This noise limiter for low intensity signals was found in a 73 magazine for radio amateurs from the 90's. The circuit is for signals from 10 mV to 1 V amplitude.
Found in Motorola's 1965 manual, this full-wave dimmer controls a load that depends on the used...
The two adding and differentiating circuits with operational amplifiers given below were obtained from...
This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on...