On Popcorn

I have received a suggestion that I should blog about popcorn.


The popcorn that I deal with in my day job is popcorn noise which is caused by imperfections in semiconductor devices. It was first noticed in simple point-contact diodes such as the cat-whisker-on-galena devices used as detectors in early crystal radio receivers. It also occurs in transistors. Popcorn noise appears as sudden and random shifts in a signal level. These shift can be on the order of several hundred microvolts.

Most semiconductors are screened for minimal popcorn noise during manufacturing.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s