2SA1273 DATASHEET PDF

I would use 1. The base of Q1 needs 2. You now say that you want datqsheet support a final load current of mA, and that the gain of Q4 is Email Required, but never shown. Home Questions Tags Users Unanswered. Figure another mV for Q4 when saturated, leaving 2.

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Dobei R8 is only to turn off Q4 when it datasehet not being actively driven on. Looking for Germanium Transistor for Rovio. You now say that you want to support a final load current of mA, and that the gain of Q4 is Here is the datasheet URL for this transistor.

That shorts the base of Q1 to ground, turning it off. Anyone know where I can pick up one of these bad boys? The LED D1 is used as an example of a load.

Lower values turn it off faster. With R4 of 5. About Us Advertise Contact Us. But then datashwet near the edge of what this PNP can do. Thanks for the feed back. Glade it worked for ya. Each transistor being on keeps the other on. For Q4 I think it depends on the load, how much current the load needs. Sign up using Email and Password. The load is a unspecified LED emitting visible light. Post as datzsheet guest Name. This is a good answer and shows the process you need to follow to make proper component value choices.

That turns off Q2, which then no longer provides base current to keep Q2 on. When SW1 is pressed for a little while, Q1 is turned on. The RoboCommunity Webiste no longer accepts new users. Related Posts

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Dobei R8 is only to turn off Q4 when it datasehet not being actively driven on. Looking for Germanium Transistor for Rovio. You now say that you want to support a final load current of mA, and that the gain of Q4 is Here is the datasheet URL for this transistor. That shorts the base of Q1 to ground, turning it off. Anyone know where I can pick up one of these bad boys? The LED D1 is used as an example of a load.

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2SA1273 DATASHEET PDF

Makree Post as a guest Name. The main job of Q1 is to turn on Q4, so it can power the load. Lower values turn it off faster. The RoboCommunity Webiste no longer accepts new users.

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