Bootstrap 6F5 Amplifier (T396E)

Found in a documentation of modern tube designs this circuit has gains that can be between 16 and 225. The circuit can be applied to other tubes.

TPS54200 LED Synchronized Buck Driver (COM195E)
January 2017 - Texas Instruments' new TPS54200 integrated circuit for excitation of LEDs with a...
Photo-Oscillator (CB217E)
The frequency of the signal produced by this oscillator depends on the amount of light falling...
5 Voltage Level Indicator (CB4892E)
This circuit is based on an uncommon Texas component today, as found in an American 1980s...