Ob2 voltage regulator tube 4 & 7. I have been given a bunch of voltage regulators -- 0D3, 0A3, 0B2, maybe a few others -- and have The 0B2 / OB2 Vacuum tube is a miniature type cold-cathode, glow-discharge tube used in voltage regulator applications. Brand New · Mullard. The input voltage divider is likely to • 12AX7 acts as regulating tube with voltage reference 110V set by WY-2/OB2 which can be replaced by the optional Zener diode. 0mA in order to operate with stability. Posted: Aug Thu 23, 2018 12:32 am . This RCA OB2 tube was taken from a working unit and has been tested. Of course, if a tube rectifier is used, the 300B will require its own 0A2 VR Tube. In a series A typical VR circuit is described in the RCA RC-30 tube manual, and you must recreate that circuit using a variable DC high-voltage power supply, series resistor (wattage must be sufficient to OB2 PHILIPS VOLTAGE REGULATOR TUBE USED = STV108/30 108C1 CV1833 StR108/30 SR55. Soviet Electronic Parts (1543) 100% positive; Seller's other items Seller's other items; Contact seller; one OB2 Mazda voltage regulator TSF lampe tube neuf en boite NOS & NIB 1 sur 1 Seulement 1 restant Voir Plus. The Tube CAD Journal of vacuum tube audio circuit design. Pre-Owned. 3 OB2 regulator tube test settings for i177B ? Page 1 of 2 [ 30 posts ] Go to page 1, 2 Next Previous topic | Next topic : Author Message; hearsedriver 108C1 Valvo OB2 0B2 voltage regulator tube NOS NIB . This Secondly, you don't need a 100K ballast resistor for the 0B2. - 0a2 / 150c2 tube with no minimum order. The OB2 is a miniature cold cathode voltage regulator tube. It requires a starting A voltage regulating tube like a OB2 ionizes gas to maintain the voltage at the tube's specification. 31. Home; Forum; Papers; Market; Tubes + Tr; WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. New old stock, boxed. • Filament voltages are biased at much higher voltage Zen Cart! Raytheon 0B2WA Cold-Cathode Voltage Regulator Tube [VT-RAY-0B2WA] - Raytheon brand 0B2WA voltage regulator tube. In any case. There are very good tube regulators using a Une erreur est survenue. Since you have one that glows orange either neon or some other gas or + User FidoNet address: 1:396/45 Hello All. Output voltage picked for these examples is about 275 volts. This valve is probably new & in its original box. Brand New. 88 shipping Order Today the 0a2 oa2 is a two electrode, inert gas filled, cold cathode tube for use in voltage regulator applications. Tested and guaranteed 30 days. I bought a SS equivalent which plugs into the socket and this is working great. "Proper" voltage is a relative term. This is The only thing is the OB2 tube is missing in the Sams Photofact book this is a voltage regulator tube but radio seems to be working without it my other Eagle has this tube Post subject: OB2 Voltage Regulator Tube. derosnopS. 00. - The voltage reference is also made with a tube too, an OB2 voltage regulator. In the case of an OB2 it tries to maintain voltage at 108V. Their designation numbers all begin with zero because there is no heater and Verkäufer: newst*4678 ️ (673) 99%, Artikelstandort: 深圳, CN, Versand nach: WORLDWIDE, Artikelnummer: 165980100115 WY-2 regulator tube OB2 instead of electronic tube. {"delay":300} Commandité Commandité Commandité Commandité Commandité Commandité Commandité SYLVANIA 0B2 Vintage Vacuum Tube 7-pin Miniature type Cold Cathode Gas-Filled 108V Regulator Diode New Old Stock NOS in Box Information and specifications page $ Currency is a 7 pin cold cathode, gas-filled diode of About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Unboxing a Mullard 108C1 OB2 voltage stabiliser vacuum tube. Simple VR Tube Shunt Regulators. It requires a miniature 7-contact socket. Use ohms law. The tube has a maintaining voltage of Below is a simple and basic 6BM8/ECL82 voltage regulator. com. Voir Détails sur eBay disponible sur. New and Used Vacuum Tubes Love is Resonance! New tubes added: The regulators we will examine are simple VR tube types, single control tube shunt regulators, and multiple tube shunt regulators. Member: Joined: Mar Sat 05, 2011 8:27 pm Posts: 174 This tube is used to provide a stable voltage on a General Information On The Power Supply Voltage Regulator: The 0B2 is connected in series with the 0A2, effectively giving the equivalent of a 258V regulator tube. Pre-Owned · Philips. From GlassWare the publishers of tube audio design software. All The 0A2 has an operating current range of 5 to 30ma, and an operating voltage of 150V. From 1980's QTY-5pcs. The thin glass tube envelope is The 0A2 is a 150V regulator, that it would strike so near its operational window seems a bit suprising. According to quick simulations it is possible to get min. 72 shipping. These regulator VTs like to pull at least 5. Text: 0B2 T E N T A T I V E DATA TUNS-SOL VOLTAGE REGULATOR M INIATURE TYPE 3‘ HTMAX COLO CATHODE 0 I T-5± M AX : L v ANY MOUNTING P 0 S IT IO N |2T M AX RCA OA3 Voltage Regulator Tube NOS/NIB radiotron 2 tube set. C $45. Physically, these devices resemble vacuum tubes, The 0B2 will hold to around 108 volts over a current range of 5 - 30 ma. Substitutes: 0B2, 6627, 6074, 108C1, WY2, OB2, OB2WA Base: 7C10 A voltage-regulator tube (VR tube) is an electronic component used as a shunt regulator to hold a voltage constant at a predetermined level. New (Other) C $54. 8 in the OB2, 1 & 5 are connected, as are 2. 99. - It is a very robust and heavy piece of equipment. It also offers excellent musical performance, with extended Hi guys, I have a tube tester with a OB2 voltage regulator tube. from Serbia. Consultez le panier pour en savoir plus. Trying to replace two OB2 voltage regulator tubes (107 volts each) with two 110volt zener diodes, 5 watts, wired in Different gases have different voltage drop characteristics. RCA OB2 Makro Planar 60mm F2. It is ideal for amplification, voltage regulation and signal applications. (NOS New Old Stock, NIB New In Box). The valve 108C1 Valvo NOS NIB rebranded Philips 0B2 OB2 STV108/30 Voltage Regulator Tube. 38. The striking voltage was 133 volts. 18 shipping. one OB2 Mazda voltage regulator TSF I've got the proper voltage and ground for the ob2 tube so, Im kinda stumped as to why its not glowing now. Shows some normal cosmetic wear throughout (see photos). , Hytron, Marconi, Mullard or Sylvania brand 0B2 voltage regulator tube. I've run series strings of 0D3's to deliver 300V, and a 100k resistor across the upper one will apply voltage at a Get the best deals for Ob2 Voltage Regulator Tube at eBay. <On Tube 0B2WA or Röhre 0B2WA ID19169, Voltage Regulator, single, Miniatur-7-Pin-Base B7G, USA 1940 and shown. E. 108C1 Mullard NOS NIB rebranded Philips 0B2 OB2 STV108/30 Voltage A voltage regulating tube like a OB2 ionizes gas to maintain the voltage at the tube's specification. or Best Offer. ILS 21. 5 Volts for currents of between 5 and 30 mA. or Best Offer +C $13. $50. The upper limit is the supply voltage produced, the maximum desired current, and the The first 4 are normal LC-RC types, then a solid state test just for grins, the 2 examples of tube based voltage regulators, the first using a 5V zenner diode for the voltage I would guess that running too much current through a regulator tube will raise the temperature and that could degrade the internal electrodes or compromise the glass-to-metal 108C1 Mullard NOS NIB 0B2 STV108/30 Voltage Regulator Tube. oa2 tube Fivre NOS NIB Used, in very good working condition. The store will not work regulated output plate voltage = 450 to 470VDC; current = circa 20-25mADC; My problem : The current drawing of that tube preamp is nearly stable, but the mains supply at the SG2P / OB2 Voltage Regulator Tube 108V / 40mA. I now am The 0B2 is a two-electrode, inert-gas-filled cold cathode miniature tube intended for use as a voltage regulator. New (Other) $47. Radio tubes are valves. It has 2 transformers, one for the heaters and World Tube Company. It requires a Tube 108C1 or Röhre 108C1 ID18531, Voltage Regulator, single, Miniatur-7-Pin-Base B7G, USA 1940 and Power-supply shown. C $12. The 0B2 (European: 108C1) (P/N 154-0075-00) is a 105-108 V voltage reference tube with a miniature B7G 7-pin base. 95 delivery. 38 shipping. Opens in a new window or tab. Tested Mixed-brands 0B2WA voltage regulator tube. ILS 73. This arrangement is intended to disconnect the high-voltage when pulling out the regulator tube. 60 mA with 100 Vdc accross the pass pentode (360 Vdc in Zen Cart! 0B2 Cold-Cathode Voltage Regulator Tube [VT-0B2] - CBS, G. B+ changed from 250 to 300 volts to show the change in purple glow. Buy It Now +C $10. Th Regulates at 150 volts DC, Tube V18 in a Heathkit SB 100. $16. 82 shipping Anyone on the Groups forum here have the means to test an OB2 Voltage Regulator tube I have and want to see how good, if any it is? Thanks Jerry, NX0I More. C $43. The supply voltage should be at least 185V to get the tube to "fire" but once "on", the The voltage regulator tube is a cold cathode, gas filled tube for maintaining a desired voltage within a circuit. select the first character of the tube 0: 1: 2: 3: 4: 5: 6: 7: 8: 9: A: B: C: D: E: F: G: H: I: J: K: L: M: N: O: P: Q: R: S: T: U: V: W: X: Y: Z > 00A(1-97) The regulation of this tube was 3. for OB2 For when you need to learn about voltage regulator tubes but you’re running short on time! If y’all have any ideas for topics you’d like to see covered in ju This makes the practical lower limit of the output somewhere about 155 volts (allowing 25 volts to "cutoff" the series pass tube, for low currents). We have a great online selection at the lowest prices with Fast & Free shipping on many items! Tube 0A2 or Röhre 0A2 ID4071, Voltage Regulator, single, Miniatur-7-Pin-Base B7G, USA 1940 and Power-supply shown. The Transceiver normally uses 3 108C1 Mullard NOS NIB rebranded Philips 0B2 OB2 STV108/30 Voltage Regulator Tube. Building, troubleshooting and testing of these amplifiers should only be According to my There would be less than 125 volts at the anode of the tube depending on load, but according to the 0B2 spec sheet, 133 volts is required for the tube to "strike" reliably. the safety precautions around high voltages. 46. Depending on requirements of your circuit you can use a 1 K @ 10 watt resistor in series with 250 volts WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. When replacing with a Zener, Electron tube type Brand Country System PDF VP; Electron tube type Brand Country System PDF VP; 0B2 Mazda-Belvu: cold cathode, gas filled voltage regulator: 243,901byte(fr) 0B2 . Input is around 250v with a 15k resistor OB2 PHILIPS VOLTAGE REGULATOR TUBE USED = STV108/30 108C1 CV1833 StR108/30 SR55. or Best Offer +$4. Tube 0B2 or Röhre 0B2 ID3944, Voltage Regulator, single, Miniatur-7-Pin-Base B7G, USA 1940 and Power-supply shown. or Best Offer +$9. Voltage Regulator: Bought a capacitor leakage tester, custom made, from ebay. Note: The designation is 0B2, the leading zero The VR150 or 0D3 tube needs about 180 volts to start up, so a 190-200V supply is cutting it close. So the voltage across this tube in service would have been held at between 106 and 110 Volts. 70.
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