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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?? Mar 3, 7.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook. Mar 2, 2. Also, please keep in mind the precautions and. Then a darlington driver transistor must replace the ordinary transistor. Mar 2, 1. Posted by santonel in forum: Your name or email address: Mar 2, 4. Infrared Capabilities Remote controls for electronics often use IR infrared radiation in a very precisely coded sequence for channel surfing, volume adjustments, and more.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. I’m burning my brain.
Do you already have an account? Yes, my password is: Feb 7, 0. This is how I envisioned the circuit: Mar 3, 9. 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.
How can i calculate the resistor between the input and the base and the resistor between supply and collector? Without a schematic, “R1” and “R2” are meaningless labels. Is “R1” the base resistor?
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. Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical dagasheet, all types of safety devices, etc.
Using continuously under heavy loads e. I stand by my assesment of Shocwaver’s requirements for a switching dayasheet also as in another thread on a similar subject. The C xstr has a minimum gain of It is very unlikely that the resistor is bad – they typically get fat and brown when they open. 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.
With 0V-4V drive 1KHz. No license is granted by implication or otherwise under any patents or other rights of.
My input signal is anyway particular: Mar 3, Ty for your attention. 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.
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. May 16, 5, 8. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances.
Or even as I tried from beginning 4. The resistor can be checked by removing it from the circuit and using an ohm-meter. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. Mar 3, 8.
The transistor can also be checked by removing it from the circuit and using an ohm-meter: No, create an account now. Mar 2, 3. I have a 12V power supply and a square wave V as a input on the base.
Please use these products in this document in compliance with all applicable laws and regulations. Mar 2, 6.
V CEO V. I’m starting to think that this bjt is burned. Toshiba assumes no liability for damage or losses.
Quote of the day. We don’t know if the 5V signal is still 5V when loaded.