CV2434 / Z803U high-stability long-life gas filled trigger tube
(*) Negative trigger current should not be drawn by the valve. Such a current occurs if the trigger potential is reduced below 90V during anode conduction.
To limit the positive peak trigger current a resistor of 2.2k ohm is required for trigger capacities between 4700 and 15000pF, and a resistor of 5.6k ohm for capacities greater than 15000pF
(**) To ensure high stability of characteristics in light and darkness a priming discharge of approx 10µA flowing between priming anode and cathode is essential. If the valve is used without priming discharge, delays in trigger ignition of up to 10 seconds may occur and thus appear to impair the stability of the characteristics. However under these conditions the pre-strike current of the valve is reduced considerably.
The cathode connection should be made to pins 4, 5 and 7 together.
The Z803U was donated by Guy Selby-Lowndes
This file was last modified
17:04:03, Thursday February 24, 2022