This circuit for a 16-channel infrared transmitter was found in the August 1984 issue of Radio Electronics magazine. The circuit is powered by a 9 V battery.
The indicated circuit uses an unusual buffer from National Semiconductor. The frequency is given by...
This battery charger is suggested by National and has a switch that turns it off when the battery is...
This circuit reinforces signals in a frequency range between 1500 and 2000 Hz for use in...