This circuit is from a 1975 RCA tube manual. It appears elsewhere on the site. R5 depends on the voltage of the amplifier with which it is used and can be changed.
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...