Loftin-White Amplifier with Parallel Output Valves. R1, 500,000 ohms (grid-leak type). R2, 25,000 ohms (G.L.). Potentiometer across the power valve supply, 20 ohms. Potentiometer across the detector filament, 20 ohms. Condenser in plate circuit of power valves, 1 mfd. Condensers in power pack rating from the bottom, 2, 1, 2 mfds. or more. Condenser between 100 ohms potentiometer and R2, 5 mfds. Full wave rectification can be used equally well as half-wave, the hookup being the same as for the standard Loftin-White.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310605.2.42.4
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Radio Record, Volume IV, Issue 47, 5 June 1931, Unnumbered Page
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82Loftin-White Amplifier with Parallel Output Valves. R1, 500,000 ohms (grid-leak type). R2, 25,000 ohms (G.L.). Potentiometer across the power valve supply, 20 ohms. Potentiometer across the detector filament, 20 ohms. Condenser in plate circuit of power valves, 1 mfd. Condensers in power pack rating from the bottom, 2, 1, 2 mfds. or more. Condenser between 100 ohms potentiometer and R2, 5 mfds. Full wave rectification can be used equally well as half-wave, the hookup being the same as for the standard Loftin-White. Radio Record, Volume IV, Issue 47, 5 June 1931, Unnumbered Page
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