The 555 Timer IC is a popular 8-pin Integrated circuit chip that can be used in a variety of timing and pulse generation applications. The IC can operate in three different modes such as Astable, Monotstable and Bistable, because of which it can be adapted into many types of circuit designs like time delay circuits, pulse generation circuit, oscillator circuit and much more. The below list from Circuit Digest consists of a huge collection of 555 Timer circuits with neat circuit diagram and practical DIY hardware explanation enabling you build your own 555 Timer projects.
Sometimes, we might need an AC bulb flasher circuit that can blink a series of bulbs in a particular time interval for decorative purposes. By controlling the flashing time interval and sequence, we can make a series of bulbs look beautiful for outdoor decoration in Cafeteria, Restaurants, etc. or even used it for heavy Christmas light decoration, so here I have shared a…
In a previous article, I have shown you how you can build your own switched capacitor voltage converter circuit using the classic industry-standard LMC7660 IC. But oftentimes there are situations when you don't have a specific IC available or the cost of an additional IC is ruining the harmony of your BOM. And this is where our beloved 555 timer IC comes to rescue. That is…
Light fence circuit is used to detect the presence of any human or object in a particular area. The detecting range of Light Fence Circuit is about 1.5 to 3 meters. It’s quite simple to design the circuit using LDR and Op-amp. This portable circuit can work smoothly with a commonly available 9V battery and the alarm sound generated from the buzzer is loud enough to detect…
Capacitors seem all fine till you get to the point where a power supply fails or refuses to perform optimally. And if the problem is noise, there is a simple fix, you just add more capacitors. But that does not solve it. What could be wrong?
The problem arises from the naïve assumption that capacitors (to a large extent) are ‘ideal’ devices, while…
The situation is simple – you have a low voltage supply rail, say 3.3V, and you want to power something that needs 5V. This is a tough call, especially if batteries are involved. The only apparent way is a switch mode converter, more specifically a boost converter.
This is where we hit a roadblock – boost converters are inefficient at low powers,…
Most of electronics deals with Tracing Curves, be it the characteristic transfer curve for a feedback loop, a resistor’s straight VI line or a transistor’s collector voltage versus current curve.
These curves give us an intuitive understanding of how a device behaves in a circuit. An analytical approach might involve plugging in discrete…
At the outset, driving a motor might seem like an easy task – just hook the motor up to the appropriate voltage rail and it will start rotating. But this is not the perfect way to drive a motor, especially when there are other components involved in the circuit. Here, we will discuss one of the most commonly used and efficient ways to drive DC motors, the H-Bridge circuit.…
Frequency to voltage converter converts the frequencies or pulses to the proportional electrical output such as voltage or current. It is an important tool for electromechanical measurements where repeated events are occurring. So, when we provide a frequency across a frequency to voltage converter circuit, it will provide a proportional DC output. Here we are using KA331 IC…
When a signal goes through a sudden change from base value to higher value and again comes to base value from higher value after some time. It is called a Pulse signal.
In above image, the first waveform shows a single pulse where the signal is changing from 0 to 5v (low to high) and 5v to 0 (high to low) within a short…
In electronics, waveforms are mostly plotted against voltage and time. The frequency and amplitude of the signal can vary according to the circuit. There are many types of waveforms, like sine wave, square wave, triangular wave, ramp wave, sawtooth wave etc. We have already designed sine wave and square wave generator circuit. Now, in this tutorial we will show you, how to…
Different Electronic systems operate in different level of voltages. Most commonly the digital electronic systems like microcontrollers and microprocessors operate in 5V or 3.3V. Industrial Level Control devices like PLC, HMI etc. have an operating voltage of 12V, 24V etc. The loads (LED indicator) and sensors, that are used to interface with a PLC, also have a nominal…
Snubbers are the energy absorbing circuits used to smooth the voltage spikes caused due to the circuit’s inductance. Sometimes, due to the overcurrent, overvoltage and overheating the component gets fail. So, for the overcurrent protection of the circuit we use fuses at suitable locations and for overheating we use heat sinks or fans.
Snubber…
