C3866 TRANSISTOR PDF
C Datasheet PDF – NPN Power Transistors – SavantIC, C datasheet, C pdf, C pinout, data, circuit, C equivalent. CAU5F  – C TRANSISTOR NOS(New Old Stock ) 1PC. CAU5F PART NUMBER REPLACE PART SUMMARY. NTE – NPN Transistor, SI High-Voltage/High-Speed.
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Note that hfe is the same as beta.
Second, I probably should have indicated that I am used transkstor 10W 12V LEDs which I did a few tests on before hand to obtain a general range of internal resistance. Home Questions Tags Users Unanswered. Andy aka k 10 Actually, from the data transjstor, at 1 amp collector current, a mA base drive will only drop your Vce to 5 volts using the C, so I don’t recommend using it.
What you may measure is the average Vce. Show More Show Less. Obviously the LED resistance changes with several factors, and I have blown out a few, but that was due to soldering issues on my part. So the resistor transistof be about 10 ohms.
But do take power dissipation into account. Sign up using Email and Password.
You need to keep in mind that, with a 5 volt supply, a putting out. What you need to learn first cannot be tranisstor here in a few lines. Please educate yourself first before proceeding. Your problem is most likely that you are not able to provide enough base current to turn the transistor fully on. Ok, first of all thank you for your feedback.
LEDs have a very sharp voltage-current relation.
Fuji C Toshiba 2SC https: I have measured the output of the timer at 2V RMS and set the resistor values for each transistor according to their Ib vs Vce graphs around 0. For high power LED drivers like this you really must know what you’re doing. Let us fix the problem for you. The design powers them almost directly from the mains, but limits current using a and beefier NPN. Furthermore, the Vbe will be about 0.
I have been working on a high-powered LED light bar.
The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable. The next issue is you need an inductor and capacitor to filter the “strong” square wave delivered by your switching transistor – the peak voltage across the LEDs will be basically rectified AC and this could kill them unless there is internal current limiting but, if there is then why both with this ornate solution?
Essentially I know the circuit works. Trwnsistor Volts is dangerous, 1 A through the transistor. Sign up or log in Sign up using Google. The price may be the seller’s own price elsewhere tranzistor another seller’s price.
Are you sure you know what you’re doing? Trey Carpenter 6 2. Any Condition Any Condition.
Sign up using Facebook. Take a look at this: I’d recommend that you double-check the LED current.
You think you control Vce by changing R2 but you’re not. Do this by replacing the transistor with a 1 ohm, 2 watt resistor, and check the voltage across it. As Andy aka has pointed out, you are not measuring the Vce on of the transistor.
C Datasheet PDF – NPN Power Transistors – SavantIC
Post as a guest Name. Email Required, but never shown. The “off” amount and percentage simply signifies the calculated difference between the seller-provided price for the item elsewhere and the seller’s price on eBay.
Maybe the LEDs themselves are better protected internally and this saves the day as you believe but I cannot check this as I don’t have a data sheet or part number I’m not going to follow ebay links btw – if it aint got a data sheet pdf I wouldn’t buy it! Parts labeled as “pulls” or “pulled” have been previously installed and are made by the original manufacturer. This is the price excluding shipping and handling fees a seller has provided at which the same item, or one that is nearly identical to it, is being offered for sale or has been offered for sale in the recent past.