Circuit Lake

Electronic Project and Circuit Collection


1.5V Battery Operated FM transmitter

May 07, 2012 By: admin Category: Analog, Ham Radio, Transmitter No Comments →

The purpose of this 1.5V FM broadcast transmitter circuit is to provide a simple, appliance-like low-power transmitter to rebroadcast audio. It can be used to rebroadcast the output of a CD player, television receiver, or radio receiver. This transmitter does not have pre-emphesies, so it is not high-fidelity. It has sort of an “AM” sound […]

5W VHF TV Transmitter

October 06, 2011 By: admin Category: Analog, Miscellaneous, Transmitter, Video, Wireless No Comments →

This VHF TV TRANSMITTER can be used to transmit movies from your PC to your living room, run a college TV station, hotel cable system info pages, re-transmit the TV program you’ve never been able to receive in your valley, cover rural areas of Africa with TV signal from satellite stations and other system that […]

Energy Monitoring Transmitter

August 07, 2011 By: admin Category: Arduino, AVR, Digital, Microcontroller, Monitoring, Project, Transmitter No Comments →

This energy monitoring transmitter, known as emonTx, is an Atmega328-based small wireless energy monitoring node. It also fully compatible with Arduino IDE. EmonTx is designed to take inputs from multiple CT sensors, optically from a pulse-output utility meter and from multiple one-wire temperature sensors. The design is based on the JeeNodeV5 by Jean-Claude Wippler and […]

Telephone FM Transmitter

July 29, 2011 By: admin Category: Analog, Project, Transmitter, Wireless Comments Off on Telephone FM Transmitter

This project can transmits phone conversation up to 30 metres (100 feet) to an ordinary FM receiver. You can experiment to get greater transmission range away from the phone line by adding an aerial (about 150 cm of 26 gauge wire) to the collector of T2 (see circuit below). To use phone transmitter, you need […]