I am looking to make a circuit from popsci.com called the pocket theremin. It is simply a free-running astable multivibrator with a frequency divider.
It requires a .01uf cap on the trigger of the astable, does this have to be an electrolytic or is there another technology that would do, it is just that I don't know if it needs to have a polarity. I think the symbol used says yes but a lot of the circuits online simply show a non-polar capacitor. They could all be wrong?
I am finding it difficult tracking down such a thing in through-hole devices and I am not sure about surface mounted devices.
Whole article here
It requires a .01uf cap on the trigger of the astable, does this have to be an electrolytic or is there another technology that would do, it is just that I don't know if it needs to have a polarity. I think the symbol used says yes but a lot of the circuits online simply show a non-polar capacitor. They could all be wrong?
I am finding it difficult tracking down such a thing in through-hole devices and I am not sure about surface mounted devices.
Whole article here