We found this circuit in a Japanese publication of 1962. It uses high-voltage, battery-powered 2.5 V filament tubes from a 45 V battery, common at the time. Tubes today are no longer manufactured.
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We found this circuit in a Japanese publication of 1962. It uses high-voltage, battery-powered 2.5 V filament tubes from a 45 V battery, common at the time. Tubes today are no longer manufactured.
