TV modulator using a motorola MC1374

The circuit recovers an FM audio signal that varies from less than 1 kHz to about 10 kHz. The circuit is designed to demodulate frequency-modulated (FM) audio signals within the frequency range of less than 1 kHz to approximately 10...

This circuit provides a simple and efficient method to draw current from a motorcycle battery to charge a mobile phone. Most mobile phone battery packs consist of three 1.2-volt cells, resulting in a total voltage of 3.6 volts. For...

This circuit demonstrates the use of a standard LED as a light sensor by utilizing the photovoltaic voltage generated across the LED when it is exposed to light. LEDs are cost-effective alternatives to photodiodes and include a built-in filter...

Due to their speed, accuracy, effectiveness, and cost-efficiency, infrared (IR) digital thermometers have supplanted traditional mercury thermometers. An ear digital thermometer utilizes a thermopile sensor to measure the infrared heat emitted by the eardrum, which correlates with the temperature...

The transconductance of an operational transconductance amplifier is directly proportional to the transconductance parameter, allowing for easy control of signal amplification. The output current is calculated as the product of transconductance and input voltage. This circuit operates effectively up...

An embedded system designed for tracking and positioning vehicles utilizes the Global Positioning System (GPS) and the Global System for Mobile Communication (GSM). This project employs the AT89S52 microcontroller to interface with various hardware peripherals. The system continuously monitors...