This circuit was found in a 1999 British magazine (ETI). It is a device that receives the signal from a remote control and retransmits to the controlled device that may be out of visual transmitter line. The integrated circuit used is not very easy to get, so if your planned assembly before check component availability. This integrated circuit is a preamplifier with several steps and a big gain. Issuers LEDs are infrared type, assuming equivalent. The circuit may be powered by small batteries 4 common. optical features can be used to obtain higher receiver sensitivity as a converging lens on its front. For emitting LEDs can also be used the same resource, thus driving the signal to the device that will be controlled.
