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2. 555 timer IC - Wikipedia

   en.wikipedia.org/wiki/555_timer_IC

   555 timer IC. The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. It is one of the most popular timing ICs due to its flexibility and price. Derivatives provide two (556) or four (558) timing circuits in one package. [2]

3. File:555 Astable Diagram.svg - Wikipedia

   en.wikipedia.org/wiki/File:555_Astable_Diagram.svg

   File:555 Astable Diagram.svg. Size of this PNG preview of this SVG file: 275 × 250 pixels. Other resolutions: 264 × 240 pixels | 528 × 480 pixels | 845 × 768 pixels | 1,126 × 1,024 pixels | 2,253 × 2,048 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.

4. Schmitt trigger - Wikipedia

   en.wikipedia.org/wiki/Schmitt_trigger

   T and − T are the switching thresholds, and M and − M are the output voltage levels. In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a ...

5. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   Duty cycle is expressed in percent, 100% being fully on. When a digital signal is on half of the time and off the other half of the time, the digital signal has a duty cycle of 50% and resembles a "square" wave. When a digital signal spends more time in the on state than the off state, it has a duty cycle of >50%.

6. Duty cycle - Wikipedia

   en.wikipedia.org/wiki/Duty_cycle

   Duty cycle. A duty cycle or power cycle is the fraction of one period in which a signal or system is active. [1][2][3] Duty cycle is commonly expressed as a percentage or a ratio. A period is the time it takes for a signal to complete an on-and-off cycle. As a formula, a duty cycle (%) may be expressed as: Equally, a duty cycle (ratio) may be ...

7. Advanced Linear Devices - Wikipedia

   en.wikipedia.org/wiki/Advanced_Linear_Devices

   Advanced Linear Devices Incorporated, also known as ALD, is a semiconductor device design and manufacturing company based in Sunnyvale, California. The company develops and manufactures precision analog CMOS linear integrated circuits for industrial controls, instrumentation, computers, medical devices, automotive, and telecommunications products. t is best known for its redesign of the 555 ...