Under this name, Radioelectronics magazine published in the January 1974 issue a light exposure meter for photographers. The circuit used general-purpose transistors and a FET, with an LDR sensor.
This TTL circuit was found in the December 1990 issue of Radio Electronics magazine. The circuit has...
We found this circuit in Sperimentare magazine number 4 of 1977. The magazine no longer exists, but...
This crystal configuration can be made with triggers of any logic. The frequency is given by the...