This shadow detector circuit operates using two LDRs and effectively detects the difference between the light levels and triggers a loud audible warning siren. In circuits which uses a single LDR (photoresist), the detection may not be as sharp as with two LDRs discussed here.Operational details of the shadow detector circuit may be studied as […]
Newly Updated Circuit Projects:
Make this Simple Set Reset Circuit using IC 555
In this post I have explained a simple IC 555 set/reset application circuit for activating or deactivating a relay alternately. Circuit Operation This electronic set reset circuit is very simple, easy to implement and very useful. It can provide you many applications options in cases where it may be necessary to toggle (switch on and […]
Make this Simple Music Box Circuit
This simple circuit can be used to emulate the operation of a music box. The number of notes may be limited to 10 at the most, and therefore is capable of generating a simple melody. By: Akanksha Rathode Circuit Operation The circuit uses two popular integrated circuits: The timer 555 and 4017 decade counter Operation […]
Lathe Machine Over Load Protector Circuit
In this article I have explained a simple overload cut off circuit for safeguarding heavy mains operated machines such as a lathe machine. The idea was requested by Mr. Howard Dean. Technical Specifications May I first say I have very little knowledge of electronics although I could follow a simple diagram. I operate a small […]
LPG Gas Leakage Detector Alarm Circuit
Are you feeling vulnerable or suspecting a possible LPG gas leakage in your house? Then may be this gas leakage alarm circuit might help you. Written by: Sai Srinivas The Concept This circuit is a simple solution for detecting LPG gas leakage in households which causes severe physical and monetary losses if left unattended for […]
Simple Ultrasonic Sound Sensor Alarm Circuit using Opamp
This article discusses a simple ultrasonic sound sensor alarm circuit which may be appropriately set for detecting sound pressures well above the normal human listening capacity, that may range from 20 kHz and over. Ultrasonic Concept Ultrasound or ultrasonic sound waves was probably invented even before humans existed on this planet by a few of […]