Simple Touch Sensitive Switch Circuit

The two simple touch sensitive switch circuits listed below illuminate a 20 watt light bulb any time the connections are confronted so the skin resistance is mostly about a couple of Megs or lesser. The circuit on the left hand side makes use of a power MOSFET which switches on every time the voltage in […]

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Infrared Motion Detector Circuit

The article describes a basic infrared (IR) centered motion detector circuit which includes the IC LM567 for being sure dependable and quick and easy procedures. The circuit as well functions as a proximity or difficulty detector circuit. I discovered this design on the web while looking for a precise and trustworthy yet inexpensive proximity sensor […]

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Simple Light Activated Switch Circuit

The light activated switch circuit works on a very basic principle, that of amplification of the current produced by a photo-transistor when light impinges upon it. The current is amplified by op-amp 741 that drives T2, energising a relay. The circuit shown can be used to activate a relay with a conventional torch up to […]

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How to Make a Dissolved Oxygen Sensor Display Circuit

The submit talks about a sensor device designed for calculating the level or amount of dissolved oxygen in water and other fluids. Nowadays companies manufacture a wide variety of sensors for assessing oxygen in water referred to as Dissolved Oxygen sensors, which you may utilize in water, chemical processor jobs, laboratory, and ecological. Dissolved oxygen […]

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How to Make a Heart Rate Sensor with Processor Circuit

The sensing of the heart pulses is actually produced by two IR photo diodes one being the transmitter of IR while the other acceptor. The IR rays thrown by the transmitter diode is shown from the finger tip blood content of a person and is obtained by the receiver diode. The strength of the shown […]

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How a Microwave Sensor or a Doppler Sensor Works

In this concise article we understand the microwave sensor IC KMY 24 and attempt to realize its characteristics and its pinout functioning particulars. The KMY24 microwave sensor module is planned and constructed on the thought of Doppler result. When appropriately designed it radiates an unfavorable power microwave signal of around 2.45 GHz across the guided […]

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Thermostat Circuit for 1KW Space Heater using SCRs

The following is a SCR controlled space warmer circuit manufactured in 2001 which as of late got to be discontinuous so I chose to supplant it with the more straightforward strong state hand-off circuit above. Likewise, SCRs are much less expensive than strong state transfers which keep running about $40 for the 25 amp units. […]

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Light Operated Relay Circuit

In this post you will learn about a very simple light activated relay circuit in which a relay is toggled On/OFF in response to the light or darkness over a photo sensitive device, the circuit utilizes only a Darlington transistor for activating the relay The light sensitive relay circuit presented here has been configured such […]

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