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What is this transistor C2482?
C2482 NPN HV Video Output TransistorFeaturesCollector-Emitter Volt (Vceo): 300VCollector-Base Volt (Vcbo): 300VCollector Current (Ic): 0.1Ahfe: 30-150 @ 20mAPower Dissipation (Ptot): 900mWCurrent-Gain-Bandwidth (ftotal): 50MHzType: NPN
What is the atmospheric pressure if the partial pressure of nitrogen oxygen and argon are 442mm Hg 118.34mm Hg and 5.66mm Hg respectively?
These three components are the three largest components of air. The total pressure of a gas mixture is just the sum of the partial pressures of each component. Air is a mixture and nitrogen, oxygen, and argon are the three biggest components. So, the atmospheric pressure (or air pressure) would be the sum of the partial pressure of each component of the air: Ptot=PPnitrogen + PPoxygen+ PPargon = 442 mmHg + 118.34 mmHg + 5.66 mmHg = 566 mmHg
What is description of bc147 transistor?
This is the European "Pro-electron" numbering system compared with the US JEDEC system (2N etc)First - LetterA = Germanium DeviceB = Silicon DeviceC = Gallium ArsenideSecond - Letter for A/B/C devicesA = small signal diodeC = small signal general purpose transistor (for audio or slow speed switching)D = power transistor (audio and low frequency applications_F = small signal RF transistorT = SCR / ThyristorU = power transistor for switching applicationsY = rectifier diodeThird + Fourth + Fifth - Unique identifier numberSome manufacturers put some significance on the number. For example Mullard/Philips treated the second digit of 4 meaning NPN Lockfit case and 5 meaning PNP lockfit. Many used 6 for TO92 cases.An optional letter followed indicating a gain grouping ... typically A being lowest, B middle and C highestDifferent manufacturers created similar transistors with different type markings.e.g. BC107 BC167 all functionally very similar.So, the BC147 is a Silicon small signal audio transistor with a "Lockfit case" originally manufactured by/for Philips/Mullard. A viable replacement today, if you can't find a 147 is a BC547 If there's a gain grouping letter, you need to match the gain grouping either by a comparable letter, or by testing. Careful with the pinout.There are a cluster of similar transistors ...So, the BC147 is one of a cluster of 3 similar transistors ... BC147/148/149. BC147 has ratings of VCE 50, VCB 45 ICMAX 100 hfe 125-500BC148 has ratings of VCE 30, VCB 20 ICMAX 100 hfe 125-500BC149 has ratings of VCE 30, VCB 20 ICMax 100 hfe 240-900 Noise 2dBLockfit transistor pinout (wideface down)BE CBC547 pinout (flatface down)E B C
