How to Generate a Clock Signal with a 555 Timer -- The Learning Circuit 72

Matt — Wed, 19 Feb 2020 08:24:00 GMT

Current Revision posted to Documents by Matt on 2/19/2020 8:24:00 AM

How to Generate a Clock Signal with a 555 Timer

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

Karen has been digging into 555 timers for a bit now. In a previous video, she did an overview of the 3 different modes in which a 555 timer can be used. In this video, Karen goes into further detail about one of those modes: Astable. In astable mode, a 555 timer can be used as an oscillator where the output automatically switches between high and low at a consistent rate as long as the 555 timer is connected to power.This is often the most common use of a 555 timer as it can be used to create the clock signal for other ICs. Karen explains what is happening inside the 555 to make this work, as well as creating the circuit on a breadboard to show how it works in a practical example.

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
Breadboard, MCM 60 rows, ABS, 8.5mm, 165mm x 56mm	Multicomp	1	Buy NowBuy Now
LM555CN - Timer, Oscillator & Pulse Generator IC, TTL Compatible, Astable, Monostable, 4.5 V to 16 V, DIP-8	On Semiconductor	1	Buy NowBuy Now
Ceramic Disc Capacitor, 0.01 µF, 100 V, ± 20%, 5 mm	Vishay	1	Buy NowBuy Now
140 Pc. Jumper Wire Kit, 22 AWG, Solid, Assorted Lengths and Colors	Twin Industries	1	Buy NowBuy Now
Through Hole Resistor, 220 ohm, 400 mW, ± 1%	Vishay	1	Buy NowBuy Now
Through Hole Resistor, 1 kohm, 500 mW, ± 1%	TT ELECTRONICS / WELWYN	2	Buy NowBuy Now
Red LED, Through Hole, 5mm, 20 mA, 2.1 V	LED TECHNOLOGY	1	Buy NowBuy Now
Tactile Switch, 12mm, Yellow, Top Actuated, Through Hole, Round Button, 24 VDC, 50mA	Omron	1	Buy NowBuy Now
Tactile Switch, 12mm, Red, 12 VDC, 50mA	Multicomp	1	Buy NowBuy Now

Additional Parts:

Product Name
Desktop Power Supply

Tags: tlc, e14presents_makerkaren, tactile switch, the learning circuit, 555 timer, led

The Learning Circuit 72: How to Generate a Clock Signal with a 555 Timer

tariq.ahmad — Wed, 15 Jul 2020 13:36:02 GMT

Revision 1 posted to Documents by tariq.ahmad on 7/15/2020 1:36:02 PM