Low noise amplifier (T466E)

Found in 1948 MIT documentation, this 4-tube amplifier is characterized by its low noise level.

Infrared Remote Speaker (CB4898E)
This 80's circuit uses an integrated amplifier of the era, but nothing prevents it from being...
Horizontal Bar TV Generator (CB524E)
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...
Dalayed Turn-On Gate (CB123E)
This circuit can be used to add a delay to a logic signal as shown by the input and output...