Electronics, embedded, microcontroller, pic, projects, hobby circuits, circuit, blog, transistor, technology
CD4017 Decade Counter with 10 Decoded Outputs
The CD4017 is the one of the most popular Decade Counter (Divided by 10 Counter). It is a 5 Stage Divide by 10 Johnson Counter with 10 Decoded outputs. It has a wide supply voltage range from 3V to 15V and is compatible with TTL. It has a medium speed of operation, typically 5Mhz. Its applications includes industrial electronics, remote metering, automotive, medical electronics, instrumentation and alarm systems.
CD4017 Pin Diagram
CD4017 Pin Diagram The above diagram shows the pin out of...
Carbon Nanotubes to Replace Silicon in Computer Chips
A new technique to produce Carbon Nanotubes massively have developed by a group of researchers at IBM including one Indian. The previous experimental results from IBM researches indicated that Carbon Nanotube Transistors can offer better performance over Silicon at sub 10 nm lengths. The team also revealed that they have developed a Carbon Chip made using Nano-sized tubes of carbon with more than 10,000 transistors. Carbon Nanotubes are formed by rolling single atomic sheets of carbon in the form of a tube as shown...
Astable Multivibrator using 555 Timer
An Astable Multivibrator is an oscillator circuit that continuously produces rectangular wave without the aid of external triggering. So Astable Multivibrator is also known as Free Running Multivibrator. I have already posted about Astable Multivibrator using Transistors. Astable Multivibrator using 555 Timer is very simple, easy to design, very stable and low cost. It can be used for timing from microseconds to hours. Due to these reasons 555 has a large number of applications and it is a popular IC...
Astable Multivibrator using Transistors
An Astable Multivibrator or a Free Running Multivibrator is the multivibrator which has no stable states. Its output oscillates continuously between its two unstable states without the aid of external triggering. The time period of each states are determined by Resistor Capacitor ( RC ) time constant.
Astable Multivibrator using Transistors - Circuit
Astable Multivibrator Using Transistors In the above diagram we can find two transistors which is wired as a switch. Please do read the article Transistor as A Switch....
Transistor as a Switch
We all know that a transistor has 4 regions of operation, in which Active, Cutoff and Saturation are commonly used. A transistor works in active region when worked as an Amplifier. When a transistor works as a Switch it works in Cutoff and Saturation Regions. In the Cutoff State both Emitter Base Junction and Collector Base junctions are reverse biased. But in saturation region both junctions are forward biased. Switch is a very useful and important application of transistors. In most...
Ultrasonic Sensors
Ultrasonic Sensors are widely used for non-contact proximity, presence and distance measuring applications. These devices work on a similar principle of sonar or radar which evaluates the target by interpreting the echo from sound or radio waves. It emits a short high frequency sound waves and evaluates echo which is reflected back from the target. Sensors uses the time interval between sending the sound waves and receiving the echo to determine the distance of target. Most of the ultrasonic sensors are equipped with temperature compensation circuit to avoid...
555 Timer IC
The 555 Timer is the one of the most versatile linear hybrid Integrated Circuit (IC) which is used in variety of pulse generation, timer and oscillator applications. In 1972, Signetics Corporation first introduced this device as the SE/NE 555. 555 Timer Now a days it is manufactured by many companies in bipolar and in low power CMOS. It is widely used in electronics circuits as it is very simple and cheap method to produce accurate and highly stable time delays. It can be used for...
