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The power supply is regulated based on a -140 V reference produced by a [[OD3]] gas regulator tube.
The power supply is regulated based on a -140 V reference produced by a [[OD3]] gas regulator tube.
The +225V supply uses three [[5V4G]] rectifier tubes in parallel.


A 514D model exists, which has a 24-section 250 ns lumped L-C [[delay line]].   
A 514D model exists, which has a 24-section 250 ns lumped L-C [[delay line]].