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Questions tagged [signal-generator]

A signal generator is an electronic device that generates repeating or non-repeating electronic signals in either the analog or the digital domain.

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Current DAC/current wave-form generator [closed]

I am designing a PCB on which I need to generate an arbitrary current waveform. The maximum current output is (-+6 uA), resolution >=8 bit, fast settling <=0.1 us, sampling rate >=5 MHz. I ...
Bakr Hesham's user avatar
1 vote
2 answers
152 views

How to create an analog power source?

I'm in the process of building a signal generator using the AD9833. It requires a dedicated analog power supply, but I'm not entirely clear on how to devise such a power supply. From various resources ...
0x1a551e2's user avatar
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3 votes
3 answers
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How safe is this TrueRife F-122 frequency generator?

A close friend bought a TrueRife frequency generator in hope of improving health.  I'm skeptical of the claimed healing powers, however let's put this aside for a moment;  if it helps - great!  The ...
Astrogator's user avatar
1 vote
2 answers
122 views

How to generate a sine wave that is in phase with a generated square wave at 1MHz for lock-in amplifier?

I am building a lock in amplifier (LIA) for fluorescence lifetime measurement using off the shelf components, after going through literature, I have decided to use square wave for excitation of the ...
Pranav Agumbe's user avatar
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1 answer
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How to make one time changing state pulse?

I'm undergraduate learning the analog circuit design. I want to make a signal that changes its state only one time when the input pulse signal changes its state at first. I'm trying to use D-flip flop,...
xoo's user avatar
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OpAmp Selection | Sine Wave Amplifier: 30 MHz, 30Vpp with 15V offset

I am currently working on amplifying the output sine wave of the TG5011 professional signal generator. Below are the specifications for the amplifier I am aiming to create: Power Supply: A single ...
Vitaliy Petliakivskyi's user avatar
2 votes
1 answer
289 views

Pulse generator ll - Art of Electronics

How does Q3 hold Q1 at ground? I understand the operation of the pulse generator, I just don't get how q3 holds the collector of q1 at ground.
David Ab's user avatar
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RF circuit/component to generate a chirped waveform (from 0.5 GHz to 1.5 GHz) over 100 ns

I need to generate a 1 GHz bandwidth chirped pulse, 100 ns long. In the past, I have done this using fast arbitrary waveform generators (Keysight M8195A), but this is an expensive and very general ...
LDPC's user avatar
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2 answers
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How to stop a PWM signal cleanly on the secondary timer/counter of the AVR8X processors?

On the new generation of ATmega and ATtiny (for example, the ATmega3208), there is only one timer/counter (TCA) with more than one compare channel. All the others (TCB0, TCB1, TCB2, ...) lack the ...
vsz's user avatar
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0 votes
1 answer
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Synchronizing signal generators with shared LO

I'm currently trying to test my ADC chip using two signal generators. Below figure visually illustrates how the test setup would look like: The traditional approach uses a 10 MHz reference port to ...
Emm386's user avatar
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How to drive 1 MHz ultrasonic transducer, transmitter-reciever schematic

I have just bought some ultrasonic sensors from China for a project I'm developing, and the datasheet is not the best, also with my low electrical engineering skills, I am not sure of how to drive the ...
Tomas Tchimino Marcotti's user avatar
1 vote
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How to design a adjustable pulse generator?

I want to design a pulse generator module to output pulse signals with specified characteristics according to the command of the host computer or MCU. The requirements are as follows: The rise time (...
haiwuxing's user avatar
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1 answer
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What type of cables to buy for injecting/measuring voltage?

I've been designing several circuits in an electronic lab where I'd use alligator clip leads for injecting a signal in a circuit and oscilloscope probes to measure voltage. Now I'm trying to buy my ...
Jason Burton's user avatar
1 vote
1 answer
104 views

Electrical Fast transient generator

I am trying to build my own EFT generator (IEC 610000-4-4). A person online had done some design and they have calculated the values of the components in order to make the circuit. I used LTSpice to ...
DRF's user avatar
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2 answers
256 views

Unknown interference between signal generator, oscilloscope, and op-amp

simulate this circuit – Schematic created using CircuitLab I am new to hardware experiments, although I have acceptable theoretical knowledge. My setup is: a signal generator a breadboard with ...
Jason Burton's user avatar
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1 answer
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What is my next step to debugging an old NTSC video generator circuit that doesn't sync?

I know this is somewhat broad but I hope it's appropriate here. I have a 1970s PCB that is designed to output a sort of bitmap video image via a standard NTSC signal. It came to me as a half-built kit ...
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triangular generator showing weird behavior when reducing the capacitance

I made this triangular wave generator, the left op-amp is an integrator and the right one a non-inverting comparator with hysteris. I require a 1khz signal with Vpp=5V and average value 2.5V. My ...
BonPi's user avatar
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2 votes
0 answers
114 views

Function generator impedance matching with an amplifier

I am currently designing an experiment with a material which at low temperatures (below 180K) works like a light detector for infrared. There needs to be a bias applied to the sample which has to be ...
DFYD's user avatar
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2 votes
4 answers
732 views

Boost Voltage of Signal Generator Output (via Audio/Signal Transformer?)

Goal: Have a frequency variable voltage of at least 200 V (more would be great), between 50 Hz and 8 kHz (sine wave, as pure as possible). The voltage is used as open circuit voltage (only drives a ...
Maxim's user avatar
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2 votes
1 answer
226 views

Correcting the lower output level of a square wave generator

I have assembled a square wave generator following this schematic from an old book. R1 and R2 are both 1 kohm, C1 is 68 pF, and C2 is 2.2 nF. The author of the book claims that this combination is ...
Viktor Goryainov's user avatar
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1 answer
344 views

I designing a pulse generation circuit using capacitor and resistor but my output is not coming as expected

I am designing a pulse circuit which I will be feeding to a comparator. I am using a combination of resistor capacitor and diode for generating positive edge triggered pulse as shown in the below ...
Vengatesh's user avatar
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1 answer
479 views

LHT00SU1 logic analyzer clock generator

I was using a LHT00SU1 logic analyzer and according to this it should have the capability to produce a variable frequency signal (i assume through the CLK pin). Using pulseview with fx2lafw firmware I ...
Paa's user avatar
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7 votes
2 answers
1k views

Measuring signal with of nanosecond pulse width with a spectrum analyser?

I'm looking to measure the signal width of electronic signals (device under test, DUT). The problem is that these signals have a quite short pulse width which would require me to use a GHz ...
ulix's user avatar
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1 answer
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Generate encoder signal without using delay

I'm looking to emulate an encoder signal using an Arduino microcontroller (Seeed Xiao, SAMD21 Cortex M0+). The following works but locks up the main thread with delays. The frequency of pulses isn't ...
waspinator's user avatar
1 vote
2 answers
289 views

How to make this arbitrary waveform?

Im trying to generate a custom waveform based on the instrumentation amplifier. The concept is that using two signals* , square 2Vpp and triangular 1Vp, get the next output: Under the next ...
avelardo's user avatar
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-2 votes
1 answer
1k views

Choosing an opamp for the amplifier stage of a signal generator (uses AD9833) [closed]

I am currently on a project to make my own signal generator for use in testing circuits etc. I have based it largely on a tutorial here: https://www.allaboutcircuits.com/projects/how-to-DIY-waveform-...
k.h's user avatar
  • 103
0 votes
3 answers
821 views

XOR gate frequency generator

I was wondering if a frequency generator using only a XOR gate would be possible, and doable, since a XOR gate turns on when both inputs are different, and off when similar. So by connecting the ...
TeD van Loon's user avatar
0 votes
1 answer
392 views

Why isn't my generator able to output the correct signal in a closed circuit?

I have a Siglent 1032X waveform generator. When I try to output a certain DC signal, my multimeter shows there's a significant voltage drop across the generator itself in a closed circuit. For ...
Peet1167's user avatar
0 votes
1 answer
52 views

Alternative clock generator for CDCE62005 reference clock? [closed]

I am working on a circuit which uses the CDCE62005 to generate clock signals for a DAC and an FPGA. The evaluation board of the CDCE62005 uses a PE7745DU-30.72M for the primary clock reference - but I ...
F_Schmidt's user avatar
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3 votes
1 answer
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Bio-impedance circuit inputs

Recently, I wanted to build a replica of a bio-impedance circuit that I found in one of the NIH.gov papers. As obvious, bio-impedance circuits are usually used to measure body composition. They are ...
ast5jx's user avatar
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1 vote
1 answer
235 views

TimerBlox LTC6992 PWM variable clock generator at 2.3MHz... out of tolerance or used incorrectly?

The TimerBlox LTC6992 (https://www.analog.com/media/en/technical-documentation/data-sheets/LTC6992-1-6992-2-6992-3-6992-4.pdf) is a PWM chip specified to have a master output frequency maximum of 1MHz,...
Bit Fracture's user avatar
-1 votes
1 answer
84 views

Device RF input calibration setup

A device requires RF input calibration. The input signal specification is: CW, 60MHz, 0.0 dBm. The user manual recommends setup 1 (fig below). Provided that the Signal Generator is capable of ...
pbn's user avatar
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0 votes
1 answer
283 views

JDS6600 signal generator - broken or normal?

I recently treated myself to a JDS6600-60M signal generator. It's a (very) cheap one but that's because electronics is just a hobby and not something I make money with or anything. The other day I ...
RobIII's user avatar
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-1 votes
1 answer
247 views

Negative terminal of a sine generator

simulate this circuit – Schematic created using CircuitLab I had this problem where the anode of a diode was connected to the negative terminal of a sine generator. I wondered how it functions ...
Ayman's user avatar
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0 votes
1 answer
170 views

How to use same low pass filter for square and sine wave

I'm trying to desing simple DDS waveform generator using DDS IC, but I'm a bit lost about designing output filter for it. My requirements are 1 Hz - 25 MHz sine, square and triangle/ramp wave. Using ...
Poseydon's user avatar
0 votes
1 answer
179 views

Decoupling channels on an oscilloscope?

I have 2 x AD9833s programmable waveform generators running off the same SPI bus. Generator A is on channel 1 (yellow in the picture below) and is a sine wave set at 1 kHz. Generator B is on channel ...
DrBwts's user avatar
  • 135
2 votes
1 answer
157 views

Obtaining frequency of 550 Hz from Simple Triangle and Square Waveform Generator Circuit

First time asking a question so sorry if I miss some things. I'll try to be thorough and straightforward. I'm trying to design a square wave from a triangle wave-square wave generator circuit. The ...
amused_electron's user avatar
0 votes
0 answers
75 views

What is the practical difference in this DC offset remover?

I am working on audio signal oscillators. My oscillator generates 0V to +5V triangle wave. Then I'm removing DC bias to get -5V to +5V signal. I have found two examples on how to do this: What is the ...
somerandomusername's user avatar
5 votes
3 answers
2k views

One transistor square wave amplifier: why doesn't it work?

I want to amplify a square wave coming from my signal generator using a single transistor and a 100V DC power supply. This is the circuit I created: https://everycircuit.com/circuit/4628349765550080 (...
kregus's user avatar
  • 187
2 votes
4 answers
680 views

Designing a high voltage AC signal generator

I'm trying to design a high voltage AC signal generator for some lab experiments. This schematic is as far as I've got and I wanted to sanity check the basic approach before I continue as I'm used to ...
Tudor's user avatar
  • 21
1 vote
5 answers
2k views

High Frequency Square Wave Generator

I want to generate square wave but there are some challenges. Rise time should be less than 2ns as well as fall time (for 0V to 5V). Duty cycle is not so important it should stay high like 40 ns. I am ...
Ismail's user avatar
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0 votes
1 answer
67 views

How does a "pulse dialer" (e.g. IN9151) internally work?

I'm wondering how a so called "pulse dialer" like the IN9151 (https://www.digchip.com/datasheets/parts/datasheet/237/IL9151-3N-pdf.php) internally works, meaning how it is achieved to ...
mythbu's user avatar
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0 votes
1 answer
58 views

What electrical attributes determine if signals from a signal generator can penetrate objects?

Lately, I've been reading about all kinds of signal generators (pulse generator, arbitrary function generators, arbitrary waveform generator, waveform generator, frequency sweep generator, PEMF signal ...
JustBeingHelpful's user avatar
3 votes
3 answers
585 views

Noise at peak of triangle wave

I'm building a signal generator for my electronics project, and to generate the triangle wave, we're required to use a relaxation oscillator (we can add other circuits around it to improve the quality,...
Liam F-A's user avatar
  • 198
0 votes
1 answer
1k views

Test transformer with signal generator and oscilliscope

I would like to see how well a sine wave would pass thru a transformer. (from primary side to secondary) Is it possible/practical to test small transformers which you might find in small low powered ...
Doc's user avatar
  • 103
0 votes
1 answer
1k views

How to measure a signal generator with an oscilloscope probe?

I have a signal generator and an oscilloscope. When I connect a plain BNC cable between them, and I generate a square wave, I see the square wave on the oscilloscope with the correct voltage. ...
Michel Keijzers's user avatar
0 votes
3 answers
426 views

Flat line on output of single supply sawtooth generator

I have built the following sawtooth generator using LM358 opamps: In simulation everything works fine, however in reality I get only flat line on output. Anyone got any idea what's going on?
Em Ka's user avatar
  • 167
1 vote
1 answer
103 views

Isolation transformer 12 VDC

I want to use 12 VDC and step it up to 400 VAC or higher at 100 kHz. I am buiding a signal generator that outputs a sine wave or square wave with an adjustable frequency of up to 100 kHz. I need an ...
Gene Ward's user avatar