The discussed capacitive proximity sensor alarm circuit is composed of a transistor TR1 NPN BC107 (or similar) fitted in oscillator and operating a Darlington TR2 NPN BC517 accustomed to push […]
Automatic Darkness Activated Porch Light Circuit
The post explains a simple dark triggered porch light or corridor light circuit using a single IC 741 and few other passive components. This arrangement enables you to automatically switch […]
Simple 1 minute to 60 minutes Timer Circuit using IC 4011
This simple NAND gate timer circuit enables you to turn off a selected device after about 1 to 60 minutes. The circuit can be used to turn off gadgets such […]
Simple Water Level Alarm Circuit using IC 555
In this article we talk about an easy water level alarm circuit using a 555 timer designed to generate an audible alarm as soon as the water level reaches a […]
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 […]
Metal Detector Circuit using a Single IC
In this post we learn how to make a simplest metal detector circuit using a single CMOS IC 40106 Simple metal detector circuit The metal detection circuit displayed here might […]