This is the transmitter for a remote-control system published in the August 1986 issue of Radio Electronics magazine. The circuit uses two 555 CMOS transistors to drive two series LEDs.
This configuration is found in other LM317 manufacturer's manuals. It is a regulating circuit in...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductoir of 1994....
We obtained this circuit from the 1977 National Semiconductor FET Databook. The frequency depends only...