We found the circuit of this Japanese transistorized commercial receiver in a documentation from the 1960s. It is a radio for the medium wave range with 6 transistors and 9 V power.
This circuit was found in an old GE SCR manual. The SCR must be in accordance with the relay and...
Found in an Electronics Now from the 90s this mixer has several inputs. The integrated circuit can...
In the figure we have a piezoelectric transducer drive circuit that can be used in conjunction with the...