This circuit was obtained from Popular Electronics from June 1978. It doubles the input DC voltage. Obtained current is very low, serving only for polarization circuits.
We can use this amplifier with low impedance headphones with good performance. Possible...
This regulator circuit is from Motorola documentation from 1969. It makes use of an integrated...
This circuit from a 90s Electronics Now, uses a 4010 gate as a signal amplifier. The circuit...