Table of Contents
Download PDF book 50 555 Circuits NE555 by Talkingelectronics, the 555 is everywhere, and it is one of the cheapest and most-rugged chips on the market.
It comes as a TTL 555 and will operate from 4v to about 16-18v. It costs from 20 cents (eBay) to $1.20 depending on the quantity and distributor. The circuitry inside the chip takes about 10mA – even when the output is not driving a load. This means it is not suitable for battery operation if the chip is to be powered ALL THE TIME.
About the integrated circuit NA555, NE555, SA555, SE555, NE556, SA556, SE556 and ICM7555
The 555 is also available as a CMOS chip (ICM7555 or ICL7555 or TLC555) and will operate from 2v to 18v and takes 60uA when the circuitry inside the chip is powered. The “7555” costs from 60 cents (eBay) to $2.00
We call the TTL version “555” and the CMOS version “7555.” This is called ELECTRONICS JARGON.
The 555 comes as a single timer in an 8-pin package or a dual timer (556) in a 14 pin package.
The 7555 comes as a single timer in an 8-pin package or a dual timer (7556) in a 14 pin package.
The 555 and 7555 are called TIMERS or Timer Chips. They contain about 28 transistors, and the only extra components you need are called TIMING COMPONENTS. This is an external resistor and capacitor. When a capacitor is connected to a voltage, it takes a period of time to charge. If a resistor is placed in series with the capacitor, the timing will increase. The chip detects the rising and falling voltage on the capacitor. When the voltage on the capacitor is 2/3 of the supply, the output goes LOW and when the voltage falls to 1/3, the output goes HIGH.
We can also do other things with the chip, such as “freezing” or halting its operation, or allowing it to produce a single HIGH-LOW on the output pin. This is called a “ONE-SHOT” or MONOSTABLE OPERATION.
When the chip produces an output frequency above 1 cycle per second, (1Hz), the circuit is called an OSCILLATOR and below one cycle per second, it is called a TIMER.
But the chip should not be called a “555 Timer,” as it has so many applications. That’s why we call it a “555.” (triple).
Circuits list in the book 555
| Active High Trigger Active Low Trigger Alarm Sounds (4) Amplifier using 555 Animated Display Automatic Curtain Closer Astable Multivibrator Bi-Coloured LED Bike Turning Signal Bi-Polar LED Driver Bi-Stable 555 Building the Circuits Car Tachometer Clark Zapper Clicks Uneven Continuity Tester Curtain Closer Dark Detector Dice Dice to 7-Segment Display Display – Animated Driving A Bi-Coloured LED Driving A Relay Driving White LEDs Fading LED Fastest 555 Oscillator Flashing Indicators Flashing Railroad Lights Flip Flop Four Alarm Sounds Function of each 555 pin H-Bridge H-Bridge with PWM Headlight Flasher – faulty circuit Hee Haw Siren High Frequency 555 Oscillator How to use the 555 Hysteresis Increasing Output Current Increasing Output Push-Pull Current Inverter 12v to 240v Inside the 555 Kitt Scanner Knight Rider Laser Ray Sound Latch Latch – using transistors LED Dice LED Dimmer LED FX Light Controlled Screamer Siren Light Detector Lights – Traffic Lights Low Frequency 555 Oscillator Machine Gun Mark-Space Ratio Memory Cell Mercury Switch Detector – faulty circuit Metal Detector Missing Pulse Detector – faulty circuit Model Railway Time Monostable 555 Morse Keyer Mosquito Repeller Motor Controller (stepper Motor) Motor PWM Multivibrator – Astable Music Box Negative Voltage Normally Closed Trigger One-Shot 555 |
Organ
Police Lights1,2,3 Police Siren Powering A Project Pulse Extender Pulser – 74c14 PWM Controller Railroad Lights (flashing) Railway Time Rain Alarm Ramp Generator Reaction Timer Game Replacing 556 with two 555’s Resistor Colour Codes Roulette Schmitt Trigger Screamer Siren – Light Controlled Servo Controller Servo Tester Simplest 555 Oscillator Siren 100dB Square Wave Oscillator Stepper Motor Controller Stun Gun Substituting a 555 – Part 1 Substituting a 555 – Part 2 Switch Debounce Tachometer TE555-1 Stepper Motor Controller Ticking Bomb Tilt Switch Touch Switch Touch ON-OFF Toy Organ Traffic Lights Traffic Lights – 4 way Transistor Tester Trigger Timer – 74c14 Turning Signal TV Remote Control Jammer Useless Machine Uneven Clicks Up/Down Fading LED Using the 555 VCO Voltage Doubler Wailing Siren Zapper (Dr Clark) Zener Diode Tester 2 Minute Timer – 74c14 3×3×3 Cube 4 Alarm Sounds 4 way Traffic Lights 10 Minute Timer – 74c14 12v to 240v Inverter 100dB Siren 555’s – a list of substitutes 555 Amplifier 555 Kit of Components 555 Pinout 555 Mistakes (No-No’s) 555 on 24v 555 VCO 556 Dual Timer |
- Download PDF Datasheet IC NE555 — Texas Instruments — NA555, NE555, SA555, SE555
- Download PDF Datasheet IC CI NE555, SA555, SE555- ST Microelectronics
- Download PDF Datasheet IC NE555, SA555, NA555 — Diodes
- Download PDF Datasheet IC NE556, SA556, e SE556
- Download PDF Datasheet IC PDF do CI ICM7555
I’m very interested in knowing simple electrical/electronics part of engineering even though I dont take any course pertaining this
Hello Phillip
The area of electronics allows to obtain knowledge being self-taught
thank you
It’s actually a great location and beautiful of all engineers
buen aporte
hii thanx aloot very good book
OK NOT BAD
OK VERY GOOD
OK GOOD
thanks