This circuit was found in an article in Radio Electronics magazine from May 1975. The circuit has several features and is powered by a 12 V source or battery.
Applying a high voltage to a mixed lamp can obtain a bluish light with a decorative effect. This...
This circuit was obtained in a 1976 magazine. We can use the 555 and another BC548 to generate square...
This AC operational amplifier has a power stage and a gain determined by R2. The maximum output...