The 555 Design Contest shook a whole bunch of really creative circuits out of the trees, hence the 555-heavy content lately. While not technically part of the contest, [esalazar] wanted to know wha… ...

Each sub-module that makes up the 555 — comparators, flip-flop, and amplifier — are made from salvaged discrete parts in actual breadboard fashion, soldered to brass nails hammered into wood.

Use a 555 timer for power-on-reset that you find out does not really work because the 555 is, at its heart, a digital chip, and then the entire design cannot be shipped and all the bosses hate you.

Used in a variety of timer, pulse generation, and oscillator applications, the 555 was designed in 1971 by Hans Camenzind. A favorite for many engineers, the 555 is still in widespread use due to its ...

The finished product is a 30 times larger model of a 555 timer chip and is quite the accurate rendering. No word yet if other chips will receive the same treatment when the situation calls for a ...

He used a 555 timer that outputs a clock to the LEDs on the biz card, and placing a nine-volt battery on the terminals sets off the mini light show. See for yourself in the video below.

A close look at the circuit reveals that it consists of a discrete D-type flip-flop formed by NAND gates U1a-U1c. The setup delay of the LS series gates is around 10 ns. This causes the settling ...

The timer, IC1, functions as a resettable astable multivibrator where R1, R2, and C2 are the timing components. When the supply voltage, V S, is first applied, D1 conducts and reservoir capacitor ...