Tube 0D3 or Röhre 0D3 ID4081, Voltage Regulator, single, Octal (Int.Octal, IO) K8A, USA 1935 and Power-supply shown. Radio tubes are valves.

2003年7月8日 · The OD3 is a mercury vapor cold cathode voltage regulator suitable for 150VDC at 40mA max. It needs a striking voltage ( igniting it) of 185V min. so, yes this should work. You'll need to calculate a dropper resistor to arrive at the "striking" voltage ( a little higher won't hurt but too low and the tube won't light up) using Ohms' law.

2015年10月22日 · 0D3 Voltage Regulator Tube – pinout. So the view is backwards when seen from the top, not that you’d ever need it: Ceramic octal tube socket – 0D3 pinout. The internal jumper across pins 3-7 allows you to disconnect the downstream circuit when the regulator isn’t in the socket, which is a Very Good Idea with a shunt regulator.

The 0D3-A is a two-element gas filled, cold cathode voltage regulator. It is designed to provide a regulated output of approximately 150 volts. A jumper connected in the base between pins 3 and 7 provides the designer with several possible connections to ensure protection of associate components in case the regulator is removed from the socket.

2009年12月28日 · Like cademan said, the OD3 is a voltage regulator tube. It's function is to hold a constant voltage at a certain point in a power supply. It is probably the last tube to light because there has to be enough voltage/current going through it before it …

Title: 0D3 Author: RCA Subject: FP-2011-10-30 Created Date: 10/30/2011 12:19:01 PM

2016年7月22日 · The 0D3 (and its siblings the 0A3, 0B3, and 0C3) is an octal base, gas-filled, cold cathode voltage regulator. Voltage regulator tubes are characterized by a practically constant internal voltage drop (similar to a zener diode).

The VR150 is a gas filled discharge tube that exhibits a near constant voltage across the valve for currents within the range 5mA to 40mA. In fact the regulation is 150 plus or minus 5.5 Volts. …

Too large a capacitance (>0.1 μF for an 0D3, for instance), however, and the circuit will form a relaxation oscillator, definitely ruining the voltage regulation and possibly causing the tube to fail catastrophically. VR tubes can be operated in series for greater voltage ranges.

2017年6月30日 · 0D3 is a 150 volt gas regulator tube. Those aren't filament pins but rather jumpers in base of the tube. Best to operate the tube in your Heath and see if it glows a purple color. You can test this tube with a power supply, resistor (10K @ 10 Watt) and meter. Use a power supply around 250 volts.