CN212808513U - Resistance adjusting circuit - Google Patents
Resistance adjusting circuit Download PDFInfo
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- CN212808513U CN212808513U CN202021566593.5U CN202021566593U CN212808513U CN 212808513 U CN212808513 U CN 212808513U CN 202021566593 U CN202021566593 U CN 202021566593U CN 212808513 U CN212808513 U CN 212808513U
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- circuit
- resistance
- resistor
- button switch
- regulating
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Abstract
The utility model relates to the technical field of chip measurement, in particular to a resistance regulating circuit, which comprises a power supply, a voltage stabilizing circuit, a button switch circuit, a regulating resistance circuit, an input end circuit and an output end circuit, wherein the input end circuit is externally connected with a measuring instrument, the output end circuit is connected with the measuring chip, the table lookup frequency value on the measuring instrument can be changed by regulating the resistance value of the regulating resistance circuit, the table lookup frequency value is regulated to the range by rotating an adjustable resistance knob in the confirmation process, the measuring instrument can automatically display the numerical value of an application resistance after the adjustment is correct, then the resistance value of the actual regulating resistance circuit is measured by a universal meter, when the resistance values measured by the measuring instrument and the universal meter are not more than 2 percent, the measuring chip is a qualified product, otherwise, the measuring chip is an unqualified product, the utility model discloses a circuit is, so that the detection cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the chip measuring technique and specifically relates to indicate a resistance adjustment circuit.
Background
The SG series chip can test after the center frequency is measured to confirm that the resistor is applied, so the center value of the frequency needs to be measured in the measuring process, the existing testing circuit is complex, the resistor is not adjustable, and the measuring process is complex.
SUMMERY OF THE UTILITY MODEL
The utility model discloses problem to prior art provides a resistance adjustment circuit for measuring SG series chip.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a pair of resistance adjustment circuit, including power supply, voltage stabilizing circuit, button switch circuit, adjusting resistance circuit, input end circuit and output end circuit, voltage stabilizing circuit's one end with power supply electric connection, voltage stabilizing circuit's the other end with button switch circuit's one end electric connection, button switch circuit's the other end with adjusting resistance circuit's one end electric connection, adjusting resistance circuit's the other end respectively with input end circuit output end circuit electric connection.
Preferably, the input end circuit comprises a resistor R1, a resistor R2, a resistor R4 and an OSCI input port, the OSCI input port is connected to the voltage stabilizing circuit through the resistor R1 and the resistor R4, and the OSCI input port is connected to the adjusting resistor circuit through a resistor R2.
Preferably, the adjusting resistor circuit comprises a 100K Ω adjustable resistor and a 1M Ω adjustable resistor, the 100K Ω adjustable resistor is connected in series with the 1M Ω adjustable resistor, the 100K Ω adjustable resistor is electrically connected to the button switch circuit, and the 1M Ω adjustable resistor is electrically connected to the resistor R2.
Preferably, the push button switch circuit comprises a push button switch and a resistor R3, and the resistance value of the resistor R3 is 3M omega.
Preferably, the button switch is a button switch with a lock.
Preferably, the output terminal circuit is externally connected with an output interface.
Preferably, the resistance value of the resistor R4 is 1M Ω.
The utility model has the advantages that:
the utility model provides a resistance regulating circuit, including power supply, voltage stabilizing circuit, button switch circuit, adjusting resistance circuit, input end circuit and output end circuit, the one end of voltage stabilizing circuit with power supply electric connection, the other end of voltage stabilizing circuit with the one end electric connection of button switch circuit, the other end of button switch circuit with the one end electric connection of adjusting resistance circuit, the other end of adjusting resistance circuit respectively with input end circuit, output end circuit electric connection, when measuring, input end circuit external measuring apparatu, output end circuit is connected with measuring chip, through adjusting the resistance value of adjusting resistance circuit, the frequency value of looking up table on the measuring apparatu can change, will look up the frequency value to the within range through rotating adjustable resistance knob in the affirmation process, the measuring apparatu can the automatic display use the numerical value of resistance after the adjustment is correct, later measures the resistance value of actual resistance circuit through the universal meter, when measuring apparatu and universal meter measuring resistance numerical value are no longer than 2%, then measures the chip and be qualified product, otherwise, then is nonconforming product, the utility model discloses the circuit is simple, detects accurately for detection cost reduces.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is a schematic diagram of the voltage stabilizing circuit of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a resistance regulating circuit, including power supply, voltage stabilizing circuit, button switch circuit, adjusting resistance circuit, input end circuit and output end circuit, the one end of voltage stabilizing circuit with power supply electric connection, the other end of voltage stabilizing circuit with the one end electric connection of button switch circuit, the other end of button switch circuit with the one end electric connection of adjusting resistance circuit, the other end of adjusting resistance circuit respectively with input end circuit, output end circuit electric connection, when measuring, input end circuit external measuring apparatu, output end circuit is connected with measuring chip, through adjusting the resistance value of adjusting resistance circuit, the frequency value of looking up table on the measuring apparatu can change, will look up the frequency value to the within range through rotating adjustable resistance knob in the affirmation process, the measuring apparatu can the automatic display use the numerical value of resistance after the adjustment is correct, later measures the resistance value of actual resistance circuit through the universal meter, when measuring apparatu and universal meter measuring resistance numerical value are no longer than 2%, then measures the chip and be qualified product, otherwise, then is nonconforming product, the utility model discloses the circuit is simple, detects accurately for detection cost reduces.
In this embodiment, the input end circuit includes a resistor R1, a resistor R2, a resistor R4, and an OSCI input port, the OSCI input port is connected to the voltage stabilizing circuit through the resistor R1 and the resistor R4, the OSCI input port is connected to the adjusting resistor circuit through the resistor R2, the adjusting resistor circuit includes a 100K Ω adjustable resistor and a 1M Ω adjustable resistor, the 100K Ω adjustable resistor is connected in series with the 1M Ω adjustable resistor, the 100K Ω adjustable resistor is electrically connected to the button switch circuit, the 1M Ω adjustable resistor is electrically connected to the resistor R2, the button switch circuit includes a button switch and a resistor R3, the resistance of the resistor R3 is 3M Ω, and the resistance of the resistor R4 is 1M Ω
In this embodiment, the button switch is a button switch with a lock, and the button switch with the lock can prevent misoperation.
In this embodiment, the output end circuit is externally connected with an output interface, and the output interface is used for being connected with the measurement chip.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (7)
1. A resistance adjustment circuit, characterized by: the power supply comprises a power supply source, a voltage stabilizing circuit, a button switch circuit, an adjusting resistance circuit, an input end circuit and an output end circuit, wherein one end of the voltage stabilizing circuit is electrically connected with the power supply source, the other end of the voltage stabilizing circuit is electrically connected with one end of the button switch circuit, the other end of the button switch circuit is electrically connected with one end of the adjusting resistance circuit, and the other end of the adjusting resistance circuit is electrically connected with the input end circuit and the output end circuit respectively.
2. A resistance adjustment circuit according to claim 1, wherein: the input end circuit comprises a resistor R1, a resistor R2, a resistor R4 and an OSCI input port, the OSCI input port is connected with the voltage stabilizing circuit through the resistor R1 and the resistor R4, and the OSCI input port is connected with the adjusting resistor circuit through a resistor R2.
3. A resistance adjustment circuit according to claim 2, wherein: the adjustable resistance circuit comprises a 100K omega adjustable resistor and a 1M omega adjustable resistor, the 100K omega adjustable resistor is connected with the 1M omega adjustable resistor in series, the 100K omega adjustable resistor is electrically connected with the button switch circuit, and the 1M omega adjustable resistor is electrically connected with the resistor R2.
4. A resistance adjustment circuit according to claim 1, wherein: the button switch circuit comprises a button switch and a resistor R3, and the resistance value of the resistor R3 is 3M omega.
5. A resistance adjustment circuit according to claim 4, wherein: the button switch is a button switch with a lock.
6. A resistance adjustment circuit according to claim 1, wherein: the output end circuit is externally connected with an output interface.
7. A resistance adjustment circuit according to claim 2, wherein: the resistance value of the resistor R4 is 1M omega.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021566593.5U CN212808513U (en) | 2020-07-31 | 2020-07-31 | Resistance adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021566593.5U CN212808513U (en) | 2020-07-31 | 2020-07-31 | Resistance adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212808513U true CN212808513U (en) | 2021-03-26 |
Family
ID=75106880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021566593.5U Active CN212808513U (en) | 2020-07-31 | 2020-07-31 | Resistance adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212808513U (en) |
-
2020
- 2020-07-31 CN CN202021566593.5U patent/CN212808513U/en active Active
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