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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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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2 votes
4 answers
168 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 ...
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2 votes
1 answer
125 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 ...
0 votes
1 answer
94 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 ...
0 votes
1 answer
114 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 ...
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7 votes
2 answers
829 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 ...
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0 votes
1 answer
115 views

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 ...
1 vote
2 answers
233 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 ...
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0 answers
61 views

Current amplifier for Signal Generator output

My signal generator (SDG2122X) current output is not sufficient to power my load (requiring below 1A at <100 Hz). I need to amplify the current (as much as it needs without overloading the circuits)...
-2 votes
1 answer
302 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-...
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3 answers
271 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 ...
0 votes
1 answer
98 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 ...
0 votes
1 answer
33 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 ...
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3 votes
1 answer
142 views

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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1 vote
1 answer
121 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,...
-1 votes
1 answer
75 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 ...
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0 votes
1 answer
148 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 ...
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-1 votes
1 answer
150 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 ...
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0 votes
1 answer
80 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 ...
0 votes
1 answer
111 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 ...
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2 votes
1 answer
76 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 ...
0 votes
0 answers
64 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 ...
5 votes
3 answers
1k 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 (...
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2 votes
4 answers
287 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 ...
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1 vote
5 answers
1k 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 ...
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1 answer
58 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 ...
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1 answer
54 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 ...
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3 votes
3 answers
377 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,...
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1 answer
577 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 ...
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0 votes
1 answer
546 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. ...
0 votes
3 answers
324 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?
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