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  • How to build Melody Generator Circuit Diagram

    2018-11-11 19:41:3459

    Description Here is the simplest melody generator circuit you can make using an IC.The UM66 series are CMOS IC’s designed for using in calling bell, ...

  • Balance input with Gain and Volume

    2018-11-11 19:40:5762

    Circuit with electronic symmetrical input, with possibility of regulation of the gain from the pontesometer RV1 and the level of signal with the RV2. T...

  • How to build Picoammeter circuit with 4 ranges

    2018-11-11 19:11:0959

    Circuit diagram This circuit uses a CA3420 BiMOS op amp to form a picoammeter with 4 ranges. The exceptionally low input current (typically 0.2pA) make...

  • How to build Logic Probe

    2018-11-11 17:36:4660

    Circuit diagram This circuit is a Logic Probe. It indicates the logic state of the node of any TTL logic circuit. To do that, we have to supply the pro...

  • Proximity detector schematic

    2018-11-11 17:01:0260

    Sensors A very simple proximity detector electronic project can be designed using this schematic circuit . This proximity detector electronic project u...

  • How to build Pulse Charger for reviving tired Lead Acid batt

    2018-11-11 16:48:5861

    CAUTION: Before you begin a project like this remember: mains voltage is dangerous so if you are not 100% sure of what you’re doing consult a friend ...

  • How to build Electronic Stethoscope

    2018-11-11 16:28:0659

    Description Stethoscopes are not only useful for doctors, but home mechanics, exterminators, spying and any number of other uses. Standard stethoscopes...

  • How to build A Very Useful Timed Beeper Circuit Schematic

    2018-11-11 15:22:3859

    Description This circuit is intended for alerting purposes after a certain time is elapsed. It is suitable for table games requiring a fixed time to an...

  • Voice changer circuit diagram using RTS0072B

    2018-11-11 15:14:1659

    Audio Circuits This voice changer circuit diagram electronic project is designed using the RTS0072B single chip CMOS LSI designed for voice changer app...

  • How to build Cuckoo sound Generator

    2018-11-11 14:49:2459

    Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. Circuit diagram Parts: R1,R5 1K 1/4W ResistorsR2 50K 1/2W Trimmer Cer...

  • Drop voltage indicator using 741 op amp

    2018-11-11 14:43:0659

    Sensors A drop voltage indicator can be designed using electronic diagram below. This indicator shows the drop voltage or disturbing impulses of any ex...

  • How to build Sound Effects Generator

    2018-11-11 14:38:3959

    Description: This circuit uses a UM3561 IC to produce four different sound effects. Circuit diagram Notes: Nothing too complicated here. The IC produce...

  • How to build Long Loopstick Antenna

    2018-11-11 12:52:1160

    Circuit diagram Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a...

  • LM3886 amp electronic circuit project

    2018-11-11 12:35:1760

    Audio Circuits This LM3886 amp electronic circuit project is capable of delivering 68W of continuous average power into a 4ohms load and 38W into 8ohms...

  • How to build Spy Ear

    2018-11-11 12:12:1159

    Description What binoculars do to improve your vision, this personal sound enhancer circuit does for listening. This light-weight gadget produces an ad...

  • How to build Discrete Virtual Ground Circuit

    2018-11-11 12:11:5760

    Description Here is the simple virtual ground circuit based on discrete components. This simple design comes from miniaturization guru Sijosae. Is to m...

  • How to build TV Muter Circuit

    2018-11-11 10:23:3459

    Description Many households are still graced by tube-type television sets. If you want to connect one of these large tellies to your stereo system to i...

  • TFDS4500 infrared adapter serial transceiver

    2018-11-11 09:56:5059

    Various circuits design This electronic infrared adapter serial transceiver circuit is based on a TFDS4500 IC and can be used to transmit data from por...

  • Low-cost FM booster electronic circuit design project

    2018-11-11 09:50:5959

    Radio Circuits A low-cost FM booster electronic circuit that can be used to listen programs from distant FM stations clearly can be designed using this...

  • ULN2004 water level indicator circuit

    2018-11-11 09:31:0459

    Various circuits design This ULN2004 electronic project circuit diagram design is a very simple water level indicator circuit project . This ULN2004 wa...

  • How to build When The Siren Sounds

    2018-11-11 09:01:2560

    Description In Greek mythology, a siren was a demonic being (half bird, half woman). Later on this idea was transformed in art into a mermaid: a combin...

  • How to build Mini Metronome

    2018-11-11 07:34:4859

    Linear scale Small size 40 to 208 beats per minute Circuit diagram Parts: P1 100K Linear PotentiometerR1 10K 1/2W Trimmer CermetR2 10K 1/4W ResistorR3 ...

  • ZN414 Portable Receiver

    2018-11-11 06:22:5059

    ZN414 Portable Receiver Description: An AM portable radio receiver made from theZN414 IC. The ZN414 ic has now been replaced by theMK484which is identi...

  • Varactorless high frequency modulator circuit design electro

    2018-11-11 06:13:4559

    Radio Circuits This electronic circuit is a very simple varactorless high frequency modulator . This varactorless high frequency modulator electronic p...

  • MK484 AM radio circuit design project

    2018-11-11 05:19:1459

    Radio Circuits Very simple , sensitive and high quality AM radio circuit can be make with MK484 monolithic integrated circuit with very few external co...

  • Universal Serial Bus USB pinout

    2018-11-11 04:41:2859

    Pinout Universal Serial Bus (USB) is a specification to establish communication between devices and a host controller (usually computers). USB 1.x/2.0 ...

  • FM CB radio receiver circuit design using TCA440

    2018-11-11 04:23:0859

    Radio Circuits A very simple FM CB radio receiver can be designed using this electronic diagram below. This FM CB radio receiver circuit is designed us...

  • Rain detector electronic circuit project

    2018-11-11 04:21:3259

    Sensors This rain detector electronic circuit project is an very simple alarm circuit , that will start an audio warning , if the liquid is present on ...

  • Tan Timer Circuit

    2018-11-11 03:24:1359

    Tan Timer Circuit Six timing positions suited to different skin types Timing affected by sunlight intensity Circuit diagram Parts: R1 47K 1/4W Resistor...

  • How to build Wide Range Timer

    2018-11-11 03:09:0459

    Description A wide rage auto turn OFF timer covering 1 minute to 20 hours in three ranges with S1. As soon as power is applied to the circuit the IC1 [...

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