This electronic rf detector circuit project is designed using common transistors and other few common electronic parts. This rf detector circuit responds to RF signals bellow the standard broadcast band to well over 500 MHz and provides an visual , and audible indication when the signal is received.
A very simple TV audio video transmitter circuit can be designed using this schematic diagram .
This TV audio video transmitter circuit can be used to transmit video signals from VCR ( or some other device ) to a TV without using any cable .
The TV audio video transmitter circuit combines line level audio and video signals, and transmits the resulting signal up to 300 feet.
This radio controlled motor circuit is very similar with a car radio controlled toy with seven control functions: forward, forward-left, forward-right, backward, backward-left, backward-right, and stop.