We often marvel at the many things a 555 can do. But [Zafer Yildiz] shows us that it can even take the place of a PCB. You’ll see what we mean in the video below. The timer relay circuit is built ...

This light cum room freshener module offers two choices. In the first choice, the room freshener spray and a small LED light get activated for three to five seconds. In the second choice, where a ...

A few simple components are all it takes to create an over-temperature alarm. The circuit in Figure 1 requires only an ordinary negative-temperature-coefficient (NTC) thermistor, two common ICs, and a ...

The bipolar NE555 timer IC is widely used in inductorless dc-dc converters, most frequently in doubling and inverting converters. However, another very popular IC, the LM386 audio amplifier, may be a ...

Some design choices on manufacturing equipment really leave you scratching your head for a while, as recently happened to [Chris Cecil] when the belt on a reflow oven’s conveyer snapped. Although the ...

AUSTIN (KXAN) — Ross Chastain is a first-time NASCAR Cup Series winner, claiming the checkered flag with a frenetic finish at Circuit of the Americas in Austin. Twice a runner-up this year, Chastain ...

As a Berlin child, I was fascinated by the Berlin-Uhr on the Ku'damm. The clock shows the time through light fields of different values. The top two rows (red) of the Berlin-Uhr are the hours, the ...

We discussed the breadboard circuit in video #190 (https://youtu.be/wcRuVxXlEKw), but here we have the finished product, including the panelised PCB from JLCPCB ...