Questions tagged [function-generator]

A function generator usually refers to a piece of test equipment that generates a variety of waveforms over a range of frequencies. A typical unit may generate sine, square and triangle waves at a frequency up to around 20MHz, they tend to be less often used at higher RF frequencies.

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White and Pink Noise Generator Circuit - Cryptic AC Analysis

The “Electronic Devices and Circuit Theory” book (by Boylestad, Nashelsky) gives a brief description of a random noise generator circuit at the end of “BJT AC Analysis” chapter. (Btw, exactly the same ...
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Oscilloscope to Function Generator Trigger Delay

Simple question, is it common for there to be a delay between an external trigger out from an oscilloscope to the trigger in of a function generator? Specifically, I have a Rigol 1054Z oscilloscope ...
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472 views

Peculiar noise when observing a square wave

I'm using the following function generator: http://www.farnell.com/datasheets/499058.pdf?_ga=1.129729036.1263433037.1467971694 and a Tektronix TDS 1002B scope for some measurments. Most of the time I ...
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50 views

Upgraded flipflop square wave generator - did I do good?

I've drawn up a simple multi-frequency square wave generator, based on a astable multivibrator circut, with frequency trimmed by the two ganged pots (both 100k) and the range set by a DPDT switch, ...
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3answers
598 views

Square wave generator J1772

For an electric car charger I need to design a square wave of ±12V at 1kHz [SAE J1772]. I would like to make this one with a adjustable duty cycle so that the charging current can be adjusted. I ...
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128 views

Programmable GHz signals

I would like to generate custom waves in the gigahertz range. With beginner FPGAs like the DE0-Nano or microcontrollers like the Arduino, I can only generate waves up to the kilohertz range. What ...
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719 views

XR2206 Signal generator amplifier

Probably a silly question but I'm still a total noob on electronics. I got my hands on an old non-functional XR2206 based function generator and I wanted to bring it back to life and in the meantime ...
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267 views

Broadband RF Signal Generator

I am in the process of designing an RF signal generator, as many of my other projects require analysis up to several GHz. My hope was to receive some verification regarding the intended design. ...
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604 views

Amplitude modulator for a sine wave generator

I have a home made, mostly using the design in a magazine article, radio frequency signal generator, and I would like to be able to modulate (AM) the sine wave output, which is up to 8 MHz, with an ...
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15 views

Using a BK Precision function generator to drive an amplifier. How do I trigger the output from the function generator?

I acquired a modern BK Precision function generator (Model 4052) as part of a project to run an amplifier for a piezoelectric device. While I have figured out how to set the appropriate parameters for ...
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64 views

How to make a Ramp generator with a NE555 from 0V to 2/3VCC?

Hi Ladies and Gentlemen, It is related to an existing post here from early 2019. Voltage to PWM Circuit, need to understand frequency I am trying to make a simple 0-10V to PWM converter (idealy ...
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1answer
148 views

Unable to reduce noise or make pure sine wave using LM358

We have planned to make 30 kHz pure sine wave using LM358, by the use of a Wien bridge oscillator, I have made a Wien bridge oscillator connection in LM358. I have calculated the frequency by using ...
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17 views

Testing a charge sensitive preamplifier

I have a charge sensitive preamplifier (CSP) that can be used with a photomultiplier tube (PMT) detector. (http://www.cremat.com/CR-Z-PMT.pdf) I am trying to figure out CSP's working. I don't have a ...
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RIGOL DS1054Z Fixed trigger time for sweeping using a FeelTech digital signal generator

How do you properly setup a frequency sweep with a digital signal generator and a RIGOL oscilloscope? I've got a setup similar to one in this video: https://www.youtube.com/watch?v=ni07A7sZCPM, ...
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Making a common ground connection between a DC power supply and a waveform generator(33120A)

I would like to use a DC power supply to as a source voltage to a sensor and a waveform generator(33120A) to give another input to the sensor. I would like to know how can I make a common ground ...
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How do I turn a function generator into a current controlled function generator?

I'm using a custom pulse generator with voltage controlled biphasic (both negative and positive voltage) pulse train output to stimulate a living tissue which is grounded on one side. I need to be ...
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Amplitude control in a signal generator

A am working on an FPGA based function generator and I am aiming for max frequency to be higher than 10 MHz, hopefully 30 MHz. I have implemented most of the functionality except amplitude control. ...
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1k views

Using ICL8038 as a VCO

I wanted to use this function generator IC as a voltage controlled frequency output especially to obtain low frequency sine waves. But unlike many implementations, I wanted to control the frequency ...
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108 views

Output impedance function generator, limiting the current

I've the following schematic: simulate this circuit – Schematic created using CircuitLab Now the R of 50 ohm does limit the current that be supplied to the load. Is there a way to be ...
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154 views

Controlling high voltage/current signals with a Pi function generator

YES, I understand corona, arcing, safety, and Ohm's law... I am building a high power AC/DC variable power supply: Microwave oven transformers, CW voltage multipliers, flyback transformer, variac... ...
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156 views

LED output with Photodiode and Function Generator

Some of my student and I are designing a Physics experiment involving a high power LED, a square wave from function generator (50 ohm output impedance) and a digital oscilloscope (1 MOhm imput ...
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519 views

Using amplifier to drive an electromagnet

my group-mate and I are currently trying to create a kind of a simple speaker which could vibrate up to 1 kHz. The speaker we designed was simply made up of small solenoid and a cylindrical magnet, we ...