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Category Archives: Home Circuits

  1. Tutorial: Making Solar Cell Using 2N3055 Transistor

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    September 23, 2013 by MrJSY


  2. Water level alarm circuit

    3

    July 9, 2011 by todayscircuits


    Description. Here is a simple water level alarm circuit that will produce an audible alarm when the water level reachesĀ  …
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  3. Door bell circuit using NE555

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    July 9, 2011 by todayscircuits


    Description. The main part of this doorbell circuit are two NE555 timer ICs.When some one presses switch S1 momentarily ,the …
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  4. Remote controlled appliance switch circuit

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    June 28, 2011 by todayscircuits


    Description.Here is a versatile remote controlled appliance switch that can ON or OFF any appliance connected to it using a …
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  5. Transistor intercom circuit.

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    June 28, 2011 by todayscircuits


    Description. Here is a simple but effective intercom circuit that is based fully on transistors.The circuit is based on a …
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  6. Night security light

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    June 28, 2011 by todayscircuits


    Description. Here is a simple circuit switches on a light around 2 hours after midnight, the time at which most …
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  7. Plant moisture level monitor

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    June 28, 2011 by todayscircuits


    Description. Here is a simple circuit that will give a visual indication when the soil water level inside your flower …
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  8. Battery operated heater

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    June 28, 2011 by todayscircuits


    Description.Here is a simple heater circuit that can be operated from a 12V battery. The first part of the circuit …
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  9. Electronic mosquito repeller

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    June 28, 2011 by todayscircuits


    Description. Here is the circuit diagram of an ultrasonic mosquito repeller.The circuit is based on the theory that insects like …
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  10. LED torch using MAX660

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    June 28, 2011 by todayscircuits


    Description.This is a simple LED torch circuit based on IC MAX660 from MAXIM semiconductors. The MAX 660 is a CMOS …
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