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555 Timer ic Tutorial

555 Timer ic Tutorial

555 Timer   This is very popular and most common using ic used for various purposes in the electronics area.  555 timer ic is widely used in many electronics circuits for generating pulses, timer/ delay,  for oscillation, tone generator, led light flasher, multivibrator, etc. This ic especially designed to accurately produce the required output waveform with the requirement of just a […]

LED Power indicator for 220v AC mains

LED Power indicator for 220v AC mains

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 LED and  make LED indicator […]

How to make 20w Audio Amplifier

How to make 20w Audio Amplifier

20w amplifier using ic TDA7240    The TDA7240A is a 20W bridge audio amplifier IC . COMPACT HEPTAWATT PACKAGE in 7 pin packing. The audio amplifier shown here is based on the TDA7240 IC . The ic TDA 7240 is an audio amplifier IC that can deliver 20 watts of audio output power into a 4 ohm load. The circuit of audio amplifier using […]

10w x 10w stereo amplifier circuit diagram using TDA2009

10w x 10w stereo amplifier circuit diagram using TDA2009

10w x 10w stereo amplifier circuit diagram using TDA2009 IC TDA2009A is class AB dual Hi-Fi  powerful Audio power amplifier assembled in Multiwatt  package, especially designed for high-quality stereo applications as Hi-Fi and music centers. This ic has the following specification •  HIGH OUTPUT POWER (2 x 10W) •  HIGH CURRENT CAPABILITY (UP TO 3.5A) •  AC SHORT CIRCUIT PROTECTION •  THERMAL OVERLOAD […]

LM386 Audio Amplifier

LM386 Audio Amplifier

LM386 Audio Amplifier Circuit  In this project, i am showing you how to build LM386 Audio Amplifier Circuit. This is a very low cost and easy to make and can power any speaker. As its cost and fewer components required and as the size of the circuit the output sound is loud and enough for small projects and medium power […]

Multitone Doorbell Alarm

Multitone Doorbell Alarm

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 twelve popular tones in sequences […]

5 KM Long range FM transmitter

5 KM Long range FM transmitter

Long Range FM Transmitter A FM transmitter can cover maximum distance,  we always try to get the maximum range with maximum power output . there are various different types of fm transmitters circuits available in on the different online websites . but not all circuits are capacity to cover more than 100- 200 meter site range. Here showing a circuit […]

Long Range FM transmitter Circuit

Long Range FM transmitter Circuit

Long Range FM Transmitter Circuit The FM transmitter circuits generate the output power depending on the power amplifier. If any transmitter circuit has to consists of the Rf amplifier stage, oscillator stage then the output power of that ckt provides a good power signal. The transmitter circuit described here with an extra RF power amplifier stage increases the power output […]

Homemade Mini FM Radio Station Transmitter Circuit

Homemade Mini FM Radio Station Transmitter Circuit

 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: VHF oscillator built using transistor BF494 (T1), a preamplifier stage built around transistor BF200 (T2), a driver built around transistor 2N2219 (T3) and a power amplifier built […]

small FM transmitter

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 circuit that requires very few […]

Simple FM transmitter Circuit

Simple FM transmitter Circuit

 Simple FM transmitter Circuit This is a circuit diagram of the FM transmitter which constructed very easily. This FM Transmitter circuit needs very less components. This circuit is based on two NPN transistors of 2N2222 which is a low-power amplifier. At the first transistor stage, the input signal is preamplified and then the transistor T2 will Amplify the signal as […]

Long Range 1W FM Transmitter

Long Range 1W FM Transmitter

  Homemade Long Range 1 W FM Radio Transmitter circuit A transmitter circuit that produces frequencies between 88 to 108 MHZ . should good in quality in respect of good transmitting capability With a good area covering.  This FM transmitter can cover up to 5 km area with stable frequency quality. The reason of the use of voltage regulator 7809 […]