CN206684607U - Pulse-generator circuit - Google Patents
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- CN206684607U CN206684607U CN201720338587.6U CN201720338587U CN206684607U CN 206684607 U CN206684607 U CN 206684607U CN 201720338587 U CN201720338587 U CN 201720338587U CN 206684607 U CN206684607 U CN 206684607U
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Abstract
The utility model is related to a kind of pulse-generator circuit, including produce the single machine unit of digital DC signal source, digital DC signal source is changed into frequency-adjustable pulse signal DA converting units, regulation waveform multiplication factor and the digital regulation resistance unit of the adjustable pulse signal of output amplitude and boosting unit that the low pulse signal of amplitude is adjusted to the pulse signal of amplitude high driving ability and exported.Single machine unit, DA converting units, digital regulation resistance unit and boosting unit are sequentially connected, and single machine unit is also connected with digital regulation resistance unit.The utility model forms alternating-current pulse generator circuit using digital circuit, frequency and amplitude can accurate adjustment, amplitude adjustable range is wide, can accurate adjustment a-c cycle, the slow liter of pulse number and pulse amplitude, slow drop, circuit structure is compact, simple, and cost is relatively low.
Description
Technical field
A kind of pulse-generator circuit is the utility model is related to, more particularly to a kind of amplitude adjustable range is wide and exchanges frequency
Rate, alternating-current pulse number all can accurate adjustment pulse-generator circuit.
Background technology
Impulse generator is a kind of conventional signal source, is widely used in the fields such as scientific research, production practices.Particularly
Communication system, it is often necessary to use a variety of different frequencies and the pulse signal of amplitude.In today of digital times, analog circuit
Reason is superseded because circuit is complicated, function is single etc. for the impulse generator of composition, the substitute is simple circuit, work(
Energy digital circuit various, low in energy consumption.But the impulse generator being made up of at present digital circuit typically can only regulating frequency and width
Value, and amplitude adjustable range is narrow, and precision is not high, and the impulse generator being made up of at present digital circuit typically export be all
DC pulse signal, if to realize the output of pulse signal, need to greatly increase the cost of circuit and complexity.
The content of the invention
The utility model is in order to solve the above-mentioned technical problem, there is provided a kind of pulse-generator circuit, can accurate adjustment direct current
The frequency and amplitude of waveform, and amplitude adjustable range is wide, and DC waveform is converted by better simply circuit can and struck a bargain
Flow waveform, and a-c cycle, alternating-current pulse number all can accurate adjustment, circuit is simple, and cost is relatively low.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：The utility model bag
Include single machine unit, DA converting units, digital regulation resistance unit and boosting unit；
Described single machine unit produces digital DC signal source, and is conveyed to described DA converting units；
Described DA converting units receive the digital DC signal source that single machine unit is transmitted through coming, by digital DC signal source
The pulse signal for changing into frequency-adjustable is conveyed to described digital regulation resistance unit；
Described digital regulation resistance unit receives the pulse signal for the frequency-adjustable that DA converting units are sent, and adjusts ripple
Shape multiplication factor, the adjustable pulse signal of output amplitude give described boosting unit；
Described boosting unit receives the adjustable pulse signal of amplitude that digital regulation resistance unit transmits, and expands amplitude
Adjustable range, the low pulse signal of amplitude is adjusted to pulse signal and the output of amplitude high driving ability.
The technical program uses single machine unit output pulse signal source, and frequency and waveform are processed into by DA converting units
Adjustable pulse signal, then the multiplication factor of waveform accurately is adjusted by controlling digital regulation resistance unit, then pass through liter
Unit is pressed to expand the adjustable range of amplitude.Therefore the technical program can with accurate adjustment DC waveform frequency and amplitude, and
Amplitude adjustable range is wide, and DC waveform is changed into AC wave shape using simple circuit can, and a-c cycle,
Alternating-current pulse number can also be accurately adjustable.
Preferably, described single machine unit includes single-chip microcomputer U6, single-chip microcomputer U6 uses STC12C5A40S2；Described
DA converting units include DA conversion chips U2 and amplifier U3A, amplifier U3B, amplifier U4B, DA conversion chip U2 and use TLC7528；
Single-chip microcomputer U6 4 pin are not only grounded through resistance R1 but also were connected with electrochemical capacitor C1 negative pole, electrochemical capacitor C1 positive pole connect voltage+
Crystal oscillator X is connected between 5V, single-chip microcomputer U6 14 pin and 15 pin, crystal oscillator X bipod is respectively through electric capacity C23 ground connection, through electric capacity C27
Ground connection, single-chip microcomputer U6 16 pin ground connection, single-chip microcomputer U6 38 pin had not only met voltage+5V but also be grounded through electric capacity C20, the 18 of single-chip microcomputer U6
The pin of pin~25 is connected with the pin of DA conversion chips U2 14 pin~7 respectively, and single-chip microcomputer U6 26 pin, 27 pin, 28 pin turn with DA respectively
6 pin, 15 pin, 16 pin for changing chip U2 are connected, and base stage of single-chip microcomputer U6 17 pin through resistance R16 with triode Q is connected, triode
Q emitter stage meets voltage+5V, and triode Q colelctor electrode is connected through resistance R18 with DA conversion chips U2 4 pin, DA conversion chips
U2 4 pin are not only grounded through resistance R26 but also connect voltage -5V, DA conversion chip U2 5 pin through resistance R27,1 pin is grounded, DA conversions
Resistance R17, DA conversion chip U2 2 pin and amplifier U3A inverting input phase are connected between chip U2 3 pin and 18 pin
Even, amplifier U3A in-phase input end ground connection, amplifier U3A output end are connected with DA conversion chips U2 18 pin, DA conversions
20 pin that chip U2 17 pin meet voltage+5V, DA conversion chip U2 are connected with amplifier U3B inverting input, and amplifier U3B's is same
Phase input end grounding, DA conversion chips U2 output end of 19 pin through resistance R19 with amplifier U3B are connected, amplifier U3B output
End, one end all the way through resistance R30 with electric capacity C5 is connected, electric capacity C5 another termination voltage+5V, another way and amplifier U4B's
In-phase input end is connected, and amplifier U4B inverting input had not only been grounded through resistance R28 but also the output end through resistance R20 and amplifier U4B
It is connected, amplifier U4B output end is connected with the input of described digital regulation resistance unit.The one of which port of single-chip microcomputer is defeated
Go out digital DC signal source, simple circuit, gentle drop can be risen so that control wave is slow, can also be controlled smart in a cycle
Really output pulse number.The change frequency of the reference voltage level of DA conversion chips is controlled by single-chip microcomputer, can accurately control friendship
The frequency of signal pulse stream, and only need to increase a part of seldom peripheral circuit, circuit is simple, and it is convenient to realize, cost compared with
It is low.
Preferably, described digital regulation resistance unit includes multi-channel digital chip U1, amplifier U4A and digital regulation resistance
U7, multi-channel digital chip U1 use CD4051 multi-channel digital chips, and digital regulation resistance U7 uses X9C104P numeral current potentials
Device；The pin of multi-channel digital chip U1 1 pin, 2 pin and 4 pin~10 is grounded, multi-channel digital chip U1 16 pin both connect voltage+
5V is grounded through electric capacity C9 again, and multi-channel digital chip U1 11 pin are connected with single-chip microcomputer U6 29 pin, multi-channel digital chip U1
13 pin be connected with capacitance C25 negative pole, capacitance C25 positive pole is connected with described amplifier U4B output end；Fortune
The in-phase input end for putting U4A is grounded through resistance R36, amplifier U4A inverting input, is grounded all the way through resistance R29, another way warp
Resistance R21 is connected with amplifier U4A output end, and amplifier U4A output end is connected with electrochemical capacitor C26 positive pole, electrochemical capacitor
C26 negative pole is connected with multi-channel digital chip U1 14 pin；Multi-channel digital chip U1 3 pin and the 3 of digital regulation resistance U7
Pin is connected, and digital regulation resistance U7 4 pin, 6 pin and 7 pin are grounded, and digital regulation resistance U7 8 pin had not only met voltage+5V but also through electric capacity C7
Ground connection, 35 pin with single-chip microcomputer U6,34 pin are connected respectively for digital regulation resistance U7 1 pin, 2 pin, digital regulation resistance U7 5 pin and institute
The input for the boosting unit stated is connected.The adjustable pulse signal of digital regulation resistance unit receives frequency, by blocking electricity
Hold, filter DC component, the resistance value of digital regulation resistance, the adjustable pulse signal of output amplitude are controlled by single-chip microcomputer.
Due to very accurate using numerically controlled mode, the adjustable range of amplitude.
Preferably, described boosting unit includes power operational amplifier U5 and step-up transformer T；Power arithmetic amplifies
Device U5 in-phase input end is connected with the output end of described digital regulation resistance unit, power operational amplifier U5 anti-phase input
End, the positive pole with electrochemical capacitor C24 is connected all the way, and electrochemical capacitor C24 negative pole is grounded through resistance R22, and another way is through resistance R31
It is connected with resistance R199 series circuit with power operational amplifier U5 output end, power operational amplifier U5 output end was both
It is grounded through resistance R32 and is connected again with electrochemical capacitor C21 positive pole, electrochemical capacitor C21 negative pole and step-up transformer T input side
It is connected, the output of step-up transformer T outlet side as impulse generator, the alternating-current pulse for exporting amplitude high driving ability is believed
Number.Boosting unit receives digital regulation resistance unit and is transmitted through next amplitude accurately adjustable pulse signal, due to adjusting amplitude
Narrow range, the low pulse signal of amplitude is adjusted to by power operational amplifier and step-up transformer by the high drive of amplitude
The pulse signal of kinetic force.
The beneficial effects of the utility model are：Alternating-current pulse generator circuit is formed using digital circuit, circuit structure is tight
Gather, frequency and amplitude can accurate adjustment, and amplitude adjustable range is wide, by better simply circuit can DC waveform
Change into AC wave shape, and can accurate adjustment a-c cycle and pulse number in a cycle and pulse amplitude it is slow
Rise, slow drop, circuit is simple, and cost is relatively low.
Brief description of the drawings
Fig. 1 is a kind of circuit theory connection block diagram of the present utility model.
Fig. 2 is a kind of circuit theory diagrams of single machine unit in the utility model.
Fig. 3 is a kind of circuit theory diagrams of DA converting units in the utility model.
Fig. 4 is a kind of circuit theory diagrams of digital regulation resistance unit in the utility model.
Fig. 5 is a kind of circuit theory diagrams of boosting unit in the utility model.
1. single machine unit in figure, 2.DA converting units, 3. digital regulation resistance units, 4. boosting units.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：The pulse-generator circuit of the present embodiment, as shown in figure 1, including single machine unit 1, DA converting units
2nd, digital regulation resistance unit 3 and boosting unit 4, single machine unit 1 respectively with DA converting units 2, the phase of digital regulation resistance unit 3
Even, the output end of DA converting units 2 is connected with the input of digital regulation resistance unit 3, the output end of digital regulation resistance unit 3 and
The input of boosting unit 4 is connected, and boosting unit 4 exports pulse signal.
Single machine unit 1 produces digital DC signal source, and is conveyed to DA converting units 2；
DA converting units 2 receive the digital DC signal source that single machine unit 1 is transmitted through coming, and digital DC signal source is converted
Pulse signal into frequency-adjustable is conveyed to digital regulation resistance unit 3；
Digital regulation resistance unit 3 receives the pulse signal for the frequency-adjustable that DA converting units 2 are sent, and regulation waveform is put
Big multiple, the adjustable pulse signal of output amplitude is to boosting unit 4；
Boosting unit 4 receives the adjustable pulse signal of amplitude that digital regulation resistance unit 3 transmits, and expands amplitude regulation
Scope, the low pulse signal of amplitude is adjusted to pulse signal and the output of amplitude high driving ability.
As shown in Figure 2 and Figure 3, single machine unit 1 includes single-chip microcomputer U6, and single-chip microcomputer U6 uses STC12C5A40S2；DA is changed
Unit 2 includes DA conversion chips U2 and amplifier U3A, amplifier U3B, amplifier U4B, DA conversion chip U2 and uses TLC7528, amplifier
U3A, amplifier U3B and amplifier U4B use LM358 operational amplifier chips；Single-chip microcomputer U6 4 pin not only through resistance R1 be grounded again with
Electrochemical capacitor C1 negative pole is connected, and electrochemical capacitor C1 positive pole meets voltage+5V, is connected between single-chip microcomputer U6 14 pin and 15 pin
Crystal oscillator X, crystal oscillator X bipod are grounded through electric capacity C23 ground connection, through electric capacity C27 respectively, single-chip microcomputer U6 16 pin ground connection, single-chip microcomputer U6
38 pin not only met voltage+5V but also be grounded through electric capacity C20, the pin of single-chip microcomputer U6 18 pin~25 14 pin with DA conversion chips U2 respectively
~7 pin are connected, and single-chip microcomputer U6 26 pin, 27 pin, 28 pin are connected with DA conversion chips U2 6 pin, 15 pin, 16 pin respectively, monolithic
Base stage of machine U6 17 pin through resistance R16 with triode Q is connected, and triode Q emitter stage connects voltage+5V, triode Q current collection
Pole is connected through resistance R18 with DA conversion chips U2 4 pin, and DA conversion chips U2 4 pin were not only grounded but also through resistance through resistance R26
R27 connects voltage -5V, DA conversion chip U2 5 pin, 1 pin is grounded, and electricity is connected between DA conversion chips U2 3 pin and 18 pin
R17 is hindered, DA conversion chips U2 2 pin are connected with amplifier U3A inverting input, amplifier U3A in-phase input end ground connection,
Amplifier U3A output end is connected with DA conversion chips U2 18 pin, and DA conversion chips U2 17 pin connect voltage+5V, DA conversion
Chip U2 20 pin are connected with amplifier U3B inverting input, amplifier U3B in-phase input end ground connection, DA conversion chips U2's
Output end of 19 pin through resistance R19 with amplifier U3B is connected, amplifier U3B output end, and one all the way through resistance R30 and electric capacity C5
End is connected, and electric capacity C5 another termination voltage+5V, another way is connected with amplifier U4B in-phase input end, and amplifier U4B's is anti-phase
Input had not only been grounded through resistance R28 but also the output end through resistance R20 with amplifier U4B is connected, amplifier U4B output end and numeral electricity
Capacitance C25 positive pole is connected in the device unit of position.
As shown in figure 4, digital regulation resistance unit 3 includes multi-channel digital chip U1, amplifier U4A and digital regulation resistance U7,
Multi-channel digital chip U1 uses CD4051 multi-channel digital chips, and digital regulation resistance U7 uses X9C104P digital regulation resistances；It is more
The pin of channel number word chip U1 1 pin, 2 pin and 4 pin~10 is grounded, multi-channel digital chip U1 16 pin not only met voltage+5V but also
It is grounded through electric capacity C9, multi-channel digital chip U1 11 pin are connected with single-chip microcomputer U6 29 pin, and the 13 of multi-channel digital chip U1
Pin is connected with capacitance C25 negative pole；Amplifier U4A in-phase input end is grounded through resistance R36, amplifier U4A anti-phase input
End, it is grounded all the way through resistance R29, output end of the another way through resistance R21 with amplifier U4A is connected, amplifier U4A output end and electricity
Solution electric capacity C26 positive pole is connected, and electrochemical capacitor C26 negative pole is connected with multi-channel digital chip U1 14 pin；Multi-channel digital
Chip U1 3 pin are connected with digital regulation resistance U7 3 pin, digital regulation resistance U7 4 pin, 6 pin and 7 pin ground connection, digital regulation resistance
U7 8 pin had not only met voltage+5V but also be grounded through electric capacity C7, digital regulation resistance U7 1 pin, 2 pin 35 pin with single-chip microcomputer U6,34 respectively
Pin is connected, and digital regulation resistance U7 5 pin are connected with the in-phase input end of power operational amplifier U5 in boosting unit 4.
As shown in figure 5, boosting unit 4 includes power operational amplifier U5 and step-up transformer T, power operational amplifier U5
Using LM1875 power operational amplifiers；Power operational amplifier U5 inverting input, all the way with electrochemical capacitor C24 positive pole
It is connected, electrochemical capacitor C24 negative pole is grounded through resistance R22, series circuit and power of the another way through resistance R31 and resistance R199
Operational amplifier U5 output end is connected, and power operational amplifier U5 output end had not only been grounded through resistance R32 but also and electrochemical capacitor
C21 positive pole is connected, and electrochemical capacitor C21 negative pole is connected with step-up transformer T input side (step-up transformer T 11 pin),
Step-up transformer T 12 pin ground connection, 2 pin and 6 pin of step-up transformer T outlet side, i.e. step-up transformer T respectively with socket J2
1 pin, 2 pin be connected, be connected with resistance R24 between socket J2 1 pin and 2 pin, socket J2 believes as the pulse of impulse generator
Number output socket, export the pulse signal of amplitude high driving ability.
Single machine unit 1 produces digital DC signal source by programme-control, is conveyed to DA converting units 2, then pass through list
Piece machine unit 1 controls the change frequency of the reference voltage level of DA converting units 2, the numeral that control DA converting units 2 will receive
DC signal source changes into the pulse signal of frequency-adjustable, and is conveyed to digital regulation resistance unit 3, digital regulation resistance unit
3 filter the DC component in the pulse signal received, and are controlled by single machine unit 1 in digital regulation resistance unit 3
The resistance value of digital regulation resistance, the adjustable pulse signal of the output amplitude of digital regulation resistance unit 3 is set to be risen to boosting unit 4
Pressure unit 4 expands amplitude adjustable range to the adjustable pulse signal of amplitude received, passes through power amplification and boosting handle
The low pulse signal of amplitude is adjusted to pulse signal and the output of amplitude high driving ability.
Single machine unit utilizes single-chip microcomputer U6, the waveform to be exported equidistantly is divided into by transverse axis in a cycle some
It is individual, 8 bit binary value corresponding to each voltage magnitude are made table, are placed in the ROM bit cell of single-chip microcomputer, phase
Time interval between adjacent 2 points is Δ T, is produced by the timer of single-chip microcomputer, multiple forms are made as needed；Generation contains
During the pulse signal of the slow gentle drop of liter, the form that waveform is ladder diagram can be made；Generation exports accurate arteries and veins in a cycle
When rushing number, unnecessary binary data is made with 0 form replaced.First take first in table element to export and change core to DA
Piece U2, time interval Δ T then, then take second element to give DA conversion chip U2, the like, after taking last element
Take first element of form from the beginning again, as follows circulate；Within a Δ T cycle, DA conversion chips only work one and adopted
The sample cycle, to ensure that the output valve of DA conversion chips in Δ T time does not change；After one samples, draw high DA and turn
The DA values that changing the enabled pin of chip makes to sample latch in the channel, when next Δ T arrives, then drag down DA conversion chips
Enabled pin, makes DA conversion chips again be at mode of operation, the like, single-chip microcomputer is produced digital DC signal source.
DA conversion chips U2 is twin-channel 8 bit digitals/analog converter, the analog signal values converted and reference electricity
Press REF value directly proportional.A channel reference voltages of the control signal REF through triode Q and DA conversion chip of single-chip microcomputer U6 outputs
Input REFA is connected, and the alternating-current pulse that DA converting units 2 change into the digital DC signal source received frequency-adjustable is believed
Number method be：During initialization, the A channel of DA conversion chips is first enabled, the P2 mouths output 0xFF of single-chip microcomputer, is delayed two DA turns
After changing the conversion time of chip, then the channel B of enabled DA conversion chips, the DA values of A channel are just latched in the output end of A channel,
REFA values by changing A channel can just change the output valve of A channel, and the output end of A channel is connected to B again by amplifier U3A
Channel reference voltage input REFB；When the control signal REF control triode Q conductings of single-chip microcomputer, A channel reference voltage is defeated
The magnitude of voltage for entering to hold REFA is+2.5V, when the control signal REF control triode Q cut-offs of single-chip microcomputer, A channel reference voltage
Input REFA magnitude of voltage is -2.5V；Triode Q conducting and cut-off is controlled by single-chip microcomputer U6, can be to change channel B
Reference voltage input terminal REFB voltage be on the occasion of or negative value, so that digital DC signal source is changed into the friendship of frequency-adjustable
Signal pulse stream, the pulse signal changed into is exported by the output end of channel B, then passes through amplifier U3B and amplifier UAB structures
Into gain circuitry processing after export and give digital regulation resistance unit.During REFA terminal voltage reversings, amplifier U3A output end voltages
Establishing needs 10us or so time, so what REFB terminations received is the exchange with rise time, 0 voltage and fall time
Reference voltage, such channel B can export the ac pulse voltage with dead band, facilitate step-up transformer to be handled.
Digital regulation resistance unit by capacitance C25 receive the pulse signal from amplifier U4B, filter direct current into
Part.During initialization, signal also without stabilization, first opens multi-channel digital chip U1 1 passage, exports value signal by a narrow margin, wait letter
When number stable, then 0 passage is switched to, the public passage output pin of output pulse signal to multi-channel digital chip U1 is more
The public passage output pin connection digital regulation resistance U7 of channel number word chip high voltage pin, numeral electricity is controlled by single-chip microcomputer U6
Position device U7 lifting/lowering input pin U/D and increase input pin INC, can the accurate sliding end of controlling potential device position, potentiometer
Sliding end output pulse signal, so as to the amplitude of accurate adjustment pulse signal.
Because the amplitude range of the pulse signal of the sliding end output of digital regulation resistance is 0~5V, adjustable range is too
It is narrow.The pulse signal connection power operational amplifier U5 of digital regulation resistance sliding end output in-phase input end, by with
Power arithmetic amplifying circuit based on power operational amplifier, high driving ability is exported in the output end of power operational amplifier
Pulse signal, the output end connection step-up transformer T of power operational amplifier, by power amplifier and boosting, passes through socket J2
The wide pulse signal of can output amplitude adjustable range, and can accurate adjustment a-c cycle and in a cycle
The slow liter of pulse number and pulse amplitude, slow drop.
The utility model forms alternating-current pulse generator circuit using digital circuit, and circuit structure is compact, frequency and amplitude
Can accurate adjustment, and amplitude adjustable range is wide, and DC waveform is changed into waves AC by better simply circuit can
Shape, and can accurate adjustment a-c cycle and pulse number in a cycle and the slow liter of pulse amplitude, slow drop, circuit letter
Single, cost is relatively low.
Claims (4)
1. a kind of pulse-generator circuit, it is characterised in that including single machine unit (1), DA converting units (2), digital regulation resistance
Unit (3) and boosting unit (4)；
Described single machine unit (1) produces digital DC signal source, and is conveyed to described DA converting units (2)；
Described DA converting units (2) receive the digital DC signal source that single machine unit (1) is transmitted through coming, by digital DC signal
The pulse signal that source changes into frequency-adjustable is conveyed to described digital regulation resistance unit (3)；
Described digital regulation resistance unit (3) receives the pulse signal for the frequency-adjustable that DA converting units (2) are sent, regulation
Waveform multiplication factor, the adjustable pulse signal of output amplitude give described boosting unit (4)；
Described boosting unit (4) receives the adjustable pulse signal of amplitude that digital regulation resistance unit (3) transmits, and expands width
It is worth adjustable range, the low pulse signal of amplitude is adjusted to pulse signal and the output of amplitude high driving ability.
2. pulse-generator circuit according to claim 1, it is characterised in that described single machine unit (1) includes monolithic
Machine U6, single-chip microcomputer U6 use STC12C5A40S2；Described DA converting units (2) include DA conversion chips U2 and amplifier U3A, fortune
Put U3B, amplifier U4B, DA conversion chip U2 uses TLC7528；Single-chip microcomputer U6 4 pin be not only grounded through resistance R1 but also and electrochemical capacitor
C1 negative pole is connected, and electrochemical capacitor C1 positive pole meets voltage+5V, and crystal oscillator X is connected between single-chip microcomputer U6 14 pin and 15 pin, brilliant
The X bipod of shaking is grounded through electric capacity C23 ground connection, through electric capacity C27 respectively, and single-chip microcomputer U6 16 pin ground connection, single-chip microcomputer U6 38 pin were both
Voltage+5V is met to be grounded through electric capacity C20 again, the pin of single-chip microcomputer U6 18 pin~25 respectively with the pin phase of DA conversion chips U2 14 pin~7
Even, single-chip microcomputer U6 26 pin, 27 pin, 28 pin are connected with DA conversion chips U2 6 pin, 15 pin, 16 pin respectively, and the 17 of single-chip microcomputer U6
Base stage of the pin through resistance R16 with triode Q is connected, and triode Q emitter stage meets voltage+5V, and triode Q colelctor electrode is through resistance
R18 with DA conversion chips U2 4 pin are connected, DA conversion chips U2 4 pin be not only grounded through resistance R26 but also through resistance R27 connect voltage-
5V, DA conversion chip U2 5 pin, 1 pin are grounded, and resistance R17, DA turn are connected between DA conversion chips U2 3 pin and 18 pin
2 pin for changing chip U2 are connected with amplifier U3A inverting input, amplifier U3A in-phase input end ground connection, amplifier U3A's
Output end be connected with DA conversion chips U2 18 pin, DA conversion chips U2 17 pin connect the 20 of voltage+5V, DA conversion chip U2
Pin is connected with amplifier U3B inverting input, and amplifier U3B in-phase input end ground connection, DA conversion chips U2 19 pin are through resistance
R19 is connected with amplifier U3B output end, amplifier U3B output end, and one end all the way through resistance R30 with electric capacity C5 is connected, electric capacity
C5 another termination voltage+5V, another way are connected with amplifier U4B in-phase input end, and amplifier U4B inverting input is both through electricity
The output end through resistance R20 with amplifier U4B is connected resistance R28 ground connection again, amplifier U4B output end and described digital regulation resistance list
The input of first (3) is connected.
3. pulse-generator circuit according to claim 2, it is characterised in that described digital regulation resistance unit (3) includes
Multi-channel digital chip U1, amplifier U4A and digital regulation resistance U7, multi-channel digital chip U1 use CD4051 multi-channel digital cores
Piece, digital regulation resistance U7 use X9C104P digital regulation resistances；The pin of multi-channel digital chip U1 1 pin, 2 pin and 4 pin~10 connects
Ground, multi-channel digital chip U1 16 pin had not only met voltage+5V but also be grounded through electric capacity C9, multi-channel digital chip U1 11 pin and list
Piece machine U6 29 pin are connected, and multi-channel digital chip U1 13 pin are connected with capacitance C25 negative pole, capacitance C25's
Positive pole is connected with described amplifier U4B output end；Amplifier U4A in-phase input end is grounded through resistance R36, and amplifier U4A's is anti-
Phase input, it is grounded all the way through resistance R29, output end of the another way through resistance R21 with amplifier U4A is connected, amplifier U4A output
End is connected with electrochemical capacitor C26 positive pole, and electrochemical capacitor C26 negative pole is connected with multi-channel digital chip U1 14 pin；It is more logical
Road digit chip U1 3 pin are connected with digital regulation resistance U7 3 pin, digital regulation resistance U7 4 pin, 6 pin and 7 pin ground connection, numeral
Potentiometer U7 8 pin had not only met voltage+5V but also be grounded through electric capacity C7, and digital regulation resistance U7 1 pin, 2 pin are respectively with single-chip microcomputer U6's
35 pin, 34 pin are connected, and digital regulation resistance U7 5 pin are connected with the input of described boosting unit (4).
4. pulse-generator circuit according to claim 3, it is characterised in that described boosting unit (4) is transported including power
Calculate amplifier U5 and step-up transformer T；Power operational amplifier U5 in-phase input end and described digital regulation resistance unit (3)
Output end be connected, power operational amplifier U5 inverting input, all the way the positive pole with electrochemical capacitor C24 be connected, electrolysis electricity
The negative pole for holding C24 is grounded through resistance R22, series circuit and power operational amplifier of the another way through resistance R31 and resistance R199
U5 output end is connected, and power operational amplifier U5 output end was not only grounded the positive pole phase with electrochemical capacitor C21 again through resistance R32
Even, electrochemical capacitor C21 negative pole is connected with step-up transformer T input side, and step-up transformer T outlet side is as pulse generation
The output of device, export the pulse signal of amplitude high driving ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338587.6U CN206684607U (en) | 2017-03-31 | 2017-03-31 | Pulse-generator circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338587.6U CN206684607U (en) | 2017-03-31 | 2017-03-31 | Pulse-generator circuit |
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| CN206684607U true CN206684607U (en) | 2017-11-28 |
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| CN107017795A (en) * | 2017-03-31 | 2017-08-04 | 德力西(杭州)变频器有限公司 | Pulse-generator circuit and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107017795A (en) * | 2017-03-31 | 2017-08-04 | 德力西(杭州)变频器有限公司 | Pulse-generator circuit and its control method |
| CN107017795B (en) * | 2017-03-31 | 2019-04-30 | 德力西(杭州)变频器有限公司 | Pulse-generator circuit and its control method |
| CN108568032A (en) * | 2018-04-20 | 2018-09-25 | 深圳可思美科技有限公司 | Electroporation device with heating function and its perforation fever method |
| CN108880289A (en) * | 2018-08-14 | 2018-11-23 | 广州易达包装设备有限公司 | A kind of adjustable high voltage electric field generating device |
| CN108880289B (en) * | 2018-08-14 | 2024-06-07 | 广州易达包装设备有限公司 | Adjustable high-voltage electric field generating device |
| CN115765689A (en) * | 2023-01-10 | 2023-03-07 | 北京市金华医疗器械研究所 | Intermediate frequency pulse circuit and therapeutic instrument |
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