Frequency generators

[TotalMadness]

Hi,

I have a question about frequency generators. I often see people in YouTube videos using a frequency generator, especially in conjunction with Rodin Coils. Could someone explain why they are used? I assume they are either related to AC or pulsed DC.

Thanks

 

[Ian Rogers]

I use a function generator to test serial communications, set a square wave to 9600 hz to see if the hardware works ok. I also use it when reworking old boards when a signal isn't available.
It's also used to pre-calibrate my wind speed units.

Ian

 

[crutschow]

Many circuits (linear power supplies being one exception) involve the processing of various signals, either analog or digital. For testing (or operation of some) of these circuits a signal source is needed. This can be provided by a signal generator of which there are several types:

RF generators provide high frequency sine waves.

Audio generators generate low frequency, low distortion sine waves.

Pulse generators provide square (digital) or pulse signals.

Function generators provide various types of signals, depending upon their design, and typically includes sine, square/pulse, and triangular waveforms.

 

[TotalMadness]

Does this mean that you can use a signal generator instead of a power supply, or is the signal inserted into the circuit?

 

[Ian Rogers]

For injecting signals... Can't be used as a power source..

 

[crutschow]

Does this mean that you can use a signal generator instead of a power supply, or is the signal inserted into the circuit?

Single generators are for generating low level AC waveforms which are injected into the circuit at points of interest, typically the circuit input.

Power supplies generate regulated DC voltage(s) that power the circuit.

 

[TotalMadness]

Ok, thank you guys.