In this article I will comprehensively discuss a relatively accurate electronic heart rate sensor circuit processed by a few discretely wired opamp circuit stages, and subsequently we’ll learn how this can be modified for making a heart rate monitor alarm circuit. Using IR Photodiode Sensors The sensing of the heart pulses is basically done by […]
Newly Updated Circuit Projects:
Remote Controlled Pulley Hoist Mechanism Circuit
In this post I have explained a self locking worm gear mechanism for hoisting heavy loads through an electrical motor. The main feature of the system being its self locking in an event of a motor failure. The idea was requested by Mr. Amit Patkar. Technical Specifications I love electronics, especially automation, I have been […]
Laughter Sound Simulator Circuit
As the name suggests, this device generates electronic sound, resembling human laughter. BASIC DESIGN To enable the circuit start the proposed operations, it must have a fundamental sound input or frequency for processing. This basic frequency is established through a simple oscillator operating at 1 kHz frequency. The next, requirement would be to process this […]
How to Use Resistors with LED, Zener and Transistor
In this post I have explained how to use resistors while designing an electronic circuits using LEDs, zener diodes, or transistors. This article can be very useful for the new hobbyists who normally get confused with the resistor values to be used for a specific component and for the desired application. What is a Resistor […]
Stereo FM Transmitter Circuit using IC BA1404
The following posts explains how to build a simple to build FM stereo transmitter circuit using IC BA1404. About the IC BA1404 An exceptional stereo audio FM wireless transmitter circuit is presented below. The circuit relies upon the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator which includes integrated stereo modulator, […]
Illuminating DRL and Turn Lights with Single Common Lamp
In this article I have explained a simple circuit for enabling the turn signal lamp of any car to carry out a two-way function of DRL lights as well as well the stipulated turn lights. The idea was requested by Mr. Artem. Technical Specifications Thank you for your fanaticism with electronics, this is really noticeable […]