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Updated 1/15/2021 Vacuumtubes.biz Tube List Tubes are New Old Stock (NOS) and packed in their original boxes. Most are common USA brands such as GE, Raytheon, RCA, Sylvania and Tung-Sol. UNIQUE brands or USED tubes available only as indicated in "NOTES". Prices and quantities subject to change without notice. Prices shown are per each tube and do not include shipping. Shipping to USA addresses only. TUBE QTY. PRICE NOTES EACH 01A 1 $45.00 0A2 107 $4.00 See 6073 & 6626 0A3 83 $5.00 Same as VR-75/30 0A4 34 $15.00 0A5 7 $7.00 0B2 182 $5.00 See 6074 & 6627 0B3 44 $3.00 Same as VT-184 0C2 20 $4.00 0C3 68 $5.00 Same as VR-105/30 & VT-200 0D3 101 $4.00 Same as VR-150/30 0D3W 3 $7.50 0G3 44 $3.00 Same as 85A2 0Y4 4 $3.00 0Z4 55 $3.00 1A3 19 $3.00 1A4P 9 $3.00 1A5GT 56 $3.00 1A6 35 $3.00 1A7GT 62 $3.00 1AB5 13 $3.00 1AB6 1 $10.00 Same as DK-96 1AC6 2 $12.00 1AD2 15 $3.00 1AD4 75 $3.00 1AD5 33 $3.00 1AE4 22 $5.00 1AF4 15 $4.00 1AH4 8 $3.00 1AX2 15 $3.00 1AY2 5 $3.00 1B3 98 $3.00 Includes Types 1G3, 1J3 & 1K3 1B4 4 $6.00 1B5 16 $4.00 1B27 1 $20.00 1B32 5 $10.00 Same as 532A 1B35 5 $12.00 1B40 6 $15.00 1B46 10 $3.00 1B51 1 $25.00 1B63 1 $20.00 1BC2 8 $3.00 1BG2 2 $3.00 1BH2 4 $3.00 1BK2 3 $3.00 1BQ2 1 $3.00 1BX2 1 $3.00 1BY2 3 $3.00 1C1 1 $10.00 1C5GT 22 $3.00 1C6 13 $3.00 1C7 2 $3.00 1C21 1 $15.00 1D5 10 $5.00 1D7 12 $3.00 Page 1 Updated 1/15/2021 TUBE QTY. PRICE NOTES 1D8 30 $3.00 1D21 6 $15.00 Same as SN4, 631P1 1DG3 5 $3.00 1DK1 1 $3.00 1DK27 1 $3.00 1DK29 4 $3.00 1DN5 3 $3.00 1E1 1 $10.00 1E4G 2 $20.00 1E5 1 $5.00 1E7 28 $4.00 1F4 12 $5.00 1F5 20 $5.00 1F6 5 $3.00 1F7 5 $4.00 1G4 16 $8.00 1G5 3 $6.00 1G6 28 $3.00 Includes 2 G style $4.00 ea. 1H2 1 $3.00 1H4 9 $20.00 1H5GT 79 $5.00 Same as VT-223 1H6 17 $4.00 1J5 6 $5.00 1J6 43 $6.00 Includes 7 GT style 1L4 68 $3.00 1L6 3 $55.00 1LA4 31 $3.00 1LA6 8 $9.00 1LB4 3 $10.00 1LC5 33 $3.00 1LC6 47 $3.00 1LD5 30 $4.00 1LE3 4 $10.00 1LG5 8 $3.00 1LH4 120 $3.00 1LN5 75 $4.00 1N2 5 $3.00 1N5 32 $4.00 1N6 9 $5.00 1N21B 1 $10.00 Diode 1N23A 10 $10.00 Diode 1N42 5 $9.00 1P5 24 $4.00 1P21 3 $40.00 1P25 1 $30.00 Used in Army Sniper Scopes 1P29 1 $20.00 1P39 1 $20.00 1P40 14 $12.00 1Q5 22 $3.00 1R4 32 $3.00 Same as 1294 1R5 61 $5.00 1S2A/B 5 $3.00 1S4 259 $3.00 1S5 135 $3.00 1SA6 2 $5.00 1SB6 1 $4.00 1T4 96 $3.00 1T5 24 $3.00 1U4 89 $5.00 1U5 29 $7.00 1U6 3 $50.00 1V 16 $5.00 1V2 41 $3.00 Page 2 Updated 1/15/2021 TUBE QTY. PRICE NOTES 1V5 2 $5.00 1W5 1 $4.00 1X2 59 $3.00 1Z2 27 $5.00 2-01C 5 $25.00 Test Probe Diode 2A3 1 $90.00 2A4 20 $4.00 2A5 6 $15.00 2A6 5 $6.00 2A7 14 $8.00 2AF4 13 $3.00 2AH2 3 $3.00 2AS2 9 $3.00 2AV2 15 $3.00 2B3 7 $5.00 2B7 20 $3.00 2B22 3 $75.00 2B23 3 $8.00 2BN4 20 $3.00 2BU2 10 $3.00 2BY7 1 $3.00 2C21 1 $5.00 Same as 1642 2C26 15 $3.00 2C34 8 $7.00 2C36 7 $12.00 2C39A 10 $25.00 2C40 16 $25.00 2C42 12 $25.00 Special 2C43 2C43 3 $20.00 2C44 2 $18.00 2C46 3 $25.00 2C50 6 $35.00 2C51 10 $45.00 Same as 396A & 5670 2C52 4 $18.00 2C53 16 $25.00 2CN3 8 $3.00 2CW4 17 $4.00 Nuvistor 2CY5 15 $3.00 2D21 74 $6.00 Same as 5727 2DS4 9 $3.00 Nuvistor 2DV4 6 $5.00 2DZ4 2 $3.00 2E5 13 $10.00 2E22 2 $30.00 2E24 100 $4.00 2E25 8 $5.00 2E26 81 $4.00 2E30 42 $6.00 2E32 22 $5.00 2E36 12 $4.00 2E42 5 $6.00 2EG4 12 $4.00 2EN5 6 $3.00 2ER5 8 $3.00 2EV5 1 $3.00 Same as 2EA5 2FH5 10 $3.00 2FQ5 1 $3.00 2FS5 10 $3.00 2FY5 2 $3.00 2G21 12 $10.00 2G22 1 $10.00 2GK5 10 $3.00 2GU5 15 $3.00 Page 3 Updated 1/15/2021 TUBE QTY. PRICE NOTES 2HA5 5 $3.00 2HM5 5 $3.00 2HQ5 5 $3.00 2K26 3 $20.00 2K28 1 $20.00 2K45 1 $50.00 2K48 1 $50.00 2V3 1 $3.00 2W3 1 $12.00 2X2 51 $3.00 3A2 15 $3.00 3A3 10 $3.00 Two R-3A3 solid tubes 3A4 243 $3.00 3A5 59 $3.00 3A8 20 $4.00 3AF4 7 $3.00 Same as 3DZ4 3AL5 20 $3.00 3AT2 5 $3.00 3AU6 18 $3.00 3AV6 15 $3.00 3AW2 5 $3.00 3B4 146 $3.00 3B7 6 $5.00 Same as 1291 & VT-189 3B22 19 $20.00 3B23 3 $15.00 3B24 7 $10.00 3B25 3 $15.00 3B28 11 $24.00 3B29 9 $25.00 3BA6 1 $3.00 3BC5 19 $3.00 3BE6 10 $3.00 3BL2A 1 $3.00 3BM2 5 $3.00 3BN4 20 $3.00 3BN6 20 $3.00 3BU8 20 $3.00 3BW2 10 $3.00 3BY6 10 $3.00 3BY7 1 $4.00 Same as 3BX6 3BZ6 40 $3.00 3C6 4 $3.00 Same as XXB 3C24 22 $19.00 3C30 2 $25.00 3C34 2 $55.00 Same as 25T and HK24 3C45 5 $50.00 3CA3 5 $3.00 3CB6 30 $3.00 3CE5 6 $3.00 3CF6 8 $3.00 3CN3 5 $3.00 3CS6 15 $3.00 3CU3 9 $3.00 3CX3 1 $3.00 3CX100A5 6 $25.00 Same as 2C39A & 7289 3CY5 21 $3.00 3CZ3 3 $3.00 3D6 39 $7.00 Same as 1299 or VT-185 3D21B 8 $30.00 3DA3 5 $3.00 3DB3 6 $3.00 Includes 1 R-3DB3 Solid Tube 3DC3 8 $3.00 3DF3 5 $3.00 Page 4 Updated 1/15/2021 TUBE QTY. PRICE NOTES 3DG4 1 $3.00 3DH3 3 $3.00 3DJ3 9 $3.00 3DK6 10 $3.00 3DR3 4 $3.00 3DS3 6 $3.00 3DT6 25 $3.00 3DZ4 7 $3.00 Same as 3AF4 3E6 4 $3.00 3E29 8 $15.00 See 829B 3EA5 3 $3.00 3EH7 15 $3.00 3EJ7 15 $3.00 3ER5 8 $3.00 3FH5 1 $3.00 3FS5 6 $3.00 3GK5 17 $3.00 3GS8 10 $3.00 3HA5 2 $3.00 Same as 3HM5 3HM5 8 $3.00 Same as 3HA5 3HQ5 10 $3.00 3HS8 5 $3.00 3JC6 10 $3.00 3KT6 10 $3.00 3LF4 15 $3.00 3MR24 2 $3.00 Used Only 3Q4 127 $4.00 3Q5 96 $4.00 3S4 97 $3.00 3V4 42 $7.00 Same as DL94 4-65A 2 $65.00 4-125A 2 $90.00 4AU6 8 $3.00 4AV6 10 $3.00 4B24 3 $80.00 4BC5 10 $3.00 4BC8 10 $3.00 4BL8 10 $3.00 4BN6 10 $3.00 4BQ7 10 $3.00 4BS8 10 $3.00 4BU8 10 $3.00 4BZ6 10 $3.00 4BZ7 10 $3.00 4CB6 10 $3.00 4CS6 10 $3.00 4CX250 2 $125.00 4CY5 2 $3.00 4D22 2 $80.00 4DE6 7 $3.00 4DK6 6 $3.00 4DT6 10 $3.00 4EH7 10 $3.00 4EJ7 10 $3.00 4ES8 10 $3.00 4EW6 10 $3.00 4GJ7 10 $3.00 4GK5 10 $3.00 4GM6 10 $3.00 4GS7 3 $3.00 4GS8 4 $3.00 4GX7 2 $3.00 4GZ5 1 $3.00 Page 5 Updated 1/15/2021 TUBE QTY. PRICE NOTES 4HA7 10 $3.00 4HC7 6 $3.00 4HK5 1 $3.00 4HM5 10 $3.00 4HM6 10 $3.00 4HQ5 10 $3.00 4HS8 10 $3.00 4HT6 4 $3.00 4JC6 10 $3.00 4JD6 10 $3.00 4JH6 5 $3.00 4KE8 10 $3.00 4KT6 5 $3.00 4LJ8 5 $3.00 4LU6 2 $3.00 4MK8 5 $3.00 4MP12 1 $3.00 4PR60A 2 $150.00 4X150A 1 $25.00 Used Only 4X150D 4 $70.00 4X150G 41 $40.00 4X250B 2 $65.00 5A6 5 $4.00 5AM8 11 $3.00 5AN8 20 $3.00 5AQ5 40 $3.00 5AS4 5 $20.00 5AS8 10 $3.00 5AT8 10 $3.00 5AU4 13 $12.00 5AV8 10 $3.00 5AW4 6 $4.00 5AZ4 5 $5.00 5B8 10 $3.00 5BC3A 5 $9.00 5BE8 9 $3.00 5BK7 10 $3.00 5BQ7 10 $3.00 5BR8 10 $3.00 5BT8 10 $3.00 5BW8 5 $3.00 5CG8 10 $3.00 5CL8 10 $3.00 5CM8 5 $3.00 5CQ8 10 $3.00 5CZ5 10 $3.00 5DH8 4 $3.00 5DJ4 6 $5.00 5EA8 10 $3.00 5EU8 10 $3.00 5EW6 10 $3.00 5FG7 5 $3.00 5FV8 5 $3.00 5GH8 10 $3.00 5GJ7 9 $3.00 5GM6 10 $3.00 5GS7 8 $3.00 5GX6 2 $3.00 5GX7 10 $3.00 5HA7 7 $3.00 5HB7 4 $3.00 5HC7 1 $3.00 5HG8 10 $3.00 Page 6 Updated 1/15/2021 TUBE QTY.
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  • TB053, Generating High Voltage Using the PIC16C781/782

    TB053, Generating High Voltage Using the PIC16C781/782

    M TB053 Generating High Voltage Using the PIC16C781/782 EQUATION 1: Author: Ross Fosler Microchip Technology Inc. di IN L → V VIN = L1 t = iL dt L1 INTRODUCTION The peak current is achieved the moment before Q1 turns off. Equation 2 shows the peak current, where D th The Nixie tube is a device born out of the middle 20 is the duty cycle and T is the period for pulse width century, used to display digital information in a human modulation. readable format. Basically, it is a high voltage numerical display. Today, the Nixie tube has been replaced by EQUATION 2: more efficient, more durable, and longer lasting devices, such as LED displays and LCDs. However, for VIN this Technical Brief, the Nixie tube serves as an excel- DT = IPEAK L lent visual feedback of the PIC16C782’s ability to gen- 1 erate high voltage from a low voltage source. This Technical Brief introduces the boost converter The current in an inductor cannot change instanta- topology operating in Discontinuous mode. As an neously. When Q1 is switched off, the current in L1 con- example, a simple 9V to 170V DC-DC converter is tinues to flow through D1 to the storage capacitor, C1, designed based on this topology, and is used to provide and the load, RL. Thus, the current in the inductor power to a three-digit Nixie tube display. The decreases linearly in time from the peak current. In dis- PIC16C782 is used to control the DC-DC converter and continuous operation, the inductor current actually falls provides data decoding for the display.
  • Display Devices

    Display Devices

    ELEKTRONIKOS ĮTAISAI 2009 1 DISPLAY DEVICES VGTU EF ESK [email protected] ELEKTRONIKOS ĮTAISAI 2009 2 Display devices Display devices are used for the visual presentation of information. 1. Analog display devices (cathode-ray tubes) • Oscilloscope tubes •TV CRTs 2. Digital display devices • LED (including OLED) displays • VF (vacuum fluorescent ) displays • LCD (liquid crystal) displays • Nixie tube displays and PDPs (plasma display panels) • Electroluminescent displays (ELDs) 3. Others: • Electronic paper • Using principles of nanoelectronics (carbon nanotubes, nanocrystals) • Laser TV VGTU EF ESK [email protected] ELEKTRONIKOS ĮTAISAI 2009 3 Classification of electronic information technologies with high information content; highlighted technologies are treated in this article w4.siemens.de/.../heft2_97/artikel08/index.html VGTU EF ESK [email protected] ELEKTRONIKOS ĮTAISAI 2009 4 Display devices Electronic display devices based on various principles were developed. Active display devices are based on luminescence. Luminescence is the general term used to describe the emission of electromagnetic radiation from a substance due to a non-thermal process. Luminescence occurs from a solid when it is supplied with some form of energy. Photoluminescence arises as a result of absorption of photons. In the case of cathodoluminescence material is excited by bombardment with a beam of electrons. Electroluminescence is a result of excitation from the application of an electric field. Fluorescence persists for a short lifetime of the transition between the two energy levels. Phosphorescence persists for much longer time (more than 10-8 s). Passive display devices reflect or modulate light… VGTU EF ESK [email protected] ELEKTRONIKOS ĮTAISAI 2009 5 Display devices.