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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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.
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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 ...
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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 ...
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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 ...
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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 ...
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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 (...
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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 ...
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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 ...
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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 ...
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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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Signal generator for EMF, basic set-up advice
I am trying to generate a pulsed electro-magnetic field, and it's proven more complicated than expected.
The goal is to generate different waveforms 1-500Hz, and produce a field of ~0.05 Tesla via a ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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,...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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
(...
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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 ...
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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 ...
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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 ...
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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 ...
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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,...
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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 ...
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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.
...
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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?
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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 ...
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