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  • How to build Room Noise Detector

    2018-11-10 14:15:3360

    One LED monitors three levels: 50, 70 85 dB Useful to detect too noisy environments Circuit diagram Parts: R1 10K 1/4W ResistorR2,R3 22K 1/4W Resistors...

  • How to build Nocturnal Animals Whisker

    2018-11-10 13:47:1359

    A low-rate flashing lamp drives away undesired visitors Automatic on-off operation Circuit diagram Parts: R1 100K 1/4W ResistorR2 2M2 1/4W ResistorR3 1...

  • Triple Stroboscope Circuit

    2018-11-10 13:19:5960

    Triple Stroboscope Circuit Circuit diagram This circuit enables observation of movement between other stroboscopes. Generation of rectangular signal is...

  • Lie detector electronic project circuit design using transis

    2018-11-10 12:17:1560

    Sensors This lie detector electronic project is designed using few common electronic parts. This lie detector can test a person whose status is modifie...

  • How to build Live-line Detector

    2018-11-10 12:06:5359

    Detects the presence of a live mains conductor Minimum parts counting Circuit diagram Parts: C1 100nF 63V Polyester or Ceramic CapacitorD1 Red LED (any...

  • Antenna selector circuit diagram using PIN diodes

    2018-11-10 11:54:1559

    Radio Circuits This antenna selector circuit diagram is designed using common electronic components and is very useful when are used many external ante...

  • How to build Electronic Torricelli Barometer

    2018-11-10 11:42:0860

    Circuit diagram: Description Although it does not have the same charm as real mercury barometers with long glass tubes on pieces of carved and polished...

  • PCB123 Printed Circuit Design Software

    2018-11-10 10:37:3559

    PCB Layout PCB123 is a printed circuit board designsoftware provided and designed by Sunstone and it can be used for free . In the old version PCB123 h...

  • TLC272 Proximity detector circuit

    2018-11-10 10:01:3860

    Sensors This proximity detector circuit is designed using a temperature sensor and TLC272 op amp. The temperature sensor can react to any heat generate...

  • MC3335P 80m SSB receiver electronic project

    2018-11-10 09:23:4060

    Radio Circuits Using the MC3335P low power narrow band FM receiver can be designed a very simple 80m SSB receiver electronic project circuit using few ...

  • How to build Rain Detector

    2018-11-10 09:19:2059

    Description This circuit uses a sensor made of a small piece of etched PC board and a simple SCR circuit to detect rain and sound a buzzer. The SCR cou...

  • How to build Cmos 4017 Sequential Timer

    2018-11-10 08:38:2759

    Description This circuit uses a Cmos 4017 decade counter to create a sequence of four separate events. The number of events in the sequence may be incr...

  • Qucs Quite Universal Circuit Simulator

    2018-11-10 08:36:2460

    SPICE software Qucs (speak: kju:ks) is a circuit simulator with graphical user interface designed by Michael Margraf and distributed as a free software...

  • How to build Plant Watering Watcher Circuit Schematic

    2018-11-10 08:23:1760

    Circuit diagram: Description This circuit is intended to signal when a plant needs water. A LED flashes at a low rate when the ground in the flower-pot...

  • ELECTRONIC RELAY

    2018-11-10 08:14:3860

    In some applications where you require speed of operation and no contact bouncing, you may find this circuit helpful. This is really the implementation...

  • How to build Ignition Coil Buzz Box

    2018-11-10 07:21:5559

    Description Here's a circuit to create a buzzcoil using a standard automotive ignition coil. A 556 dual timer is used to establish the frequency and du...

  • How to build Op-Amp Booster Designs - PDF

    2018-11-10 07:04:1260

    Description Although modern integrated circuit operational amplifiers ease linear circuit design, IC processing limits amplifier output power. Many app...

  • Shortwave radio receiver electronic project based on 2N2222

    2018-11-10 06:48:3660

    Radio Circuits This shortwave radio receiver electronic project is based on 2N2222 transistors and has an operating frequency range between 6 and 17 Mh...

  • Sound Effects Generator Circuit

    2018-11-10 04:47:4159

    Sound Effects Generator Circuit Description: This circuit uses a UM3561 IC to produce four different sound effects. Circuit diagram Notes: Nothing too ...

  • Electronic thermometer using lm723 and common electronic par

    2018-11-10 04:44:0759

    Sensors A very simple electronic thermometer can be designed using electronic diagram below. Thermometer displays temperature radiator not only on two ...

  • LM3914 LM35 electronic thermometer circuit diagram project

    2018-11-10 04:32:3259

    Sensors Using the LM3914 and LM35 temperature sensor can be designed various electronic thermometer projects . The LM35 series are precision integrated...

  • Electronic Insect Repellent Circuit

    2018-11-10 04:02:5859

    Figure 1 The circuit was designed to repel any form of insect using complimentary metal-oxide semiconductor or known as CMOS . A basic mosquito repelle...

  • Voltage follower with 1G ohm input resistance Circuit

    2018-11-10 03:56:4660

    Voltage follower with 1G ohm input resistance Circuit Circuit diagram This circuit uses an LM11 to form a voltage follower with 1G ohm input resistance...

  • Gain buffer circuit

    2018-11-10 03:30:2359

    The difference between these amplified signals is used to set the s bias and hence Ql Q2 current channel. This Ql forces of V GS at all that is require...

  • Water level indicator circuit using CMOS ICs

    2018-11-10 03:21:1659

    Sensors A very simple low cost water level indicator circuit can be designed using this schematic circuit . This water level indicator is based on a si...

  • Water Activated Relay

    2018-11-10 03:19:2859

    Water Activated Relay Notes: Croatian: Ovaj sklop je projektiran da ukljuci relej kada se na knotaktima pojavi voda.Tranzistor T1 moze biti zamijenjen ...

  • Nissan AT Model Starting System Circuit Schematic

    2018-11-10 02:39:5159

    The schematic diagram herein showsNissan AT model starting system operationwith theft warning system. The Nissan AT model starting system outlines inhi...

  • Repeating Timer No.2

    2018-11-10 01:39:2660

    Repeating Timer No.2 Description: This circuit is based on a simple asymmetric oscillator. The length of time the relay remains energized - and the len...

  • Timed Beeper Circuit

    2018-11-10 01:16:0659

    Timed Beeper Circuit Beeps 7.5 seconds after a preset time Adjustable time settings: 15 sec. 30 sec. 1 min. 2 min. others Circuit diagram Parts: R1 220...

  • Ionization smoke detector circuit using A5367

    2018-11-10 00:31:1060

    Sensors A very simple Ionization Smoke Detector with Interconnect and Timer alarm circuit can be constructed using the A5367 low-current, CMOS circuit ...

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