This circuit was found in 1980s Radio Electronics. The circuit includes the power supply. The ICL8038 circuit was very common at the time in this type of application.
This circuit is from a 1967 documentation. It makes use of varicap and diode tunnel in addition to...
Author: Newton C. Braga Published:July 5, 2016 Formato:Book and e-Book Pages:...
This circuit is from an American publication of 1978. It can be assembled with modern transistors, since...