Active with the output at the high level, this oscillator was found in November 1984 Radio Electronics magazine. The supply can be between 3 and 12 V and the output signal is rectangular.
This is the traditional voltage follower configuration with the 741 operational amplifier. The...
This circuit was found in 1960s Radio Electronics. The circuit uses components from that time. The...
This digital indicator circuit was found in the June 1988 issue of Radio Electronics magazine. The circuit...