Why is the 555 timer IC so popular?
The 555 timer integrated circuit (IC) has been a mainstay in the electronics world since its invention in 1971 by Hans Camenzind. Its popularity has endured for decades, and it continues to be widely...
Category: 555 circuits
555 Timer IC Viva Interview Questions and Answers
What is a 555 IC? The 555 IC is a highly stable device that can be used for generating accurate time delays or oscillations. The mode of operations and desired outputs can be obtained...
555 Multivibrator Circuits Tutorial – Astable, Monostable, Bistable
555 Timer IC IC 555 timer IC is one of the most popular integrated circuit chip used for a variety of applications such as astable, monostable, bistable multivibrators, timer circuits, oscillators, PWM (Pulse Width Modulation), PPM...
Infrared burglar alarm using IC 555 circuit diagram
This infrared burglar alarm can use at doors, entries, etc. To alerts us, when somebody crosses through the IR beam. As the IR beams are invisible to human eyes, the circuit can work as a hidden security device. To...
LED Flasher Circuits Using 555 Timer IC
IC 555 Simple LED Flasher An LED flasher circuit can be used as an LED blinker, vehicle indicator light, signal flashlight, etc. A simple blinking circuit is basically a circuit to continuously ON and...
Power supply failure indicator alarm circuit using NE555 IC
Here the circuit for a power failure indicator, which can be used along with any other device to detect a power outage. The circuit uses an external 12V DC for checking the presence of a...
Voltage controlled oscillator circuit – VCO using 555
A Voltage controlled oscillator (VCO) circuit varies its frequency of the oscillation with respect to the externally applied voltage. The VCO circuit can obtain a linear variation of oscillation in relation to the input voltage. The...
Auto power cut off timer circuit
An automatic timer switch turns OFF a load itself after a fixed period of time. The circuit will be useful for various devices which we forget to turn OFF such as light, alarm, indicator circuits,...
Vibration sensor alarm circuit diagram
The circuit can be used as an intrusion detector alarm which can be simply placed on doors, floors or any surface where any vibration or pressure is generated during any intrusive actions. This burglar alarm...