Tube 0A3 or Röhre 0A3 ID4072, Voltage Regulator, single, Octal (Int.Octal, IO) K8A, USA 1935 and Power-supply shown. Radio tubes are valves.

The 0A3 gas filled voltage stabiliser would strike at 100 - 105 volts and then burn at 75 volts. For tube currents of 5 - 40 mA the voltage would only change by 6.5 volts and over the range 3 - 30 mA the regulation is 3 Volts. The construction consists of a bright outer cylinder and an inner conductor. The discharge takes place within the cylinder.

Title: 0A3 0B3 0C3 0D3 Author: Tung-Sol Subject: FP-2003-08-27 Created Date: 8/28/2003 1:50:39 AM

In America, VR tubes were given RETMA tube part numbers. Lacking a heater (filament), the tube's part numbers began with "0" (zero). In Europe, VR tubes were given part numbers under the professional system ("ZZ1xxx") and under a dedicated system.

2007年3月27日 · The 0A3(a), 0C3(a) and 0D3(a) are all 8 pin octal bases, with a jumper between 3 and 7, often used to protect downstream electronics in case the regulator wasn't inserted, pin 5 as the plate, and pin 2 as cathode.

2017年7月1日 · Equivalent to the OA3, VR75/30. Ready time: 3. SG-2S / 0A3 / VR75/30 voltage regulator tube Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. Wholesale & retail trade. Worldwide shipping.

0A3 Tung-Sol v`° 0A3.pdf (55459 bytes) 0A3 General Electric v`° GL874.pdf (1026648 bytes) 0A3A RCA (HB3) v`° 0A3A.pdf (162925 bytes) 0A4G : RCA (HB3) TRI`° 0A4G.pdf (84550 bytes) 0A4G Sylvania TRI`° 0A4G.pdf (119067 bytes) (fr) 0A4G Sylvania TRI`° 0A4G ...

Example #2: testing an NOS RCA JAN CRC 0A3. A good friend, CJ, asked me to demonstrate testing an 0A3, so the important specs for an 0A3 as listed in the GE ETI-176 tube manual are: 75V average drop; average regulation within the operating range is 5v, operating current 5ma-40ma, average starting voltage of 100v.

This project uses a 0A3 (VR75) voltage regulator tube for a nightlight because of it's nice orange neon glow. Most other voltage regulator tubes are filled with argon gas and give off a weak purple glow. Here, this project will light up a 0A3 when it gets dark and shut it off in light.

2024年10月19日 · The 0A3 / OA3 / 0A3A Vacuum Tube is a glass octal type cold-cathode, glow-discharge tube used in voltage regulator applications. They require an octal socket. Voltage Regulator: Maximum Supply Voltage ..... 105 V Regulated Voltage .....