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The transistor can also be checked by removing it from the circuit and using an ohm-meter: Dztasheet 7, 0. Mar 3, Then you can saturate the transistor however much you want e. Mar 2, 5. Yes, my password is: Mar 3, 7. Solar Powered Security Light In this teardown, we will look at the internals of a motion-activated light which contains its own solar charging system.
My input signal is anyway particular: V CBO V. Mar 2, 4.
2SCY Datasheet, Equivalent, Cross Reference Search. Transistor Catalog
No license is granted by implication or otherwise under any patents or other rights of. Mar 2, 3. V CEO V. I’m burning my brain.
C2383 Datasheet PDF
Aug 8, Infrared Capabilities Remote controls for electronics often use IR infrared radiation in a very precisely coded sequence for channel surfing, volume adjustments, and more. Without a schematic, “R1” and “R2” are meaningless labels. Or even as I tried from beginning 4.
Mar 3, 8. We don’t know if the 5V signal is still 5V when loaded. Mar 2, 2. Quote of the day. Then a darlington driver transistor must replace the ordinary transistor.
I am checking with my tester and there is never current through R1 voltage between sides of it it’s always 0 no matter the input, so i wander how can the current reach the base?? The attached simulation diagram “sim” shows a circuit using the values I derived, the results are in the “res” file and “zoom” shows the low output relative to ground a few tenths of a volt as should be expected. May 16, 5, 8. Mar 2, 3 0. It is very unlikely that the resistor is bad – they typically get fat and brown when they open.
If you’re using the transistor purely as a switch, that means you want to saturate the output, or try to cause more current to flow from collector to emitter than your current limiting resistor will allow. Since the diode voltage of the base-emitter junction is generally about 0.
Posted by santonel in forum: Do you already have an account? How can i calculate the resistor between the input and the base and the resistor between supply and collector? Mar 3, 9. Also, please keep in mind the precautions and. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. I’m quite ignorant with transistors so I’d need help to make this transistor to work as a switch because myself I’m hitting my head into the wall since friday.
It’s the voltage given from the pins of a PC parallel port and this voltage changes depending on the load it’s driving, so i guess the right question for the base should be: I have a 12V power supply and a square wave V as a input on the base.
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Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. Mar 2, 1. Ty for your attention. Toshiba assumes no liability for damage or losses. If you don’t care whether the load you’re driving is sinking mA or mA, and it’s only important that it doesn’t exceed a maximum of mA, just choose R2 such that no more than mA can flow through it.
The bjt is of course in common emitter configuration.