Proximity Detector Circuit – LC Tuned IC CS209

The post details an LC tuned proximity detector circuit, using a LC tank circuits and the IC CS209A This is a straightforward proximity switch circuit using IC CS209. The CS209A is actually a bipolar monolithic integrated circuit for use in metal detection / proximity detection purposes. The CS209A consists of an oscillator set up through […]

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Automatic Day Night Triggered Car Headlamp Circuit

In this post we learn how to make a simple automatic day night activated car headlamp circuit. The circuit uses a LDR for sensing darkness and daylight and results in the respective switching. This devices activates the car’s headlights as soon as evening falls and turns them down once the day time comes back. The […]

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Simple Infrared Thermopile Sensor Circuit Explained

A simple infrared thermopile sensor circuit diagram is shown underneath. The op amp must be a excellent low-noise unit. We usually make use of the LTC1050 for such purposes, however various other pin-compatible selections may be present and tried. (The all-pervasive 741 op amp is not going to be eligible as a “low-noise” substitute, although […]

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10 Channel Capacitive Touch Switch Circuit

In this article we are going to construct a capacitive touch switch circuit with 10 channel output, the state of the each channel can be turned ON and OFF sequentially by touching acoin sized metal plate. Capacitive touch is very commonly used in our smartphones, tablets or any gadgets which have touch screen. The term […]

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