Idiot Electronics Question

[Regular Guy]

Resistor capacitor circuit.

Will the combo's they mention in the datasheet of a PIC run

by themselves? Without the PIC?

Just put a resistor and a capacitor on a breadboard.

We want to make a 'signal generator' for testing oscilloscopes.

Will R/C circuits run at khz frequencies like data sheet says?

200 khz and what not.

Thanks!
_________________
PIC Hobbyist

[temtronic]

no
yes
BTW, there's an example program, comes with compiler, that would be IDEAL as an oscilloscope test pattern generator....

[Ttelmah]

As Jay says to the first bit. No.

The key is there has to be gain added somewhere. Things like RC circuits
all introduce losses. Put a signal in, and it'll come out the other end
with some phase shift and reduction in the signal. To make it oscillate,
there has to be something to put back those losses. A simple transistor
amplifier, or a op-amp.
Have a look here are the basic RC oscillator:
[url]
https://www.electronics-tutorials.ws/oscillator/rc_oscillator.html
[/url]

The PIC RC oscillator, is a simple charge discharge oscillator, not a
sinusoidal oscillator. This can be done using a comparator (or even
easier an NE555). This won't give anything resembling a sine wave.