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 Marshall MXL V12 large diaphram condenser Siicon Valve mic w Tube sound $399.99 Time Remaining: 6h 11m Buy It Now for only: $449.99 |
 CAD Trion 8000 Multi Pattern Studio Tube Condenser Mic w Shockmount Case $219.00 Time Remaining: 13d 17h 52m Buy It Now for only: $219.00 |
 MIKTEK CV4 TUBE CONDENSER MICROPHONE 9 PICKUP PATTERNS FREE 2 DAY SHIPPING $1,399.00 Time Remaining: 23d 2h 2m Buy It Now for only: $1,399.00 |
 MXL 9000 Tube Condenser Microphone $149.95 Time Remaining: 26d 17h 4m Buy It Now for only: $149.95 |
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 Groove Tubes GT 55 Condenser Cable Professional Microphone $41.00 (7 Bids) Time Remaining: 1d 4h 58m |
 Behringer T 47 Vacuum Tube Condenser Studio Mic Large Diaphragm Condenser Mic $138.75 Time Remaining: 29d 6h 30m Buy It Now for only: $138.75 |
 M Audio Sputnik vacuum tube mic microphone large condenser shockmount hard case $455.00 Time Remaining: 19d 13h 38m Buy It Now for only: $455.00 |
 KCM TUBE CONDENSER MICROPHONE OUTPUT TRANSFORMER 1151 $12.95 Time Remaining: 27d 34m Buy It Now for only: $12.95 |
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 PPA Audio Tube Condenser Mic w Separate Power Supply $41.00 (6 Bids) Time Remaining: 2d 9m |
 Rode K2 Variable Pattern Studio Tube Condenser Microphone $699.00 Time Remaining: 17d 11m Buy It Now for only: $699.00 |
 Groove Tubes GT 44 Sterling ST 44 Tube Condenser Microphone w power supply $399.99 Time Remaining: 2d 17h 4m Buy It Now for only: $399.99 |
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 CAD Trion 8000 Multi Pattern Studio Tube Condenser Mic w Shockmount Case $149.99 Time Remaining: 2d 1h 55m |
 MXL V69XM Vacuum Tube Large Diaphram Condenser Microphone with Case $299.00 Time Remaining: 4d 21h 40m Buy It Now for only: $299.00 |
 AKG PERCEPTION 820 TUBE STUDIO CONDENSER MICROPHONE $394.75 Time Remaining: 23h 32m Buy It Now for only: $394.75 |
 VINTAGE SONY C 37A TUBE CONDENSER MICROPHONE W POWER SUPPLY grlc737 $4,300.00 Time Remaining: 1d 21h 21m Buy It Now for only: $4,300.00 |
 MXL MXL 960 Tube Condenser Microphone $199.99 Time Remaining: 5d 19h 9m Buy It Now for only: $199.99 |
 schoeps siemens cm640 tube condenser microphone in box $567.00 Time Remaining: 2d 22h 49m |
 Used Avantone CV28 Small Capsule Tube Condenser Microphone No Case $319.99 Time Remaining: 23d 20h 18m Buy It Now for only: $319.99 |
 AKG Perception 820 Tube Studio Condenser Microphone PROAUDIOSTAR $404.00 Time Remaining: 5d 22h 26m Buy It Now for only: $404.00 |
 AKG Perception 820 Tube Condenser Mic Perception820 $399.99 Time Remaining: 23d 17h 32m Buy It Now for only: $399.99 |
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 Alctron BV200 Tube Condenser Studio Microphone Kit $379.95 Time Remaining: 8d 23h 39m Buy It Now for only: $379.95 |
 Sontronics Helios Large Diaphragm Studio Tube Condenser Microphone BRAND NEW $375.00 Time Remaining: 26d 2h 42m Buy It Now for only: $375.00 |
 AKG THE TUBE CLASSIC VINTAGE STUDIO TUBE CONDENSER MICROPHONE C12 C12VR LQQK 2 $2,999.00 Time Remaining: 22d 9h 35m Buy It Now for only: $2,999.00 |
 Groove Tubes GT55 Condenser Microphone GT 55 Mic GT 55 $149.99 Time Remaining: 25d 22h 16m Buy It Now for only: $149.99 |
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 Rode NTV Valve Condenser Microphone Mic Tube $479.99 Time Remaining: 25d 22h 31m Buy It Now for only: $479.99 |
 SE Electronics Gemini Dual Tube Cardioid Condenser mic with case microphone $777.00 Time Remaining: 1d 6h 50m Buy It Now for only: $777.00 |
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 AUDIO TECHNICA AT3060 TUBE STUDIO CONDENSER MICROPHONE $104.50 (2 Bids) Time Remaining: 3d 2h 2m |
 Carvin CTM 100 Tube Condenser Microphone Power Supply $490.00 Time Remaining: 3d 17h 41m Buy It Now for only: $490.00 |
 Mojave MA 200 Tube Condenser Cable Professional Microphone $750.00 Time Remaining: 4d 4h 16m Buy It Now for only: $750.00 |
 Rode K2 Tube Condenser Studio Microphone Mic K 2 $599.00 Time Remaining: 19d 23h 35m Buy It Now for only: $599.00 |
 Neumann M147 Tube condenser mic with PSU shock mount M 147 2 $1,899.00 Time Remaining: 7d 5h 57m Buy It Now for only: $1,899.00 |
 ADK A 51TC TUBE CONDENSER MICROPHONE W WINDSCREEN DJ 8 POWER SUPPLY CASE $99.00 (1 Bid) Time Remaining: 3d 2h 3m |
 Telefunken AK 47 AK47 R F T Tube Condenser Microphone Kit $1,599.99 Time Remaining: 20d 19h 54m Buy It Now for only: $1,599.99 |
 MXL V69 ME Mogami Edition Large Diaphragm Condenser Tube Microphone NEW $299.95 Time Remaining: 8d 55m Buy It Now for only: $299.95 |
 MXL Revelation Tube Condenser Microphone $1,295.00 Time Remaining: 29d 18h 19m Buy It Now for only: $1,295.00 |
 STERLING AUDIO Groove Tube ST 51 ST51 STUDIO CONDENSER MICROPHONE USED $39.99 Time Remaining: 3d 4h 26m Buy It Now for only: $49.99 |
 Used Avantone CV28 Small Capsule Tube Condenser Microphone $399.99 Time Remaining: 7d 23h 14m Buy It Now for only: $399.99 |
 Rode K2 Tube Studio Condenser Microphone Valve Mic $699.00 Time Remaining: 26d 18h 13m Buy It Now for only: $699.00 |
 MXL 960 Tube Condenser Microphone $399.99 Time Remaining: 5d 19h 15m Buy It Now for only: $399.99 |
 NEUMANN M147 M 147 PRO STUDIO TUBE CONDENSER RECORDING MIC WITH ACCESORIES LQQK $1,999.00 Time Remaining: 28d 16h 42m Buy It Now for only: $1,999.00 |
 ADK TC Tube Microphone Condenser Large Diaphragm Fixed Cardiod Open Box $100.00 (1 Bid) Time Remaining: 3d 4h 37m Buy It Now for only: $400.00 |
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 Rode K2 Condenser Cable Professional Microphone Tube Mic $489.00 Time Remaining: 26d 23h 6m Buy It Now for only: $489.00 |
 Brauner VMX Pure Cardiod Tube Condenser Mic Microphone MINT $3,599.00 Time Remaining: 21d 9h 10m Buy It Now for only: $3,599.00 |
 Beesneez Arabella Producer Series Microphone Tube Condenser Mic $1,899.99 Time Remaining: 3d 21h 56m |
 AKG SolidTube Condenser Professional Microphone Mullard ECC83 LDC Tube Mic $475.00 Time Remaining: 25d 19h 14m Buy It Now for only: $475.00 |
 ADK TC Tube Condenser Microphone NEW $599.00 Time Remaining: 23d 18h 56m Buy It Now for only: $599.00 |
 Rode Classic Microphone Tube Condenser Mic 1 $974.99 Time Remaining: 13d 5h 11m Buy It Now for only: $974.99 |
 MXL 960 Tube Condenser Microphone $199.99 Time Remaining: 8d 19h Buy It Now for only: $199.99 |
 Sterling Audio ST69 Condenser Tube Microphone $199.99 Time Remaining: 5d 20h 14m |
 ADK TT LARGE TUBE Condenser Microphone Area51 TT 9 Polar Patterns Studio Mic $679.99 Time Remaining: 24d 15h 39m Buy It Now for only: $679.99 |
 MXL Genesis Mullard Tube Recording Condenser Microphone Kit NEW $595.00 Time Remaining: 8d 2h 46m Buy It Now for only: $595.00 |
 Mojave MA 200 Tube Condenser Microphone Mint $875.00 Time Remaining: 11d 2h 44m Buy It Now for only: $875.00 |
 AVANTONE CV 12 TUBE VOCAL CONDENSER MIC MULTI PATTERN LARGE CAPSULE $449.00 Time Remaining: 25d 23m Buy It Now for only: $449.00 |
 Groove Tubes GT 55 Condenser Cable Professional Microphone $149.00 Time Remaining: 5d 22h 57m Buy It Now for only: $229.00 |
 M Audio Sputnik Condenser Cable Professional Vacuum Tube Microphone package $500.00 Time Remaining: 8d 22h 58m Buy It Now for only: $500.00 |
 Audio 2000s Tube Condenser Microphone Professional ATM1104 vacum tube pre amp $399.00 Time Remaining: 23d 18h 32m Buy It Now for only: $399.00 |
 CAD M9 Condenser Tube Mic Shock Case Filter Cables $299.99 Time Remaining: 29d 15h 15m Buy It Now for only: $299.99 |
 Neumann CMV563 Tube Condenser Microphone + M7 newly reskinned + PSU + cables $1,480.00 Time Remaining: 6d 19h 34m |
 MXL Genesis Condenser Tube Microphone Large Diap Interface + AUDIOBOX + POP FIL $599.90 Time Remaining: 14d 1h 50m Buy It Now for only: $599.90 |
 H Technology QCM 2 Tube Condenser Microphone NEW $219.00 Time Remaining: 18d 20h Buy It Now for only: $219.00 |
 Apex APEX460 Recording Studio Mic TUBE CONDENSER MICROPHONE $279.99 Time Remaining: 23d 58m Buy It Now for only: $279.99 |
 sE Electronics Gemini II Large Diaphragm Dual Tube Cardioid Condenser Microphone $899.95 Time Remaining: 11d 18h 47m Buy It Now for only: $899.95 |
 Studio Projects TB1 Tube Condenser Microphone $219.00 Time Remaining: 6d 19h 35m Buy It Now for only: $310.00 |
 CAD Trion 8000 Multi Pattern Studio Tube Condenser Mic FREE NEXT DAY AIR $219.00 Time Remaining: 22d 4h 14m Buy It Now for only: $219.00 |
 AKG Perception 820 Tube Condenser Microphone Bundle Dual Capsule Mic BRAND NEW $419.00 Time Remaining: 3d 3h 24m Buy It Now for only: $419.00 |
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 Neumann M 149 Tube Condenser Mic $2,275.00 (2 Bids) Time Remaining: 4h 29m |
 H Technology QCM 3 Tube Condenser Microphone NEW $189.00 Time Remaining: 18d 20h 14m Buy It Now for only: $189.00 |
 ADK TC Tube Microphone Condenser Large Diaphragm Fixed Cardiod Open Box $429.99 Time Remaining: 11d 6h 23m Buy It Now for only: $429.99 |
 Rode NTK Vacuum Tube Condenser Mic $529.00 Time Remaining: 27d 18h 56m Buy It Now for only: $529.00 |
 Groove Tubes GT Convertible FET Condenser Microphone Two mics in one $64.99 Time Remaining: 14d 3h 57m Buy It Now for only: $64.99 |
 M Audio Sputnik vacuum tube mic microphone large condenser shockmount hard case $99.00 (1 Bid) Time Remaining: 6d 22h 21m |
 MOHAVE MA 200 TUBE CONDENSER MICROPHONE $799.00 Time Remaining: 26d 22h 22m Buy It Now for only: $799.00 |
 BLUE Microphones CACTUS Vacuum Tube Condenser Microphone W Extra Capsule $1,999.00 Time Remaining: 21d 6h 56m Buy It Now for only: $1,999.00 |
 Neumann M 147 Lg Diaphragm Tube Condenser $2,899.95 Time Remaining: 26d 17h 57m Buy It Now for only: $2,899.95 |
 Newmann Retro MkII Aeg Telefunken Tube Condenser Microphone $903.67 Time Remaining: 2d 20h 49m |
 Neumann M 147 Lg Diaphragm Tube Condenser $2,899.95 Time Remaining: 26d 18h 11m Buy It Now for only: $2,899.95 |
 CAD Trion 8000 Multi Pattern Condenser Tube Microphone Deluxe Bundle $409.99 Time Remaining: 23d 22h 31m Buy It Now for only: $409.99 |
 Sterling Audio ST69 Multi pattern Tube Condenser Mic $475.00 Time Remaining: 21d 6h 50m Buy It Now for only: $475.00 |
 MXL 9000 Tube Condenser Microphone $199.95 Time Remaining: 26d 1h 25m Buy It Now for only: $199.95 |
 AKG D224 E PAIR VINTAGE TUBE MICROPHONE + PSU + CABLES TUBE VALVE CONDENSER MIC $570.00 Time Remaining: 3d 22h 20m |
 Rode NTK Vacuum Tube Condenser Mic $529.00 Time Remaining: 27d 19h 12m Buy It Now for only: $529.00 |
 CAD Trion 8000 Multi Pattern Condenser Tube Microphone Bundle $399.99 Time Remaining: 23d 21h 57m Buy It Now for only: $399.99 |
 Sterling Audio ST44 Small Diaphragm Tube Condenser Microphone $272.99 Time Remaining: 5d 7h 6m Buy It Now for only: $272.99 |
 Vintage tube condenser microphone RFT CM7151 Germany GDR 1954 $15.50 (2 Bids) Time Remaining: 8d 15h |
 ADK TT LARGE TUBE Condenser Microphone Area51 TT 9 Polar Patterns Studio Mic $730.99 Time Remaining: 23d 22h 16m Buy It Now for only: $730.99 |
 Hosa QCM 3 Tube Condenser Microphone $150.00 Time Remaining: 14d 3h 39m Buy It Now for only: $150.00 |
 Apex APEX460 Recording Studio Mic TUBE CONDENSER MICROPHONE B $249.99 Time Remaining: 25d 18h 15m Buy It Now for only: $249.99 |
 AKG Perception 820 Tube Condenser Microphone W Remote Power Supply NEW $699.00 Time Remaining: 16d 4h 46m Buy It Now for only: $699.00 |
 Vintage tube condenser microphone body RFT CM7151 Germany GDR 1954 $9.99 (1 Bid) Time Remaining: 8d 15h 13m |
 AKG Perception 820 Tube Condenser Mic +Auralex Mudguard $699.00 Time Remaining: 17d 19h 47m Buy It Now for only: $699.00 |
 Avantone Pro CV 12 Multi Pattern Tube Condenser Microphone Mic CV12 PROAUDIOSTAR $499.00 Time Remaining: 15d 19h Buy It Now for only: $499.00 |
 MXL 9000 Tube Condenser Microphone $199.95 Time Remaining: 26d 1h 21m Buy It Now for only: $199.95 |
Tube Condenser
Led Tube cool-running drive reliability guarantee
A key technical challenge is to Led Tube lamp drive under the operating environment in the low reliability. Most Led Tube lamp drive power in cold temperature environments showed different types of acclimatized phenomenon is characterized by a more prominent and long-term low temperature does not start normally under low temperature operating environment, a higher failure rate phenomenon. The main reason is that the above problems, power supply devices in the design phase of the selection of low-temperature working status did not consider the reliability of some of the key components of the characteristics of low temperature environment changes, resulting in low drive can not boot or normal operation, a malfunction The specific reasons are the following:
(1) switch to download at low temperature carrier density and activity are reduced overload protection will thus reducing the start point.
(2) electrolytic capacitor electrolyte at low temperatures, freezing, loss of capacitance effects (ion in the solution at this time there is only ionic polarization), no load capacity.
(3) some types of optical coupling device does not work under low temperature.
(4) to prevent input inrush current thermistor resistance at low temperatures become larger (which is at room temperature for 3 to 5 times), can also cause hypothermia not start.
The way to resolve these issues mainly Aluminum Casting from the temperature characteristics of a better choice to start the device. For example, not all of the electrolytic capacitor can not work at low temperatures, in general, 200V electrolytic capacitor over poor low temperature characteristics, while the 160V electrolytic capacitor below basic are able to work at -40 ℃ environment, as long as the selection of two Serial use of low-voltage electrolysis to solve the problem. Selection of the adjustment device may slightly increase the cost of the drive, but from the Led Tube lights look at overall cost is negligible, considering the increased reliability and lower maintenance cost factors, this design is very necessary adjustment and cost-effective .
Led Tube lamp protective measures against ice condensing
Promote the use of lights in the cold regions is very easy to be overlooked is the question of the surface of the ice and snow accumulation in the light, heat melted the ice, ice, once formed, will be on the vehicles and pedestrians have a very big security risk. Especially Led Tube lights, commonly used as light aluminum shell, the surface of alumina a hydrophilic material, more prone to ice condensation. In 2008, a wide range of snow in southern China, resulting in a large number of aluminum wire surface high-pressure ice condensation, collapsed a large number of power facilities damaged. Consequences of this disaster is not only the climate caused by the high-voltage cable alumina surface hydrophilic materials are also an important incentive. The impact on road traffic safety, the prevention of ice condensation is Led Tube lights in the cold regions must take into account the security measures.
To address this critical technology, we are on the ice surface by the microscopic image analysis, analysis of surface water ice, and ice surfaces can be firmly attached to the cause. Experimental results show that performance only of hydrophobic material, to prevent the effect of ice condensation is not ideal, and even in some surface water can be very cold fruit. The results show that: the ice can be attached to any object on the surface; object surface cracks and dents, is to firmly adhere to the ice surface on the other main reasons; simple hydrophobic materials with good performance, delay the ice process, but can not prevent the formation of ice.
For a more accurate comparison between different materials, the ability to prevent ice condensation, we have thoroughly studied from different angles, different objects on the surface structure, surface properties and ice inner relations, including: the structure and ice shape, structure, materials and ice , surface finish and the ice surface, rigid flexible and ice. The results show that: simple structure, shape, organization structure, the surface water, the hydrophobic component performance,Coach Bags not prone to ice condensation.
Based on data from this experiment, we set up for 2 years during the winter housing of different looks and materials Led Tube lights, found by experiment: the appearance of any lighting sleek, smooth, smooth; no accumulation of snow or water bearing structure; surface material have excellent hydrophobic properties of Led Tube lamp will not produce ice condensation.
Most of China's cold regions at high latitudes, cold climate, large temperature difference, so Led Tube application of road lighting products, has brought new challenges. On the other hand, most of the annual mean daily cold longer than the national average level of illumination, so the lighting power consumption is also higher than the national average, the shorter days and longer the geographical features of the Led Tube brought more demand for lighting applications . In short, there are both challenges and opportunities.
About the Author
Needle Valve丨Centrifugal Fan丨Solenoid Valve
where is the orifice tube located and what direction does it go?
1998 Chevrolet Cheyenne 5.0 is at the firewall or condenser outlet also how do I know which direction the orifice tube goes
It is located in the High Pressure Tube at the Evaporator Connection;;;;This orfice is installed with the tapered
screens facing You; the one screen end which has a very small metal orfice is installed to ward the Firewall;
The way system works is High Fluid Pressure is filtered and Squeezed even more at the Evaporator,When it enters Evaporator,The Rapid expansion causes Cooling;It is then Low Pressure;This High Pressure becomes low Pressure and Coolant Boils,becomes very cold;The fan blows across Evaporator and cools car;It then carries heat back to Condenser and is cooled to a Liquid which goes to Compressor and is Pressured into a Liquid;
Lauten Audio "LT-381 Oceanus" — Tube Condenser Microphone