Aug 29, 2015 · The 555 timer IC has been around now for quite some time and the list of potential uses for this device appears to be endless. This article contains a few examples of circuits that you might incorporate in your next design.

Apr 30, 2011 · 555 Timer PRO from Schematica.com provides an array of design wizards, circuit blocks and information panels that facilitate the use of the 555 timer in projects. 555 Timer PRO and 555 Timer PRO EX (extended) are combined in the same demo download.

Jul 17, 2016 · Explore Our Collection Of 555 Timer Circuits And Projects. These Are Easy To Build Circuits For Beginners and Advanced Engineers. Visit To Learn More.

Oct 20, 2012 · Here is a simple oscillator circuit that varies the duty cycle over a wide range without affecting the frequency. It is a variation of the simple 555 astable oscillator.

Jan 24, 2010 · Here is a 1Hz pulse/frequency generator using the popular timer IC 555 which is wired as an Astable Multivibrator. The output pulses can be indicated visually by the LED.

Jun 21, 2013 · The circuit uses an inverted 555 oscillator that is coupled to an ON Semiconductor BU323Z Darlington transistor (350V, 10A) that drives a conventional inductive discharge ignition coil.

Mar 2, 2013 · This is a small size led flasher built with the 555 timer IC that is powered from 2 x 1.5V batteries. The circuit can be used as a flashing metronome, dark room timer, memo-reminder or other similar applications.

The following session documents the design and fabrication of a TTL Pulse Generator for this driver circuitry, with emphasis placed on design considerations and application techniques. First segment of the pulse generator is a classic astable multivibrator circuit built around the ubiquitous NE555 timer chip (IC1).

Nov 15, 2012 · To make it compatible with TTL logic levels, simply add the two resistors that are shown in the schematic. This loads down the internal divider to a lower voltage.

Jul 4, 2012 · This simple LED driver circuit allows us to drive up to seven LEDs by using a single NiMH (Nickel Metal Hydride) AA cell. The circuit produces voltage pulses at a much higher level than the input supply voltage by pulsing the 220 uH inductor.