TECHNICAL DATA. KN/A. EPITAXIAL PLANAR NPN TRANSISTOR. Revision No: 0. GENERAL PURPOSE APPLICATION. SWITCHING APPLICATION. KNA Description = General Purpose Transistor ;; Package = TO Part Category: Transistors Manufacturer: KEC Corporation Description: Small Signal Bipolar Transistor, A I(C), 40V V(BR)CEO, 1-Element, NPN, Silicon, TO -.
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So, using the 30 ohms resistors, patricktoday suggested, works like charm. Sep 22, 4. If the part number on your relay ends in “-5”, it is designed for use with a 5 volt power supply. This kb2222a you are probably only getting 4V across the relay at best.
I was just speculating the base current might be pulling down your voltage source you could measure the base voltage to check for that. Discussion in ‘ General Electronics Chat ‘ started by cincirSep 22, Sep 22, 3 0.
Apr 5, 5. Digital Tattoos Bend The Limits Digital tattoos are an interesting implementation of an new category of “flexible electronics. Your name or email address: Sep 22, 1. In any event, compound transistor connections aren’t magic. I checked so many times the wiring Sign up using Email and Password. Thank you in advance. Apr 5, 1. Newbie with a 2N transistor problem Posted by neville s in forum: WhatRoughBeast 49k 2 28 Do you already have an account?
When I check both datasheets their characteristics are not the same but smilar and according to the measurements all the Voltage and Current values are in range. Also note the catch diode. Connecting the gate at 12V immediately runs the motor, so transistor piout discarded.
Quote of the day. Find out in this Teardown Tuesday! Capacitor, Reverse bias diode and resistor circuit Posted by 13th Warrior in forum: Anyway, now, connecting the 5V from the Arduino to the base directly just testing fully saturates the power transistor, but doing so shutdown the board in less than a second.
KN2222A Datasheet PDF
Sep 22, 2. I have little electronics background so maybe I’m missing something obvious. The first transistor will saturate according to the data sheet at 0.
Read page 2 of the data sheet. Apr 5, 2.
KNA (KEC) – General Purpose Transistor, Package = TO | eet
Andy aka k 10 Yes, I certainly did check many times. The circuit below is the last attempt to make this work with the two transistors. Sign up using Facebook.
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