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Archives for 2014

AC Phase, Neutral, Earth Fault Indicator Circuit

Last Updated on July 30, 2019 by Swagatam 22 Comments

The circuit explained here will provide LED indications and show if there’s a possible fault in the wiring of your home AC Phase, Neutral, and Earth connections. The idea was requested by Mr. SS kopparthy. Technical Specifications sir, very good morning. I thank you for your help. I further wanted you to consider a circuit […]

Filed Under: Sensors and Detectors Tagged With: AC, Earth, Fault, Indicator, Neutral, Phase

Fishing YoYo Stop-Motion Switch Circuit with Indicator

Last Updated on July 20, 2019 by Swagatam 1 Comment

a Stop Motion Circuit 1

In this post I have explained a stop-motion switch circuit or a strike indicator for aiding fishing yo yo applications. The idea was requested by Mr. Mike. Technical Specifications (kindly bear the long discussion) Hello Sir, My name is Mike. I am the one requesting help with this stop-motion switch from the “Homemade Circuits” Blog […]

Filed Under: Mini Projects Tagged With: Fishing, Indicator, Motion, Stop, Switch, YoYo

Laptop Anti-theft Security Alarm Circuit

Last Updated on July 7, 2019 by Swagatam Leave a Comment

antitheftcircuit

In this post I have explained a simple laptop anti-theft alarm circuit which can used with any concerned object such as a laptop which needs to be protected, when an intruder tries to approach the unit or makes an attempt to steal it the connected alarm is instantly raised. The idea was requested by one […]

Filed Under: Security and Alarm Tagged With: Alarm, Anti, Laptop, Security, Theft

Programmable Diesel Generator Timer Circuit

Last Updated on July 6, 2019 by Swagatam 3 Comments

diesel generator timer circuit

In this post I have explained a simple yet accurate programmable diesel generator timer circuit which can be used for achieving discretely programmable ON/OFF timing sequence for the connected diesel generator set. The idea was requested by Mr. Raj Kumar Mukherji. Technical Specifications Happy new year and hope you are fine. There is a request […]

Filed Under: Timer and Delay Relay Tagged With: Diesel, Generator, Programmable, Timer

Timer Circuits with Auto Pause and Memory During Power Failures

Last Updated on July 6, 2019 by Swagatam 35 Comments

timerpowermainsfailurecorrection

In this post we try to investigate a couple of  innovative solutions which could be used for pausing the counting process of a timer IC during power failures, and also restart the process when mains is restored, ensuring a continuous functioning of the timer without errors. The idea was requested by Mr. Arun Dev. Technical […]

Filed Under: Timer and Delay Relay Tagged With: Auto, Circuits, During, Memory, Pause, Timer

Cellphone Display Light Triggered Remote Control Circuit

Last Updated on July 6, 2019 by Swagatam 4 Comments

CELLPHONELIGHTTRIGGEREDREMOTECONTROLCIRCUIT

In this post I have explained a cell phone remote control circuit using the light from its display. The idea was requested by  Dondon. Technical Specifications I need a circuit similar to the circuit above but I will use the LED of mobile phone as light source so I can turn ON and OFF the […]

Filed Under: Remote Control Circuits Tagged With: Cellphone, Control, Display, Light, Remote, Triggered

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