| An electro-luminescent sheet (ELS) is capable of emitting an appreciable amount of very cool, white light. These devices come in a variety o...
Thomas Scarborough (13)
| Here is a random flashing LED circuit which is economical at just 1 mA while using a minimum number of parts. With two spare gates available...
| This circuit takes advantage of back-e.m.f. (electromotive force) to amplify the voltage across a piezo sounder. Ordinarily, IC1 would only...