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Returns are accepted within 7 days of receipt unless otherwise stated on the item.
The 7475 is a neon filled voltage stabiliser tube with good regulation.
Seen from the top the two concentric circular electrodes held in place by a mica disc is clearly visible.
The striking voltage is 140 volts and it will hold the 100 Volt stabilised voltage for tube currents of 1.0 to 8.0 mA to within 2.0 Volts.