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ACR10 450 V Television Monitor

In designTelevisionCRT405 lines
Last updated 2 October 2026

The ACR10 (CV1382) shares the VCR139A's base, heater and screen size, but runs at a typical 450 V final anode, which makes it about twice as sensitive. The deflection amplifiers then work at half the swing.

This variant reuses the monitor's 12 V circuits and deflection amplifiers, with a new CRT divider and a regulated mains supply from a valve-radio transformer, shared with the VCR139A's Addendum D.

At a glance

CRTACR10 (CV1382), 4 V heater, 70 mm green
Final anodeAbout 450 V, regulated
SupplyValve-radio mains transformer
StatusDesign; four tubes tested

Documentation

The full design report, schematics and parts list will be published here once the project has been built, tested and filmed.

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