Mobile phone detector circuit This detects when any mobile phone active in this range. Active means when incoming, outgoing, SMS transmission, or audio/video transmission by mobile. This detects signals of an active mobile phone even in silent mode. This is useful in that places where the mobile phone is prohibited like Offices, Classroom, Hospitals, Exam […]
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Automatic Temperature controlled DC FAN Controller Circuit We use many electronic gadgets like power Amplifiers, SMPS, Inverters, and AC-DC converters, etc. These gadgets use ICs that generate more heat during operation and required any temperature controller for Cooling to control the heat for protecting the devices. This circuit is ideal to control the cooling fan
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DC FAN Speed Regulator Circuit DC FAN Motor Speed Controller Regulator Circuit Works ON Principle of Pulse Width Modulation (PWM) technique, By Using This Technique Controlling Of DC Motor Speed is very Smoothly And Noise Free. Introduction Of PWM Pulse Width Modulation, commonly known as PWM, is a powerful technique used in electronics to control
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Automatic Door Security Alarm System Introduction This is used to any Door or Gate to Detect Any human person or any animal pass across the gate. When Any Crosses the gate then Automatic alarm beeped for some duration and then after automatically stopped. So even any person or gateman or guard is not available at
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All About Resistor Introduction. What is a Resistor A resistor is the most common passive two-terminal component used in the electronics circuit. This device used in various circuits. Without a resistor, we can’t imagine any circuit. The resistor is a very important device to make a circuit. Any simple to the simple circuit we
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Method of Finding the value/Meaning of codes of capacitor • Ceramic disc capacitors have two to three-digit codes printed on them. • The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. • When the first two numbers are multiplied with the multiplier, the resulting value
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circuit diagram of Remote controlled switch project Image- electronicsforu.com • This is a schematic circuit diagram of a remote-controlled switch for home appliances. • TSOP1738 used in the circuit for detecting IR signals from the remote. • This circuit works with any infrared remote used for TV, DVD, USB player, etc. In this circuit there
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Remote Controlled Switch This is the very simple circuit diagram of the IR remote control switch. We use the normal switch in our daily life and after a long time used to this switching system, we can no more interested in that. This is a good solution for a unique and so interesting idea to
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555 Timer The 555 timer IC is one of the most versatile and widely used integrated circuits in electronics. It is a simple yet powerful component that can be used for timing, pulse generation, and oscillator applications. Whether you are a hobbyist, student, or professional engineer, understanding the working and applications of the 555 timer
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230v ac to 12v 1A dc and 5v 1A dc power supply circuit diagram ac to dc converter In many electronics projects, we see that there is a requirement of a fixed-voltage power supply, fixed means no fluctuation in voltage. The output of any circuit fully depends on input voltage supply and it should be
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Automatic Water level pump controller for submersible motor Water pump controller circuit will automatically stop the motor pump when the tank is full. Description. At many times when the water tank is empty, we start the motor for storing the water in the tank and get busy in other work. Then we forget to
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How to make 220v AC LED indicator Generally we have seen that there are all indicators in our house on the wall switch board are of neon bulb which is small in size and connects with 68k resistor in series. You can make an indicator that glows very nice and looking so cool using
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20w amplifier using ic TDA7240 The TDA7240A is a 20W bridge audio amplifier IC housed in a compact HEPTAWATT 7-pin package. The audio amplifier circuit shown here is based on the TDA7240 IC, which can deliver 20 watts of output power into a 4-ohm load. This amplifier requires minimal external components, making it simple
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16-way clap operated switch project Introduction You can Control your home appliances with the clap. A circuit with clap operated switch, without moving out of your position or without getting out of your bed. you just have to clap between the distance where is reachable the sound of clap in amount able of
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10w x 10w stereo amplifier circuit diagram using TDA2009 TDA2009 Stereo Audio Amplifier Circuit – Working, Connections, and Applications The TDA2009 is a high-performance dual-channel audio amplifier IC, commonly used in stereo amplifier circuits. This 10W+10W stereo amplifier provides a simple yet effective solution for boosting weak audio signals to drive 8-ohm speakers efficiently. Circuit
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44 w Stereo Amplifier Circuit for car TDA1553 Audio Amplifier IC – Features, Working, and Applications Introduction The TDA1553 is a 2 × 22W stereo amplifier IC specifically designed for car audio applications. It is a single-chip solution that requires minimal external components, making it ideal for compact and efficient amplifier circuits. The IC operates
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Multi-tone Musical alarm circuit IC UM3481 is an 8 song Melody Generator IC designed for the purpose of Melody generation in various gadgets. It is widely used in Doorbells, Alarm systems, Reverse horns, Toys, Clocks, and Timers etc. This circuit provides 8 tones. This multi-tone doorbell circuit produces 8 types of musical tone. You get
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Remote controlled switch for Appliance A switch that is place in your hand at bed, this is controlled wireless to operate an appliance. Which is so unique for whose who use conventional switch to switch or off his appliance at your home. A remote-controlled switch that can ON or OFF any appliance using a TV,
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Long-Range FM Transmitter An FM transmitter can cover the maximum distance, we always try to get the maximum range with maximum power output. There are various different types of FM transmitter circuits available on different online websites. but not all circuits have the capacity to cover more than the 100- 200 meter site range. Here
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Long Range FM Transmitter Circuit The FM transmitter circuits generate the output power depending on the power amplifier. If any transmitter circuit has to consist of the Rf amplifier stage, and oscillator stage then the output power of that ckt provides a good power signal. The transmitter circuit described here with an extra RF power
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High Quality 4-Stage 1 W Homemade FM Transmitter Circuit Diagram How to make FM transmitter at home This is a very good quality FM transmitter circuit built using four radio frequency stages: a VHF oscillator built using transistor BF494 (T1), a preamplifier stage built around transistor BF200 (T2), a driver built around transistor 2N2219 (T3),
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Small And Long Range Fm Transmitter circuit Fm transmitter is always an interesting circuit idea. This circuit provides the FM frequency signal of about 80 to 115 MHz. You can receive the signal of this transmitter on a receiver at a distance of around about 200 meters. This is a small range portable FM transmitter
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