Nos Tubes Lot
Nos Tubes Lot
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 3 6sn7 vacuum tubes nos  US $20.00
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 VINTAGE OLD RADIO TUBE LOT NOS US $30.00
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 6CJ3 RCA COMPACTRON RADIO TUBE NOS US $.99
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 6DN3 ZENITH COMPACTRON RADIO TUBE NOS US $.99
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 6GF5 ZENITH COMPACTRON RADIO TUBE NOS US $.99
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 6EH4A SYLVANIA COMPACTRON RADIO TUBE NOS US $.99
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 AMPERITE 115C3 DELAY RELAY TUBE NOS US $.99
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 2 EACH NOS MALLORY PFP TWISTLOCK CAN CAPACITOR 5uF 350VDC US $9.99
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 2 EACH NOS CDE TWISTLOCK CAN CAPACITOR 60uF 150V US $9.99
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 10EW7 RCA COMPACTRON RADIO TUBE NOS US $.99
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 22JU6 SYLVANIA COMPACTRON RADIO TUBE NOS US $.99
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 LOT OF 2 6AH9 ZENITH COMPACTRON RADIO TUBES NOS US $.99
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 LOT OF 2 24 NATIONAL UNION RADIO TUBES NOS US $9.99
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 LOT OF 2 6SL7 GT MOTOROLA RADIO TUBES NOS US $35.00
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 NOS Dynaco PAS 3X Unbuilt Kit PAS3 tube preamp US $699.00
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 Lot of 45 MIXED vacuum tubes mostly NOS US $4.99
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 Amperex 7316 ECC186 PQ Premium D getterLot of 1 US $85.00
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 RCA vacuum tubes 6BK4C 6EL4A NOS 4 Lot US $19.99
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 RCA vacuum tubes 1 12AZ7A 2 12AU7 2 12AT7 ECC81 5 lot US $19.99
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 12AZ7 12AZ7A NOS tubes 5 pcs NIB assorted tested audiophile radio tubes US $34.99
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 BIG LOT 5814 12AU7 ECC82 5814A LOW NOISE TUBES FROM 1960S GE RCA ALL GOOD US $49.99
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 TELEFUNKEN NOS 12AX7 12AU7 6U6 6AL5 ONE OF EACH US $11.50
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 BULK OFFER 100x ECH81 TUNGSRAM NOS TUBE 6AJ8 6i1p X719 6C12 CV2128 6U1 ECH83 US $119.99
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 10x 6P18P Soviet 70s CCCP Audiophile Audio Pentode Output TUBE EL82 US $9.99
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 5x EL81 6CJ6 RFT Tube NOS TUBE US $9.99
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 2x EM84 RFT NOS in BOX MAGIC EYE TUBE 6FG6 6E3P US $19.99
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 ECH84 TUNGSRAM TUBE NOS QTY10 US $9.99
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 1J29B V 1J29B Miniature Tiny HF Pentode NOS QTY20 US $9.99
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 4x STR108 30 RFT Gas Stabilizer TUBE NOS in BOX US $9.99
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 1J37B Vintage Soviet miniature pentode NOS TUBE QTY15 US $8.88
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 BULK 80x SG1P EV SG1P Voltage Regulator Tube STV150 30 US $49.99
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 33x LD8121 NEC VFD TUBE Nixie Era 7 segment 12 digit US $99.99
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 Huge lot of 12 GE 12AU7A ECC82 tubes 2 full sleeves NIB NOS US $83.50
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 Lot of 8 12AT7 ECC81 tubes NIB NOS one full sleeve US $41.33
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 Matched Pair of Amperex 12AT7 ECC81 made in West Germany NIB NOS tubes US $35.33
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 Lot of 3 Sylvania 6X4WA tubes tested 1969 US $4.99
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 Lot of 5 2D21 NIB NOS tubes full sleeve US $4.99
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 Lot of 5 GE 6CB6A 6CF6 NIB NOS tubes full sleeve US $4.99
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 Lot of 4 6J7 NIB NOS tubes US $11.05
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 Huge lot of 12 RCA 7025 12AX7 NIB NOS tubes MATCHED PAIR 2 full sleeves US $411.00
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 Lot of 3 RCA 6KD6 tubes NIB NOS US $40.00
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 Lot of 80 MIXED vacuum tubes mostly NOS US $4.99
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 Vintage NIB NOS 5591 403B Western Electric Vacuum Tube US $12.99
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 Vintage GE 6K6GT Vacuum Ham Amp Radio Tube 60 22 Date Codes Black Plates US $7.99
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 Raytheon 6SL7GT Vintage Ham Radio Vacuum Tube US $5.99
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 Vintage IEC Mullard 6AW8A Vaccum Tube Amp Radio Ham US $5.99
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 Vintage Amperex 6J6 ECC91 England made Bugel Boy Tube Ham Radio US $11.99
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 National Union JAN CNU 6SL7GT Black Glass Vintage Tube 247 51 39 date codes US $19.99
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 Vintage RCA VT 87 6L7 Vaccum Tube Amp Radio Ham Nice US $5.99
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 Rauland Branded RCA 12BH7A Tube Vacuum Radio Vintage 64 52 274 Date Codes US $9.99
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 Vintage RCA 5651A Vaccum Tube Amp Radio Ham 66 22 Date Codes US $4.99
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 Vintage RCA 5965 Vaccum Tube Amp Radio Ham US $5.99
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 4 Fisher RCA 7868 Tubes MATCHED QUAD US $43.00
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 2 Dumont 7591 Tubes MATCHED PAIR US $37.02
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 2 RCA Smoked 6V6 GT Tubes TEST STRONG US $10.49
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 1 RCA Red Base 5691 6SL7 Tube NEW IN BOX US $27.00
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 1 Sylvania 6V6 GTA Tube TESTS STRONG US $9.99
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 1 Telefunken ECC82 Tube 12AU7 TESTS STRONG US $10.49
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 1 Fisher Telefunken ECC83 Tube 12AX7 TESTS STRONG US $20.00
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 1 Amperex Bugle Boy ECC82 Tube 12AU7 TESTS STRONG US $9.99
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 8 pcs cdet Capacitors 22mfd 400vdc Polyester NOS US $12.95
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 2 Mullard ECC83 Tubes 12AX7 TEST STRONG US $28.00
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 LOT OF3 SYLVANIA GOLD BRAND 6U8A ALL TEST GOOD US $10.00
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 A LOT OF 5 SYLVANIA 6AL5 NOS NIB VACTUBES US $9.99
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 25 NOS NIB 12AV7 5965 3 Free Audio Tubes US $100.00
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 SEVEN 7 GE 21JS6A 23JS6A NIB NOS US $35.95
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 MATCHED QUAD GE 6KN6 BEAM POWER NIB NOS US $65.95
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 Lot of 22 Mixed Radio Vacuum Tubes in Boxes NOS Used Complete List US $.99
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 Lot of 15 Vacuum Tubes 1 GE 6AQ5A RCA 6BC5 GE 6663 RCA 9002 RCA 12AU6 more US $15.00
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 Lot of 15 Vacuum Tubes 2 GE 6AQ5A RCA 6BC5 GE 6AU6A RCA 9002 RCA 12AU6 more US $15.00
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Led Tube drive technology development trend analysis
From a technical point of view of the market DC Led Tube light-driven technology needs analysis, high technology, the DC / DC Buck and high-efficiency resonant half-bridge (LLC) + PFC topology and power factor correction ((PFC) + Pulse Width Control (PWM) are two average current mode controller to form the new AC / DC driver IC will appear in a new generation of its vitality.
Technological advances, new technology to create human life. In recent years, global human consensus: the future with green energy-related industries brightest prospects. Led Tube bear the brunt of the lighting industry, will show infinite vitality and infinite mass market. 2009 Led Tube lighting industry in no way affected by the global economic crisis, the Chinese government's energetic efforts, China Led Tube lighting industry is rapidly take the heat in 2009, became Led Tube light the first year, China Led Tube light chain in this economic crisis the rapid growth and improvement, Led Tube rapid development of next-generation lighting technology, driven Led Tube light of the industrial chain of millions companies thriving.
Led Tube light is a shining star, Led Tube can be made based on diverse, ever-changing lighting and lighting, Led Tube advertising big screen, Led Tube information screens, mobile phones and MP3/MP4 display backlighting and other consumer electronics, notebook computer and LCD-TV display backlight.
Led Tube light source to work, inseparable from the driver IC. This phase of Led Tube Lighting recent trends in terms of drive technology.
Led Tube light of the basic structure
Led Tube light of the basic structure is: Led Tube Light + drive power + metal / plastic structure. Led Tube Led Tube light products related to the brightness, color, life; drive power Led Tube products involving electrical performance and stability, reliability, life; metal / plastic structural products related to Led Tube cooling performance and stylish new, and different of applications.
Led Tube without carbon emission energy efficient light source
Led Tube light source is a new generation of solid light source, Led Tube light as a green, energy saving, energy saving, Long Life light and the sudden emergence of fourth-generation, broad interest, in full swing rapidly. Led Tube light as the fourth generation of new energy-saving light source at its birth Jibei various types of light source used to do. As the incandescent light only five percent of its luminous efficiency, and Led Tube light-emitting efficiency was almost close to ninety percent. Led Tube light with its high energy, long life, environmentally friendly features of interest become a widespread concern. In recent years high-brightness Led Tube light source because of its manufacturing technology advances, while its production cost and steadily declined, and now almost all of Led Tube light source can be used as a high-brightness, high efficient and energy saving, carbon-free lighting source.
Led Tube light source driver IC needs
The current DC Led Tube light source is a low voltage (VF = 2 → 3.6V), high current (IF = 200 → 1500mA) semiconductor devices work, you must provide a constant DC current to the appropriate normal light. Direct current (DC)-driven DC Led Tube light source technology has become more mature, because we use everyday lighting is high-voltage AC power supply (AC100-220V),Hydraulic Fittings so the technology must be used to obtain lower step-Down Voltage, common is a switching power supply step-down, and then alternating current (AC) converted into direct current (DC), then the driver IC can be converted into DC current source to promote Led Tube light shine. Therefore, the DC drive Led Tube light source system application program must be: switching power supply + constant current source. Led Tube must have a certain amount of space inside to accommodate the power supply module, but the E27 standard screw is very limited space, it is difficult placement. Whether through the step-down switching power supply, or other methods, the system will have a certain amount of wear and tear, DC Led Tube in AC, DC conversion between about 8 to 25% of the electricity is loss of efficiency of the system difficult to achieve over 90%. Thereby increasing the power conversion efficiency has been the chip and power supply manufacturers to pursue.
Led Tube light source driver IC Common
Current source driver IC Common Led Tube is borrowed from the universal power supply IC, truly designed for the Led Tube light source driver IC, little, many companies are in the design, estimated that by 2010 there may be a lot to be City . Led Tube light source drive current, low-cost solution is not a safe method of RC Buck to achieve, if the earlier Christmas lights; low-cost drives can also use the CCR and the LDO, which drive current is not large, CCR can only drive below 0.5W Led Tube, such as 0.06W straw hat lamp, LDO regulator method can be driven with 1W of Led Tube, Led Tube light but for the life of disadvantage; DC / DC Fiber Optic Terminal Box → constant current source may be present One of the best known program.
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