RCA 0D3 Vintage Vacuum Tube Voltage Regulator Stock#A759 | eBay
0D3/VR150 Voltage Regulator Diode Tube. Designed to provide a regulated output of approximately 150 volts. MFR: RCA. SKU: 0D3. New old stock. No longer available for export.
2 Vintage RCA 0D3/VR150 Gas Filled, Cold Cathode Voltage Regulator- BangyBang Tubes | Reverb