This 2-tube amplifier was found in a Japanese publication of 1964. The circuit has excellent sound quality. The power supply is not given and must provide a voltage of 300 V.
This circuit with the ULN3784B appeared in the October 1984 issue of Radio Electronics magazine. It can...
The circuit shown in the figure was suggested by National Semiconductor in its 1994 Linear...
The 74123 TTL integrated circuit consists of a monostable that can be configured to generate...