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  • VGA to BNC Adapter

    2018-02-27 04:07:3562

    There are monitors which only have three BNC inputs and which use composite synchronisation (‘sync on green’). This circuit has been designed with ...

  • 144MHz Radio beacon circuit

    2018-02-27 04:00:4967

    Thetransmitter on 2 meters 144 MHzwas designed mainly for use by radio amateurs asradio beaconand to this end, it produces a signal of good quality and...

  • Homemade PCB

    2018-02-27 03:37:1662

    Printed circuit boardor PCB is one of the important things to assemble an electronic circuit. It provides support to the components and makes electrica...

  • Resistors and types of resistors

    2018-02-27 03:31:3062

    Whats is a resistance? The property of a substance, which oppses the flow of an electric current through it is called a resistance. Its is measured in ...

  • Electronic GateKeeper circuit

    2018-02-27 03:23:1061

    This circuit can do the job of aGatekeeperand intimates you if someone passes through the gate. The alarm can be an AC bell or a Lamp. The alarm turns ...

  • Scmitt Trigger circuit using NE 555

    2018-02-27 03:12:1561

    Description. Apart from the timing functions ,the two comparators of the 555 timer can be used independently for other applications.One example is a Sc...

  • Electronic toss circuit

    2018-02-27 02:36:2968

    Description. The circuit given here can be used for tossing head or tail. There are many games in which a tossing is required to start and this circuit...

  • Blown fuse indicator circuit

    2018-02-27 02:06:2461

    Description. Here is a simple scheme for adding a blown fuse indicator to your existing power supply circuit. This is done by just adding a resistor an...

  • VOLTAGE DOUBLER Circuit

    2018-02-27 01:40:3162

    VOLTAGE DOUBLER Circuit A voltage higher than the supply can be created by a Charge-Pump circuit created with a 555, diodes and capacitors as shown in ...

  • Optimizing the Triacs

    2018-02-27 00:18:0361

    Modern power control systems utilize electronic devices like Thyristors for power switching, phase control, chopper etc. These devices also find applic...

  • TSOP 1738 Photo module Design notes

    2018-02-27 00:08:0169

    TSOP 17… Series Photomodules are excellent Infrared sensors for remote control applications. These IR sensors are designed for improved shielding aga...

  • Musical horn circuit.

    2018-02-26 23:58:0964

    ?Description. Here is a simple circuit diagram of a simple musical horn using two NE555 ICs. Two ICs are wired as astable mutivibrators. The output of ...

  • Nokia 3310 service guide manual

    2018-02-26 23:56:5562

    Nokia 3310 / 3310 repair hints download Nokia 3310 disassembly and component handling download Another repair hints for Nokia 3310 download Service sof...

  • 3 Input mic mixer circuit

    2018-02-26 23:04:0361

    Description. Here is a simple 3 input mic mixer circuit using the popular uA 741 ICs. Four 741s are used here.IC1, IC2, IC3 are used as preamplifiers. ...

  • AM receiver circuit

    2018-02-26 22:37:0262

    Description. Here is a low cost AM receiver circuit that can be tuned from around 550 to 1100 KHz. Three transistors are used in this project. The tran...

  • 12V

    2018-02-26 21:56:5360

    Description. This is a simple approach to obtain a 12V and 5V DC power supply using a single circuit. The circuit uses two ICs 7812(IC1) and 7805 (IC2)...

  • Portable Solar Lantern

    2018-02-26 21:55:4662

    This portable solar lantern circuit uses 6 volt/5 watt solar panels are now widely available. With the help of such a photo-voltaic panel we can constr...

  • Electronic Potentiometer circuit

    2018-02-26 21:05:1664

    This is a digitally controllable electronic potentiometer. The heart of the circuit is a 16 channel analog multiplexer. Controlled by the BCD value at ...

  • MUSIC BOX Circuit

    2018-02-26 21:04:5861

    MUSIC BOX Circuit This circuit produces 10 different tones and by selecting suitable values to change the voltage on pin 5, the result can be quite ple...

  • SIREN 100dB Circuit

    2018-02-26 20:39:3767

    SIREN 100dB Circuit This is a very loud siren and if two or more piezo's are located in a room, the burglar does not know where the sound is coming fro...

  • RF Probe Circuit

    2018-02-26 20:24:5060

    A RF probe is a circuit of test equipment that converts a high frequency signal to a DC voltage. In this way it is very easy to measure RF voltages for...

  • Drill speed regulator circuit

    2018-02-26 20:16:0163

    A mini-drill machine is always needed in drilling the printed circuit board. It is usually powered by batteries that limit the drills capacity. Using a...

  • Useful keyboard shortcuts and html code

    2018-02-26 19:52:0160

    Here we will post some useful keyboard shortcuts that we can use in electronics. I will start and hope that you will participate by writing a comment i...

  • Quartz 1Hz Timebase

    2018-02-26 19:46:4060

    Here is one basic circuit of a simple but accurate 1Hz timebase generator built around a standard Quartz clock circuit board. Just lift the clock PCB f...

  • Victorinox is the most secure memory stick?

    2018-02-26 19:40:4862

    Victorinox has launched a memory stick design which is, says the company, the most secure of its kind available to the public. The Victorinox memory st...

  • Sony Vaio-VGN CR36 Notebook

    2018-02-26 19:27:2160

    SONY-The name speaks Quality and VAIO speaks Brand. I am using this notebook for the last one year and am more than satisfied with its performance. Son...

  • SCREAMER Circuit

    2018-02-26 18:54:3160

    SCREAMER Circuit This circuit will produce an ear-piercing scream, depending on the amount of light being detected by the Light Dependent Resistor. Rep...

  • Anxiety Symptoms Generator

    2018-02-26 18:53:5661

    Do you want to feel the anxiety symptoms or get rid of your guests? This circuit can be helpful when you want to get rid of your guests (visitors) or f...

  • Coffee thermometer circuit

    2018-02-26 18:48:3862

    Why measure the temperature of the coffee? Well, coffee taste depends on two things. First, how strong the coffee is and second, how hot it is. The sec...

  • Optoelectronic devices

    2018-02-26 18:47:0761

    General Introduction to Opto electronic devices Optoelectronics is the technology that combines optics and electronics and the devices based on this te...

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