Tone generator circuit using 555 timer Bird sound generator, Ambulance Siren Generator These are some circuit diagrams of the sound generators. Sounds are like Bird sound, Ambulance siren, Beep Horn, and other different types. Use 9 to 12v Dc supply and components value should be the same as suggested in the diagram because any …
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The following electronic circuit diagrams very Simple, useful, and can be made by any beginner. LED flasher circuit using transistor  Battery level indicator circuit diagram Mini Fm transmitter circuit up to 50M range contactless electric line tester detect the line when the sensor wire touched over the cover of wire overheat or temperature sensor Adjust …
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Smart relay switch for DC when a short circuit occurs, Automatic Switch OFF the supply and an indicator will also start to glow. This is just like an MCB used for AC. This switch is used for DC supply. This automatic Cut relay switch is very useful for damage protection to the circuit from …
Arduino remote control AC Dimmer The brightness can be controlled using the IR remote of TV, DVD, etc. Dimming Control system using MOC3021, BT136 Triac and a zero-crossing detector circuit based on the MCT2E optocoupler. Optocoupler provides complete isolation between the AC side and the DC controller side. So if any fault or short circuit …
LED chaser circuit 1. LED Running Effect Without IC Here is presenting a circuit diagram of LED chaser . The Main Advantage of this LED chaser is it does not require any ic or microcontroller. This Circuit is made using mainly NPN transistors and capacitors and some resistors. This LED chaser circuit produces a blinking …
Audio amplifier circuit diagram There are the following 3 types of best and easy Audio amplifier circuit diagram  simple amplifier circuit diagram Audio amplifier circuit diagram Audio amplifier circuit diagram  2 transistor audio amplifier
Bass booster circuit diagram This bass booster circuit is made using the quad op-amp ic LM324. This op-amp ic has 4 operational amplifiers, but in this circuit, only 2 op-amps are used. This circuit provides Low pass filter of input audio which produces a Low frequency of input and high frequency is blocked. Connect the …
Remote controlled AC Load With Arduino Without Relay Arduino remote control Here I am presenting a mini project of remote control switch for any AC appliance without Relay. A homemade Arduino Remote control switch is an interesting idea. Arduino Uno board is used here but you can use any Arduino board. Download Arduino Library Proteus …
3 LED flasher circuit using transistor Here is another type of LED flasher circuit but this circuit is also about the same as my previous led chaser, here is some change in this circuit. This is a Very Easy and beautiful LED chaser that is made using without any ic. only transistors, capacitors and resistors …
LED Flasher/Blinking Circuit diagram Using 555 timer This is a Popular and Simple LED Flasher circuit using one 555 timer ic and some other components. This circuit works on the principle of Astable Mode operation of 555 timer. Which produces a continuous Pulse wave at the output on pin 3. When the pulse signal …