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  • 250W Computer supply china circuit

    2018-01-25 12:59:4459

    A friend of me inquires about power supply switching circuit. Which produce from the Peoples Republic of China model the circuit is all. Be the Chinese...

  • Music box versatile using IC M3481

    2018-01-25 12:56:1759

    This is a multi-purpose integrated music box that interesting, because an IC package. Is a simple and affordable. The main function of the circuit is t...

  • Full wave rectifier with an op amp IC

    2018-01-25 11:47:5659

    This circuit acts rectifier the ACV signal.This circuit usually requires two op-amp, but this circuit uses only one op-amp. The work is easy when a pos...

  • Siren sound loudly circuit using CD4046

    2018-01-25 11:32:2162

    This is a simple siren sound. Very noisy. ICs, Digital ICs are easy to use number CD4046 Inverter circuit. Operation of the circuit when the circuit is...

  • Buffer op-amp by IC LM741

    2018-01-25 11:27:4859

    The buffer circuit,Used for coupling two circuits togethe, such as the differential family of the IC or transistor thats not good impedance matching.Th...

  • Gate Tone Generator by IC 4011

    2018-01-25 11:27:0959

    Here is the tone generator circuit,it is small size. I use IC digital Cmos 4011 quad NAND gate. This will cause another NAND gate topulse oscillatorwhi...

  • What is Phase Tutorial

    2018-01-25 11:25:5059

    The generator at the power station which produces our AC mains rotates through 360 degrees to produce one cycle of the sine wave form which makes up th...

  • Police Siren (NE555)

    2018-01-25 11:15:3959

    Here is the circuit diagram of a police siren based on NE55 timer IC. The circuit uses two NE555 timers ICs and each of them are wired as astable multi...

  • MOSQUITO REPELLANT by IC 555, 4017, 4011

    2018-01-25 11:02:2961

    This is Circuit MOSQUITO REPELLANT. By High Frequency Sound. Use a electronics part ,easy to find and low cost. To See Circuit, have IC 555, 4017, 4011...

  • Infra Red Extender Mark 5

    2018-01-25 10:17:1862

    Description: The latest addition to my collection of Infra Red (IR) Repeater circuits. The Mark 5 is a much improved versionof the Mark 1 circuit and h...

  • Rectifier by zener diode

    2018-01-25 09:59:3660

    The bridge rectifier circuit uses diode 4 the the converter AC to DC, but this circuit uses zener diode as a rectifier instead of diode plain will be c...

  • Tan Timer electronic circuit diagram

    2018-01-25 09:57:0259

    Parts: R1_____________47K 1/4W Resistor R2______________1M 1/4W Resistor R3,R5_________120K 1/4W Resistors R4____________Photo resistor (any type) C1,C...

  • Intercommunication-intercom electronic circuit diagram

    2018-01-25 09:41:4459

    This is a great intercom circuit that can be used in many ways. It uses 22V to operate and maybe it will work at a lower voltage (you can try it). For ...

  • 10 Channel Graphic Equalizer by LA3600

    2018-01-25 09:25:3159

    In addition to using the LA3600 IC, wasthe 5 channel graphic equalizer. We can also be designed was the 10 Channel Graphic equalizer circuit. By connec...

  • Repeating Timer No.8

    2018-01-25 09:16:2259

    Description This timer will energize a relay for up to an hour or so. And it will do so repeatedly - at regular intervals. Notes This circuit energizes...

  • Feedback Tutorial

    2018-01-25 08:46:4859

    It is best if you read the page on thePHASEfirst. Feedback is when some of the output signal from a circuit is fed back to the input and combined with ...

  • Boost up voltage for relay by BC558

    2018-01-25 08:36:5659

    Using relay general the majority then to use power supply that have DC Voltage with the value volt that specify on relay. For relay work but , if , we ...

  • TDA2030

    2018-01-25 08:35:4259

    There are many instances where a very simple to build (and relatively cheap) power amplifier is needed. The TDA2030 is a single chip amplifier capable ...

  • Adjustable Regulator by TL431

    2018-01-25 08:05:1159

    This be simple Adjustable voltage regulator power supply circuit, at use integrated number circuit TL431. By from the circuit can fine volt 3V 30V, dep...

  • Tone Generator by 2N4891

    2018-01-25 07:00:1159

    This be Basic Tone Generator by UJT Transistor 2N4891 numbers. By it s can give with small-sized loudspeaker s have a voice electric loud bell moderate...

  • Tone Burst Generator by LM555

    2018-01-25 06:55:4059

    Friends take an interest try build Tone Burst Generator be simple is. Try this circuit like sure because useIC 7555, highly popular again. Assure that ...

  • External Interrupts handling in 8051

    2018-01-25 06:52:2859

    In this article, I would like to introduce you to the concept of interrupts, how interrupts work, vector address, interrupt priority and how to write a...

  • 7490 Decade Counter Tutorial

    2018-01-25 06:22:0359

    The 7490 integrated circuit counts the number of pulses arriving at its input. The number of pulses counted (up to 9) appears in binary form on four pi...

  • The Relay Sub Board electronic circuit diagram

    2018-01-25 05:49:5159

    Attach this board to the Simplified I/O Interface Board Use nine pieces of hookup wire (or a piece of ribbon cable) to connect corresponding points on ...

  • Infra Red Extender Mark 4A 36KHz

    2018-01-25 05:39:5059

    Description: An Infra Red wired Repeater circuit to control appliances from a remote location. Parts List: R1: 1k Resistor (1) R2: 3.3k Resistor (1) R3...

  • Supply Splitter with IC 741

    2018-01-25 05:25:4659

    Circuit Supply Splitter with IC 741 TIP41,TIP42 If you must modify a place power supply. usual to dual power supply positive,negative,GND(0V). I introd...

  • MILLIGAUSS METER

    2018-01-25 05:15:1459

    Description: The circuit of Fig.1 provides an easy yet reliable way to detect the intensity of a.c. (or e.l.f.) fields around the home or workplace. It...

  • Portable Mixer electronic circuit diagram

    2018-01-25 05:07:3159

    High-quality modular design9V Battery powered - Very low current drawing Design description: The target of this project was the design of a small porta...

  • Sound Effects Generator 2 - Circuit Tutorial

    2018-01-25 04:57:2459

    Description: This circuit uses the Holtek HT2884 IC to produce 8 different sound effects. Notes: All sound effects are generated internally by the HT28...

  • Add dimensional sound from 2ch to 4ch

    2018-01-25 04:53:3859

    This circuit can be used on Car audio stereo systems that only have front speakers only a single page. The circuit will increase the number of speakers...

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