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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2answers
396 views

RC circuit charging and discharging by square wave not giving a square wave across input on oscilloscope [closed]

question shifted to Input across RC circuit is not showing a square wave though the input is a square wave as it was unclear
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4answers
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Analog function generator ICs? [closed]

Does anyone know of any old-school function generator ICs (similar to the ICL8038 or XR2206) that are still on the market? (i.e. not obsolete / NFFD - I'm not interested in scouring the globe for old ...
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2answers
16k views

Should the output impedance of a function generator be high or low?

As we know, \$R_{load}\$ should be greater than \$R_s\$ on a function generator to avoid loading effect. Does it mean that the output impedance of the function generator should be lower?
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1answer
617 views

Impedance for Helmholtz Coil Connected to Audio Amplifier

I am trying to design a Helmholtz coil, that will have an impedance of about 2 ohms (the reason for this being that I am going to hook it up to a audio power amplifier, so to get the same wattage ...
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2answers
5k views

Ramp Generator using op amp

I'm searching for a ramp generator circuit which is using only op amps (I guess I need an integrator & differentiator for that). The output should be like in the image below.
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3answers
157 views

Unable to reduce noise and no proper sine wave is generated 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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1answer
93 views

Sawtooth wave generator not working in simulation

I tried to simulate the following PWM generator: The output at the PWM node records a constant voltage, not a PWM signal. So I simulated the sawtooth generator separately And the output of this ...
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0answers
50 views

Input across RC circuit is not showing a square wave though the input is a square wave [duplicate]

I wanted to observe the transient response of the capacitor so applied a square wave of 205mHz from a function generator as that would allow complete charging and discharging for the capacitor in the ...