This amplifier with the EL84 tube is a European commercial type from Corpim mounted on a printed circuit board. The diagram appeared in a September 1958 Radio Electronics magazine.
This circuit has a common configuration widely used in projects on this site. The transistor is...
Author: Newton C. Braga Published:Aug, 2016 Formato:Book and e-Book Pages:...
We find this circuit in an American publication of 1978. The integrated circuit is the CMOS 4013...