This commercial radio for the AM band was sold in Japan in the 1960s. The circuit has an IF of 455 kHz and is powered by batteries. The push-pull output gives a good audio power.
Raytheon's used integrated circuit is no longer common today. The circuit was obtained in a...
We found this conventional amplifier configuration with the TDA2030 in a 1974 publication. The...
This differentiator for the negative front of the input signal can be elaborated based on any...