Relaxation oscillator using a Thyratron (T426E)

This oscillating circuit for a frequency of 588 KHz was found in a book on electronic designs with modern tubes.

Home Security System (CB4804E)
In the figure we have a security system consisting of a sophisticated alarm found in a 90s edition...
Solenoid driver (CB9282E)
Found in an Electronic World, this circuit is designed to control solenoids up to 5 A. The circuit...
Ultra Precise Delay Circuit (CB5152E)
This circuit is from an 80's American documentation. The circuit uses components of the time which...