CN202513889U - Dual-frequency signal generator - Google Patents
Dual-frequency signal generator Download PDFInfo
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- CN202513889U CN202513889U CN2012201604715U CN201220160471U CN202513889U CN 202513889 U CN202513889 U CN 202513889U CN 2012201604715 U CN2012201604715 U CN 2012201604715U CN 201220160471 U CN201220160471 U CN 201220160471U CN 202513889 U CN202513889 U CN 202513889U
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Abstract
The utility model discloses a dual-frequency signal generator which comprises a local signal circuit, a frequency modulation and amplitude modulation circuit, a frequency modulation circuit, a phase modulation and amplitude modulation circuit, a first signal output port, a second signal output port, a digital frequency meter, a first frequency adjusting knob, a second frequency adjusting knob, a first signal amplitude adjusting knob, a second signal amplitude adjusting knob, a phase adjusting knob and a power switch, wherein the electric signals output by the local signal circuit, the first signal output port and the second signal output port are all sine electric signals. The frequencies, amplitudes and phase difference of two sine electric signals generated by the dual-frequency signal generator disclosed by the utility model can be adjusted, the shortcomings of the traditional low-frequency signal generator are overcome, and the dual-frequency signal generator is relatively practical and convenient.
Description
Technical field
The utility model belongs to the physical experiment apparatus field, relates to a kind of Experiments of Electricity and uses signal generator, particularly a kind of two-frequency signal generator.
Background technology
Low frequency generator commonly used in the Physical Experiment generally has only a signal output port, makes troubles for some Experiments of Electricity.For example; When on oscilloscope, observing two each other vertical simple harmonic motions synthetic; Usually to be connected respectively to oscillographic x and y input with two low frequency generators, when the frequency of two signals become simple integer than the time, on oscilloscope, can observe synthetic Lee's Sa like figure.But because the constant phase difference of two signals that two separate signal sources can not guarantee to participate in synthesizing, it is unstable and constantly change therefore can to observe lissajous figures, thereby influences experiment effect.
The utility model content
The technical problem that the utility model will solve is a kind of two-frequency signal generator of exploitation, and it can export two signals of telecommunication simultaneously, and the frequency of these two signals and phasic difference all can be regulated according to the experiment needs.
In order to solve the problems of the technologies described above, the utility model is taked following technical scheme:
A kind of two-frequency signal generator of the utility model comprises local signal circuit, FMAM circuit, FM circuit, phase-modulation and amplitude-modulation circuit, first signal output port, secondary signal output port, digital frequency meter, first frequency adjusting knob, second frequency adjusting knob, the first signal amplitude adjusting knob, secondary signal amplitude adjusted knob, position phase adjusting knob and mains switch; Said local signal circuit links to each other with said first signal output port after connecting said FMAM circuit through lead; Said FMAM circuit through lead successively with said FM circuit with connect said secondary signal output port after said phase-modulation and amplitude-modulation circuit links to each other, said first signal output port links to each other with said digital frequency meter through lead respectively with said secondary signal output port.
The signal of telecommunication of said local signal circuit, said first signal output port, the output of said secondary signal is sinusoidal electric signals.
The frequency of the sinusoidal electric signals of said first signal output port output and amplitude are regulated by said first frequency adjusting knob and the said first signal amplitude adjusting knob respectively; The frequency of the sinusoidal electric signals of said secondary signal output port output and amplitude are regulated by said second frequency adjusting knob and said secondary signal amplitude adjusted knob respectively.The phasic difference of the signal of said first signal output port and the output of said secondary signal output port is by the adjusting knob adjusting mutually of institute's rheme.Said digital frequency meter is used to show output signal frequency, and said mains switch is used to control the break-make of the utility model signal generator general supply.
The utility model is owing to adopt above-mentioned design; Frequency, amplitude and the phasic difference of the sinusoidal electric signals of its two signal output port outputs can be regulated according to the experiment needs; Overcome the shortcoming of traditional low frequency generator; Comparatively practical and convenient when experiments such as synthetic lee sajous graphics, help improving experiment effect.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the panel sketch map of the utility model two-frequency signal generator.
Fig. 2 is the schematic circuit of the utility model two-frequency signal generator.
Among the figure: 1. panel, 2. first signal output port, 3. secondary signal output port, 4. first frequency adjusting knob; 5. second frequency adjusting knob, 6. a phase adjusting knob, the 7. first signal amplitude adjusting knob, 8. secondary signal amplitude adjusted knob; 9. mains switch, 10. digital frequency meter, 11. local signal circuit; 12. the FMAM circuit, 13. FM circuits, 14. phase-modulation and amplitude-modulation circuit.
Embodiment
Like Fig. 1, shown in Figure 2; Comprise first signal output port 2, secondary signal output port 3, first frequency adjusting knob 4, second frequency adjusting knob 5, position phase adjusting knob 6, the first signal amplitude adjusting knob 7, secondary signal amplitude adjusted knob 8, mains switch 9 and digital frequency meter 10 on the panel 1 of a kind of two-frequency signal generator of the utility model; Two-frequency signal generator inside comprises local signal circuit 11, FMAM circuit 12, FM circuit 13 and phase-modulation and amplitude-modulation circuit 14; Wherein local signal circuit 11 links to each other with first signal output port 2 after connecting FMAM circuit 12 through lead; FMAM circuit 12 through lead successively with FM circuit 13 with connect secondary signal output port 3, the first signal output ports 2 after phase-modulation and amplitude-modulation circuit 14 links to each other and link to each other with digital frequency meter 10 respectively through lead with secondary signal output port 3.
The signal of telecommunication of local signal circuit 11, first signal output port 2,3 outputs of secondary signal output port is sinusoidal electric signals.
The frequency of the sinusoidal electric signals of first signal output port, 2 outputs and amplitude are regulated by the first frequency adjusting knob 4 and the first signal amplitude adjusting knob 7 respectively; The frequency of the sinusoidal electric signals of secondary signal output port 3 outputs and amplitude are regulated by second frequency adjusting knob 5 and secondary signal amplitude adjusted knob 8 respectively; The phasic difference of two signals of first signal output port 2 and 3 outputs of secondary signal output port is by position adjusting knob 6 adjustings mutually.Digital frequency meter 10 is used to show output signal frequency, and mains switch 9 is used for the break-make of control-signals generator general supply.
Claims (2)
1. two-frequency signal generator; It is characterized in that: comprise local signal circuit (11), FMAM circuit (12), FM circuit (13), phase-modulation and amplitude-modulation circuit (14), first signal output port (2), secondary signal output port (3), digital frequency meter (10), first frequency adjusting knob (4), second frequency adjusting knob (5), the first signal amplitude adjusting knob (7), secondary signal amplitude adjusted knob (8), position phase adjusting knob (6) and mains switch (9); Said local signal circuit (11) connects FMAM circuit (12) back through lead and links to each other with said first signal output port (2); Said FMAM circuit (12) through lead successively with FM circuit (13) with connect said secondary signal output port (3) after phase-modulation and amplitude-modulation circuit (14) links to each other, said first signal output port (2) links to each other with said digital frequency meter (10) through lead respectively with said No. second output port (3).
2. a kind of two-frequency signal generator according to claim 1 is characterized in that: the signal of telecommunication of said local signal circuit (11), said first signal output port (2), said secondary signal output port (3) output is sinusoidal electric signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201604715U CN202513889U (en) | 2012-04-13 | 2012-04-13 | Dual-frequency signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201604715U CN202513889U (en) | 2012-04-13 | 2012-04-13 | Dual-frequency signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513889U true CN202513889U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201604715U Expired - Fee Related CN202513889U (en) | 2012-04-13 | 2012-04-13 | Dual-frequency signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840795A (en) * | 2014-02-26 | 2014-06-04 | 中国科学院自动化研究所 | Orthogonal detector circuit based on DDS chip phase shift |
| CN105323675A (en) * | 2014-06-03 | 2016-02-10 | 无锡科技职业学院 | Signal generator |
-
2012
- 2012-04-13 CN CN2012201604715U patent/CN202513889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840795A (en) * | 2014-02-26 | 2014-06-04 | 中国科学院自动化研究所 | Orthogonal detector circuit based on DDS chip phase shift |
| CN105323675A (en) * | 2014-06-03 | 2016-02-10 | 无锡科技职业学院 | Signal generator |
| CN105323675B (en) * | 2014-06-03 | 2018-06-19 | 无锡科技职业学院 | A kind of signal generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20130413 |