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Newly Updated Circuit Projects:

Making a Strong RF Discharge Circuit

Last Updated on August 13, 2023 by Swagatam 75 Comments

rfdischargegeneratorcircuit

In this article we study an RF discharge generation concept also called EMP generator capable of producing an intense RF electrical discharge in the air which may have the potentials of paralyzing and permanently damaging all electronic systems in the close vicinity. The idea was requested by Mr. Nidal. Technical Specifications I have seen a […]

Filed Under: Power Supply Circuits Tagged With: Discharge, Making, RF, Strong

Footsteps Detector Circuit

Last Updated on August 1, 2023 by Swagatam Leave a Comment

footsteps detector sensor circuit using a loudspeaker

By sensing vibrations from footfall, a Footsteps Detector Circuit is a creative and affordable approach for catching intruders. It employs a simple setup with a low-cost loudspeaker and a mute switch to pick up even the smallest steps. This simple circuit is excellent for enhancing building and garden security. We’ll go through the fundamental components […]

Filed Under: Security and Alarm, Sensors and Detectors Tagged With: Detector, Footsteps

How to Connect LM338 IC in Parallel to Increase Output Current

Last Updated on July 26, 2023 by Swagatam 24 Comments

how to connect LM338 in parallel for increased current output

The LM338 is an adjustable 3-terminal positive voltage regulator capable of providing up to 5 amperes of output current. To increase the output current capability, you can connect multiple LM338 ICs in parallel. When you connect them in parallel, each IC will share the load current, allowing you to achieve higher total current handling capacity. […]

Filed Under: Power Supply Circuits Tagged With: Connect, Current, Increase, LM338, Output, Parallel

Touch Alarm Circuit

Last Updated on July 23, 2023 by Swagatam 2 Comments

block diagram of hum alarm

The touch alarm circuit senses the mains hum signal from an intruder’s body and raises the alarm sound. This happens whenever an intruder touches a potential element set as the sensor, such as the door knob, or any object that needs to be protected. If the circuit is linked with the door knob, the circuit […]

Filed Under: Security and Alarm Tagged With: Alarm, Touch

Shock Vibration Detector Circuit using 801S Sensor

Last Updated on July 17, 2023 by Swagatam 3 Comments

basic shock detector using 801S

The shock alarm module that we are presenting to you can be used in a house as well as in a car. Given its low manufacturing cost, it can be replicated in several copies and connected to different positions at home. It can be also installed in a vehicle where it will trigger a siren […]

Filed Under: Security and Alarm, Sensors and Detectors Tagged With: 801S, Detector, Sensor, Shock, Vibration

Transformerless Power Supply Circuit using MJE13005

Last Updated on July 7, 2023 by Swagatam 78 Comments

transformerlesspowersupplycircuitusingmje13005

The following article presents a very simple low current 220 V mains operated transformerless power supply circuit using an inexpensive MJE13005 transistor and few other passive electronic components. As can be witnessed in the given circuit diagram, the design is extremely straightforward. How it Works Transistor T1, which is a high voltage NPN transistor MJE13005 forms the […]

Filed Under: Power Supply Circuits Tagged With: MJE13005, Power, Supply, Transformerless

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