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Description: An RC circuit is used to introduce time delay in circuits. A combination of resistor and capacitor gives a time constant. The following circuit shows a basic RC circuit. In the figure C1(100uF) works as a storage capacitor. When you press the switch, the capacitor charges quickly and provides base current to the transistor…
Description: This circuit can be used for testing your TV, DVD, VCD, etc. remote control. This is the fundamental module for making infrared based object counter. This project has been derived from “Remote tester project” . 🛠️ Dive into our collection of DIY Kits, 🔊 Audio Amplifiers, Digital Scoreboards, FM transmitters, and more! 🎶 Explore…
MAKE A SIMPLE DIGITAL OBJECT COUNTER WITH THIS MODULE- CLICK HERE Description: It’s a simple counter module. In the example, we have used 4026B and common cathode seven segment display. In place of 4026B, you can also use 7490 and 7447.
Description: This versatile dark sensor is made up of two transistors. It is a versatile module, because you can use it for testing several electronic components, such as, relay, reed switch, light dependent resistor(LDR), electret microphone, phototransistor, photodiode, etc. Besides, you can use this module for making simple clap switch, light operated switch, water level…
Description: A multivibrator has identical components(capacitors, transistors and resistors) arranged on the left and right hand sides that can be used to implement a variety of simple two-state systems such as oscillators, timers and flip-flops. In a multivibrator circuit, increasing the value of the two electrolytic capacitors increases the time each LED remains on/off.
Description: UM66 or BT66 is a musical IC. The following circuit generates a melody using UM66. This module can be used in a number of projects like, light operated musical bell, remote bell, infrared based music transmitter and receiver, etc.
Description: The following circuit works as a toggle switch. The circuit has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. The project has been derived from buildcircuit.com. You can read the original post from this link: http://www.buildcircuit.com/toggle-switch/
Get project details: http://www.buildcircuit.com/4-in-1-diy-kit-dark-sensor-latch-circuit-astable-multivibrator-and-clap-switch/
Description: You can make an up counter using a counter module and a multivibrator module. First make a simple multivibrator, then make a counter and then combine them.
Description: Astable mode of 555 timer is used to generate pulses at regular interval. READ ABOUT ASTABLE MODE. The following schematic has been taken from buildcircuit.com. The following circuit can work as a music generator, Infrared transmitter and LED blinker depending upon the values of R1, R2 and C1.
Description: LM358 is also one of the types of operational amplifier. LM358 consists of two independent, high-gain, frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages. This module can also be used for testing an LDR, a phototransistor and a photodiode. You just need to replace an LDR with…
Description: In the monostable mode, the 555 works as a “one-shot” pulse generator. Other applications of monostable mode include timers, pulse-width modulation (PWM), missing pulse detection, touch switches, frequency divider, capacitance measurement, bouncefree switches and so on.
All of us know that NE555(or other versions) is a versatile IC for building big and small projects. Recently, I found some free simulators that would be very useful for electronics beginners. Please go the links I have given on this page and download those applications for FREE. You may also find something more useful…
Here’s a simple light activated police siren using light dependent resistor and NE555 timer. Before you make this project, I would recommend you to make the following projects. a. Light sensor and dark sensor I strongly recommend you to make a dark sensor and light sensor using LDR and understand clearly how it works. b….
An electret is a permanently charged dielectric. It is made by heating a ceramic material, placing it in a magnetic field then allowing it to cool while still in the magnetic field. It is the electrostatic equivalent of a permanent magnet. In the electret microphone a slice of this material is used as a part…
HOW TO USE AN ELECTRET MIC Read about 4- in -1 DIY KIT: http://www.buildcircuit.com/4-in-1-diy-kit-dark-sensor-latch-circuit-astable-multivibrator-and-clap-switch/
This flasher circuit is bit different from other flasher circuits published on buildcircuit.com.
This is a simple RC circuit using thyristor. You might have done similar projects using transistors. Let me provide you some of my previous RC projects: a. Basic RC project You can make several projects with this module, for example, Remote tester, object counter, etc.
Here’s a simple experiment with LDR and CD4093. This is just a modification of a previous project “dark sensor using 2 transistors”. In this project, the CD4093 is configured in such a way that whenever you block light falling on LDR, the circuit starts blinking the LED D1. The flasher circuit does not get power…
