Skip to main content

Questions tagged [sawtooth-waveform]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
2 votes
2 answers
120 views

LTSpice model of a NE555 as linear ramp generator has wrong frequency

So I found the variant of using an NE555 to generate a sawtooth signal by charging the capacitor using a constant current source. The simulation is shown below. The lower treshold is 1/3 * VDD and the ...
Junius's user avatar
  • 1,041
1 vote
0 answers
59 views

Designing a sawtooth VCO

Beginner here. I am trying to build a sawtooth VCO that runs on 5V, based on an op-amp integrator. See the design and output (Vout of the op-amp) below. For this circuit, the input voltage needs to ...
jessetvogel's user avatar
3 votes
1 answer
121 views

Strange low frequency sawtooth in a 110 kHz Hartley oscillator

I am trying to build a Hartley oscillator for 110 kHz using a BJT according to the following schematic: I am assuming \$ \beta=100\$ and \$ V_t=25mV \$ The collector current is about 1.63 mA, Vc is ...
amogh waghmare's user avatar
4 votes
2 answers
466 views

Generation of a high-resolution triangle wave [closed]

I am trying to generate a triangular wave of frequency ~ 100 kHz and V(p-p) = 4.5 V. Additionally, I also have a tight specification that the value of the peak of triangular wave generated in each ...
Debugger_Op's user avatar
1 vote
1 answer
583 views

Free running ramp generator with negative maximum and minimum voltages

I'm currently trying to figure out how to design a free running ramp generator for a project. I'm required to use op amps for both the bootstrap sawtooth generator and the Schmitt trigger, and the ...
oralairwheat's user avatar
0 votes
1 answer
73 views

Master pitch control for oscillators

I’m doing a project of four oscillators where each one allows switching between a sawtooth or square waveform. The diagram that I attach is the corresponding one for a single oscillator, each one has ...
Zlmanuel87's user avatar
0 votes
2 answers
295 views

Class-D audio amplifier produces a sawtooth wave on the output, not sine

I am using a MAX9744 Class-D amplifier and want to get a sine wave in the output. Someone suggests using an LC low-pass filter for this, and in the datasheet of the amplifier, the values for inductors ...
mangozu's user avatar
1 vote
1 answer
53 views

Effects of ferrite isolator on waveform

I have recently measured the standing wave signal from a waveguide. I notice that as the frequency is lowered the signal tends towards a sawtooth wave. ** My guess for why this happens is that the EM ...
dk30's user avatar
  • 11
0 votes
1 answer
102 views

Sawtooth wave generation not perfect

Here is my schematic for a sawtooth wave generator with a potentiometer to control the frequency. The sawtooth output is not a perfect shape. How can I improve my circuit to make a more true sawtooth ...
Charles Guilbault's user avatar
0 votes
2 answers
512 views

Producing a sawtooth wave from a square wave

I am trying to produce a sawtooth wave from a 2 MHz square wave. For this, I am using an LT1800 op-amp. I want to get a -5V to 5V sawtooth wave shape. I did not do this in LTspice. I made the ...
natarajmarble's user avatar
6 votes
3 answers
1k views

Unwanted saw tooth waveform on DC rails

I am somewhat new to electronics and am building up a dual rail power supply. Under no load the DC rails sit at about +15V and -15V. Please refer to the schematic and oscilloscope screenshot (below) ...
Pat's user avatar
  • 103
1 vote
1 answer
204 views

Generating sawtooth waveform

I am trying to generate a sawtooth waveform between 0 and 1 which would have a frequency upto 200 kHz. I run this piece of code within a Matlab function block - it works fine up to 10 kHz, but higher ...
SM32's user avatar
  • 406
0 votes
0 answers
181 views

Clock Generator with Variable Pulse Width Design Help

I'm working on a design that requires a clock generator with variable pulse width. The pulse width is controlled by a potentiometer, and the clock speed is controlled by another potentiometer. It's ...
Lucas Henry's user avatar
0 votes
1 answer
86 views

How to spec a power supply for capacitor charging given the simulation and large requirements?

I am using the LT3751 as a capacitor charger for a large capacitor (30mF) and am trying to get an idea of the kind of power supply I would require in order to come close to the simulation charge time. ...
user avatar
1 vote
0 answers
57 views

How do you sketch a signal given by x(t) = A(t/T) for time period 0 to T? Does t/T simply denote that the signal covers entire duration of T?

Does t/T simply mean that the signal has magnitude A over the entire "T" duration? Or does it mean that it covers only a fraction? How will it look? I tried assuming A to be some magnitude ...
KatShill's user avatar
2 votes
1 answer
215 views

Triangular waveform with low noise

I have a task to generate a triangular signal with variable amplitude and support. The figure shows the type of signal and what parameters I want to change (“d” and “o”). Moreover, I need to change ...
red15530's user avatar
0 votes
2 answers
104 views

AC DC adapter sawtooth current draw above rated value

I will be using AC DC wall adapter to power the flyback converter. Power adapter is rated 15V@3A = 45W. The question is, can I draw peaks over 3A if I stay below 45W on average? For example, with the ...
Igor  Rybalka's user avatar
0 votes
3 answers
2k views

Understanding sawtooth wave harmonics

I've been playing synthesizers for a while and I'm trying to understand their math and electronics better. The sawtooth is one of the three common waveforms on most subtractive synths. The waves are ...
Paghillect's user avatar
0 votes
2 answers
385 views

How to amplify sawtooth wave?

I have to amplify the sawtooth wave from 0-7V to 0-14V with its waveform intact. I tried to amplify the wave using op-amps, MOSFET but the waveform shape changes. I'm new to analog circuit design, it ...
Hrithik Chand's user avatar
-1 votes
1 answer
558 views

How to design a sawtooth wave generator? (Required specification of sawtooth wave 0-14V and 50kHz)

I tried using ICs like the ICL-8038 and the 555 time. It didn't work out because of the supply voltage constraint. I also tried using an op-amp (LTC6244) based circuit. It gave a distorted wave at ...
Hrithik Chand's user avatar
1 vote
0 answers
63 views

Load curve control via differential pair

Last few weeks I have been designing a circuit, which is inputted with saw wave and outputs (amplification fairly linearly if possible) amplified voltage across two loads, where load voltage/current ...
lucenzo97's user avatar
  • 2,442
0 votes
1 answer
85 views

Sawtooth waveform used for wireless battery charging

Why don't we use sawtooth AC waveforms instead of the sinusoidal ones? Since the rate of change of voltage is steady for a purely resistive circuit the rate of change of current is costant-> linear ...
Amazing Random Guy's user avatar
1 vote
1 answer
98 views

Triangular wave to sawtooth wave

wanted to design a sweeper circuit to change a triangular wave into sawtooth wave. Is there a schematic for this to design a circuit?
Sonal Niraula's user avatar
3 votes
0 answers
165 views

Sawtooth VCO DC offset issues

[Apologies in advance for possible misuse of terminology. I don't have any formal education in EE and am mostly self taught, so I may be lacking in some fundamentals.] I am trying to design a discrete ...
wurly's user avatar
  • 31
1 vote
2 answers
721 views

How to use an op-amp (that only uses ground and positive voltage to operate) to create a sawtooth/triangle wave generator?

The design I have in mind will be battery operated, so I have found the TL972 (Datasheet Here) which only operates from 0 - 12 V. What I want this op-amp to do is to create a sawtooth/triangle wave ...
VIkutta's user avatar
  • 11
0 votes
2 answers
971 views

Miller integrator ramp generator?

In a page on Ramp Generators I found this peculiar circuit which is said to be superb in its linearity. But I can't make sense of it. It doesn't discuss any of the actual R and C values. I can see ...
Gunther Schadow's user avatar
1 vote
2 answers
268 views

A sawtooth oscillator breaks down at higher frequencies

Here is a nice and straight-forward sawtooth oscillator that I learned from this video. It is simple and nice. When we come to higher frequencies though, I am dealing with very finicky adjustments ...
Gunther Schadow's user avatar
2 votes
2 answers
1k views

What would be the simplest BJT based *linear* ramp generator?

Let's say I have a 74LS161 based counter, and I want an analog ramp generator which will linearly increase until the ripple-carry-output goes back down (so that the ramp goes up the entire time the ...
Gunther Schadow's user avatar
2 votes
2 answers
466 views

I need diodes to build a R-2R ladder DAC from original TTL chips (not Arduino) don't I?

I am thinking through how I could turn my analog oscilloscope with X-Y mode and Z input in the back into a simple computer monitor. I am learning about generating a proper sawtooth with a constant ...
Gunther Schadow's user avatar