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.
The RF oscillator in the figure provides signals in the range of 7 to 100 MHz, using an overtone...
This sophisticated alarm with traditional components was found in an ancient American...
This circuit was obtained from a 90s Radio Electronics. The components used are from that time. The...