DIRECT CURRENT How-To Videos & Articles

Follow these direct current-tagged tutorials to learn all about direct current with WonderHowTo's collection of free how-to videos and articles, like Drive a transistor with direct current, Get free electricity from a phone jack, and Use a digital multimeter on circuit boards.

You'll also find several great electronics tutorials in the Electronics category.

This video is made for beginners and all people interested in these matters. Here you see how to drive a NPN transistor (or a NPN ...more

C 4:49

Curated 1 year ago by rmansur | Comments 0

Learn how to get free electricity from your home telephone line just by watching this video. Save money on your power bill, and hack into ...more

A- 1:02

Curated 1 year ago by 5min | Comments 92

With this video "Tangent Tutorial," you'll learn how to use a multimeter for your electronic circuit board work. This video demonstrates ...more

A 28:50

Curated 1 year ago by tenebrism | Comments 3

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