winding of transformer join, Secondary winding of transformer connects the electric bridge that diode constitutes, the diode two ends connect electric capacity and E, F two ends respectively.
The invention is to utilize original 24 volts of direct supplys at three diodes of its loop C, D two ends series connection, obtains the power supply that digital indicating gauge can long-term stable operation thereby obtain one 2,1 volts DC voltage stepup transformer ［ 5 ］ in series loop.
The utility model has the advantages that power supply is stable, can use for a long time for two-wire system transformer numeral indicating gauge.
Accompanying drawing 1 is a two-wire system transformer numeral indicating gauge power supply contour structures synoptic diagram, and Fig. 2 is that this power supply connects figure with the circuit of external piece, and Fig. 3 is the schematic circuit of voltage booster, Fig. 4 is the digital watch circuit theory diagrams, wherein, and the 1-watch glasses, the 2-clamp nut, 3-base, 4-digital watch, the 5-voltage booster, 6-fixed leg 1,7-fixed leg 2, the 8-installing plate, the 9-fixed head, the 10-two-wire system transformer, 11-24 lies prostrate direct supply.
Connect voltage booster and digital watch on the disk printed panel by figure during enforcement, punching fixes above-mentioned two plates on original base, connects three diodes and this two plate gets final product by circuit block-diagram.
Claims (3)
1, a kind of by watch glasses [1], base [3], the two-wire system transformer numeral indicating gauge power supply that pin [A, D] wiring board constitutes is characterized in that fixed leg [6,7] is gone up installation voltage booster [5] and digital watch [4] on the interior base of watch glasses.
2, two-wire system transformer numeral indicating gauge power supply according to claim 1 is characterized in that circuit by three diode in series shunt voltage stepup transformers ［ 5 ］, digital watch ［ 4 ］.
3, two-wire system transformer according to claim 1 and 2 numeral indicating gauge power supply is characterized in that the emitter and the resistance R that the C inlead connects two triodes that be connected to of digital watch
1, the collector of two triodes is connected to the elementary winding two ends of transformer, resistance R respectively
1Other end connecting resistance R
2With transformer feedback winding center head, two transistor bases connect the two ends of transformer feedback winding respectively, D inlead and resistance R
2The other end and the center contact of the elementary winding of transformer join, the transformer secondary output winding connects the electric bridge that diode constitutes, the diode two ends connect electric capacity and E, F two ends respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93232637 CN2181707Y (en) | 1993-12-30 | 1993-12-30 | Power supply for digital indicator of two-wire transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93232637 CN2181707Y (en) | 1993-12-30 | 1993-12-30 | Power supply for digital indicator of two-wire transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181707Y true CN2181707Y (en) | 1994-11-02 |
Family
ID=33808798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93232637 Expired - Fee Related CN2181707Y (en) | 1993-12-30 | 1993-12-30 | Power supply for digital indicator of two-wire transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181707Y (en) |
-
1993
- 1993-12-30 CN CN 93232637 patent/CN2181707Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |