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Meeasure capacitance wiht oscilloscope

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Adrian_Arg.:
Hello friends, I have a problem, I have watched some videos of how to measure the capacity, I follow the steps of the videos, function generator, square wave frequency 1Khz, amplitude 5v and in other cases amplitude 1v, components a resistor of 1000 ohm, and The capacitor to measure. I perform the steps you show, I don't get the results, I check the values with other meters and these are correct. what am I doing wrong.

in spanish
Hola amigos, tengo un problema, he mirado unos videos de como medir la capacidad, sigo los pasos de los videos, generador de funciones, onda cuadrada frecuencia 1Khz, amplitud 5v y en otros casos amplitud 1v, componentes un resistor de 1000 ohm, y el capacitor a medir. realizo los pasos que muestras, no consigo los resultados, compruebo los valores con otros medidores y estos estan correctos. que estoy haciendo mal. 

capacitor 222 K (2.0nf)


capacitor 104



StillTrying:
I make the first one 22nF, and the second 470nF, if they're out are you sure the 1k is 1k. :)

Wimberleytech:

--- Quote from: StillTrying on February 11, 2020, 05:39:34 pm ---I make the first one 22nF, and the second 470nF, if they're out are you sure the 1k is 1k. :)

--- End quote ---

I also calculated 22nF on the first one.

Adrian_Arg.:
Thank you for answering, this is the case with many, some good and others are not even close, the controls with two meters and are almost in measure. I'm missing something  :-//

in spanish

gracias por contestar, asi me pasa con muchos, algunos bien y otros ni se aproximan, los controlos con dos medidores y estan casi en la medida. de algo me estoy perdiendo  :-//

StillTrying:
Don't bother with the triangular waveform for now, just use the 0% to 63%
I use the fine Y control to make the waveform exactly 6 Divs high, one of the Divs is then = 66% and 1/5 div below that Div is = 63%.
Then Cap value = time(0% to 63%) / resistance  should give a quite close cap. value result.

It has to be the 1k being 10k, are you reading a 4 colour band resistor as a 3 band.

No te molestes con la forma de onda triangular por ahora, solo usa el 0% al 63%
Uso el fino control Y para hacer que la forma de onda tenga exactamente 6 Divs de alto, uno de los Divs es entonces = 66% y 1/5 div por debajo de ese Div es = 63%.
Entonces el valor de Cap = tiempo (0% a 63%) / resistencia  debería dar un límite bastante cercano. resultado del valor

Tiene que ser la 1k siendo 10k, Estás leyendo una resistencia de banda de 4 colores como una banda de 3?

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