electronic modules

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Electron Tubes range of electronic modules include: amplifier-discriminators, logic converters, amplifiers, gating circuits and counter/timer boards.

These modules are used for:

• photon counting systems
• gain and impedance transformation
• photomultiplier gating

Listed below are brief specifications of some of the electronic modules available from Electron Tubes.

amplifier - discriminators

logic converters

The ET1 is an ECL to TTL converter
The TE1 converts TTL to ECL.

Power requirements are ±5V

I to F converters

The IF1 (56k pdf data sheet) generates a train of digital pulses, with frequency proportional to the anode current. The dynamic range is from -10 nA to -50 µA, with resolution of 0.5nA.

A-D + I-F converter

The ADIF1 combines the function of the ADI and IF1, providing a very wide dynamic range in photon
counting applications.

amplifiers

A1 is an inverting FET input transimpedance type, dc coupled. Four fixed conversion gain settings of 1,
10, 100 and 1000mV/µA are selectable by an externally mounted switch.

Further reading; download a copy of our technical reprint RP/093, in PDF format, Why photomultipliers need amplifiers.

gating circuits

These circuits protect the photomultiplier from the effects of high intensity light flashes by switching off the input to the multiplier section of a photomultiplier. Two complementary versions are available, GB1A and GBIB.

• GB1A switches OFF a normally ON photomultiplier.
• GB1B switches ON a normally OFF photomultiplier.

Further reading; download a copy of our technical reprint RP/061,in PDF format, Gating of photomultipliers.

counter/timers

CT2 module (123k pdf data sheet)
plugs into the RS232 port of a Personal Computer, enabling the computer to be used as a low cost,
high performance pulse counting and current measuring instrument.

Contact us for further information.
Request a quotation.