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Teledyne MA2709A Quick Start Manual

Thyratron trigger system
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Suitable for triggering most medium and high
power thyratrons.
OVERVIEW
The MA2709A is designed as a trigger generator for
most medium and high power thyratrons. It can be
triggered by either a low-level electrical signal into the
BNC connector or via an optical signal into the FSMA
connector. The maximum working frequency is 1 kHz.
The MA2709A can provide a maximum grid 1 pre-
ionising current pulse of 45 A (determined by the
external grid 1 drive resistor) from a nominal 500 V
drive voltage, together with a nominal 1 kV grid 2
trigger pulse (with -150 V bias) from an 80 Ω source,
delayed from the grid 1 pulse by 0.5 µs. Grid 1 and
grid 2 outputs are via SHV BNC connectors.
The unit has Transient Voltage Suppressors (TVSs)
fitted internally but it is important that additional TVS
protection, as described on page 2, is fitted close to
Whilst Teledyne e2v has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and
also reserves the right to change the specification of goods without notice. Teledyne e2v accepts no liability beyond that set out in its standard conditions of sale in respect
of infringement of third party patents arising from the use of tubes or other devices in accordance with information contained herein.
Teledyne e2v (UK) Limited, Waterhouse Lane, Chelmsford, Essex CM1 2QU United Kingdom Teledyne e2v (UK) Ltd. is a Teledyne Technologies company.
Telephone: +44 (0)1245 493493 Facsimile: +44 (0)1245 492492
Contact Teledyne e2v by e-mail:
© Teledyne UK Limited 2023
Enquiries@Teledyne-e2v.com
or visit
Approved for public release: Teledyne e2v APPROVED (CM 5002586)
Triggered by either optical or low–level electrical
trigger input signal.
the thyratron being triggered, and that the mains input
is filtered and protected from voltage spikes. The
earthing of the unit should follow good practice.
With the additional external TVS protection, the unit
has been shown to withstand 20 kV, 100 ns spikes at
the grid 1 and grid 2 outputs without damage
www.teledyne-e2v.com
for global sales and operations centres.
MA2709A
Thyratron Trigger System
.
A1A-MA2709A Version 12, May 2023

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Summary of Contents for Teledyne MA2709A

  • Page 1 Whilst Teledyne e2v has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and also reserves the right to change the specification of goods without notice. Teledyne e2v accepts no liability beyond that set out in its standard conditions of sale in respect of infringement of third party patents arising from the use of tubes or other devices in accordance with information contained herein.

  • Page 2: General Data

    (see note 5) optical (See Fig 4 and note Trigger input impedance Ω Trigger input frequency (see note 7) Trigger input pulse duration µs © Teledyne UK Limited 2023 Document subject to disclaimer on page 1 A1A-MA2709A Version 12, page 2...
  • Page 3 11. Measured at 50% pulse amplitude. 12. Measured between 10% and 90% amplitude with no load connected. 1. The MA2709A has a filtered changeover socket 13. The average current drawn from the negative to allow operation with either 115 ± 10% or 230 bias supply depends on the operating frequency ±...
  • Page 4 HEALTH AND SAFETY HAZARDS Teledyne e2v electronic devices are safe to handle and operate provided that the relevant precautions stated herein are observed. Teledyne e2v does not accept responsibility for damage or injury resulting from the use of electronic devices it produces.

  • Page 5: Connection Schematic

    CONNECTION SCHEMATIC Fig.1 MA2709A remote from the thyratron discharge circuit Fig.2 MA2709A mounted close to the thyratron discharge circuit © Teledyne UK Limited 2023 Document subject to disclaimer on page 1 A1A-MA2709A Version 12, page 5...
  • Page 6 Fig.3 Box Layout and mounting (All dimensions nominal and in mm) © Teledyne UK Limited 2023 Document subject to disclaimer on page 1 A1A-MA2709A Version 12, page 6...
  • Page 7 Fig.4 Suitable drive circuit for optic transmitter Input Pulse Amplitude 10 V Pulse Width 1 µs Rise Time 0.1 µs © Teledyne UK Limited 2023 Document subject to disclaimer on page 1 A1A-MA2709A Version 12, page 7...