The breath detector circuit I have explained below can be used to check or monitor the breathing function of a human or patient. So I have explained the detailed working of the circuit from the following explanation: Component Functions LM324 Op amp: A few operational amplifiers (op-amps) in the circuit magnify the minute voltage changes […]
Newly Updated Circuit Projects:
Mains 220 V AC Line Filter Circuit for Transient Suppression
The 220 V mains AC line filter circuit described here has two functions: it prevents high-frequency waves from being sent back into the power network and it protects connected equipment from power line disturbances and surges. This circuit employs a number of components, such as capacitors, resistors, inductors, and a varistor, which are deliberately positioned […]
Sleeping Aid Circuit
The sleep aid circuit appears to be particularly effective when used with young children experiencing restless nights. This can, in turn, contribute to the entire household enjoying uninterrupted sleep. With the sleep aid device operating next to you, you can customize the volume and depth settings according to your mood. Then, recline and focus your […]
Door Security Alarm Circuit for Alerting if Door was Opened
The door security alarm circuit discussed in this article alerts the user whenever the door fitted with the circuit is opened or closed or even moved from its original locked position. Using a Reed Relay and Magnet for the Triggering The idea utilizes the very basic reed relay and magnet concept across the door and […]
Simple Buck Converter Circuits using Transistors
In this post I have explained some basic facts about DC to DC buck converters and also learn how to build a simple buck converter circuit. A buck converter is also popularly known as a step-down converter, since its basic function is to step down a higher input voltage level to a lower output voltage […]
Making a Strong RF Discharge Circuit
In this article we study an RF discharge generation concept also called EMP generator capable of producing an intense RF electrical discharge in the air which may have the potentials of paralyzing and permanently damaging all electronic systems in the close vicinity. The idea was requested by Mr. Nidal. Technical Specifications I have seen a […]