How do I know if which leg is the emitter or the collector? (Transistor ...
Dec 6, 2011 · Off the cuff - for jellybean transistors I almost invariably use BC337 (NPN) and BC327 (PNP) - both CBE. A transistor selector book woul;d be the easy way to check distributions as they …
BJT high frequency analysis - Electrical Engineering Stack Exchange
Jan 19, 2020 · From what I remember, the Cbe depends on the emitter current. Higher current causes lower reac (1/gm); at 1mA, its 26 ohms. at 2mA its 13 ohms 2mA is 4 volts / 2Kohm (ignoring the …
Radio transmitter using a crystal oscilliator
Dec 16, 2023 · I am on a mission to control my RC car using a Arduino. The simplest way I thought of doing this is to add Arduino outputs into the transmitter. Long story short I wanted to learn more …
Simple circuit works with BC547, but not with 2N3904
May 27, 2023 · 19 The transistors can be used interchangeably and exchanged, yes, but they don't have the same pinout. BC547 has CBE and 2N3904 has EBC.
Wrong footprints in KiCad - Electrical Engineering Stack Exchange
I am designing an audio amplifier and I realized that the footprints that came with KiCad are wrong. I connected the transistor Q9 like this: But in the CvPCB, the transistor appeared like this: As...
Finding the Base-Emitter Voltage in an NPN Transistor
Start by solving for the base current, treating the BE junction as a diode in series with Rb. The collector current doesn't really effect the base current. Then use beta to get the collector current and calculate …
Common Base amp gain problem - Electrical Engineering Stack Exchange
Aug 27, 2017 · simulate this circuit – Schematic created using CircuitLab Here's a little schematic I built for my 27MHz colpitts oscillator, which outputs approximately 120mVpp. Since the common …
NPN transistor not switching 12V from microcontroller
Jan 21, 2017 · simulate this circuit – Schematic created using CircuitLab I'm at a complete loss over here. What I'm trying to do is switch 12V voltage with a NPN transistor (the switched signal later …
voltage - Calculation of the capacitor value across the base and ...
Oct 10, 2020 · Your title talks about a base-emitter capacitor, but you show a base-collector capacitor, which is it? What is the application of the circuit, and the reason to 'avoid turn on'? Without this …
Vb and Vbe of a transitor - Electrical Engineering Stack Exchange
Sep 23, 2023 · Is VB and VBE, of a transistor the same? If not, how is Vbe generated? ....and must the base voltage of a transistor be equal to 0.7 or can it exceed this value.