2N Datasheet, 2N NPN General Purpose Transistor Datasheet, buy 2N Transistor. Part Category: Transistors Manufacturer: Vishay Intertechnology, Inc. Description: Small Signal Bipolar Transistor, A I(C), 40V V(BR)CEO, 1-Element, NPN. December, − Rev. 4. 1. Publication Order Number: 2N/D. 2N, 2N 2N is a Preferred Device. General Purpose. Transistors. NPN Silicon.

Author: Samugrel Mezilmaran
Country: Ghana
Language: English (Spanish)
Genre: Photos
Published (Last): 20 May 2005
Pages: 165
PDF File Size: 14.33 Mb
ePub File Size: 13.85 Mb
ISBN: 944-8-28327-594-8
Downloads: 19928
Price: Free* [*Free Regsitration Required]
Uploader: Zum

Also, wouldn’t the peak detector vary between And doing this is easy with a simple, single capacitor. Is there a reason for this beyond being uncommon?

The common emitter class A amplifier is always inverting even if you use a PNP, the only difference is you invert the power supply polarity. If it was fully OFF, it would be not conducting at all. Felice Pollano 5 There is no reason to invert the signal at all.

Joan 5 6. Reading your question and comments it appears that your questiojn is not clearly stating what you want.

It will generate an AC voltage. With the right component values, transkstor will be able to have an analog voltage level depending on the sound amplitude. As far as I understood, you are trying to make some kind of a sound level detector, which will let you detect if there is a sound with a certain volume or not. IF you are talking about DC levels the question is still unclear.


Ehryk Yes, you can add an output capacitor and an envelope detector. The complementary PNP transistor is 2N The 2N is used very frequently in hobby electronics projects, including home-made ham radioscode-practice oscillators and as an interfacing device for microcontrollers. What you’ll have at the output is AC, a capacitor blocks DC. I understand most of that, thank you. You can beg Google for more detailed information.

I’m looking to simply read the generic sound level from an Electret Microphone.

2N Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

We have blocked the DC portion of the voltage on the electret microphone. This transistor is low-cost, widely available and sufficiently robust to be of use by experimenters and electronics hobbyists. Experiment with different sound levels, for example clap, talk, shout, be quiet, whisper, and see the analog reading changing. Also, notice that there is no more an output capacitor. Wikimedia Commons has media related to 2N Simply invert the output a second time, using a 2 stage amplifier.

If you have an oscilloscope, view the waveform on the output. A capacitor does not let the DC to pass, but lets AC pass easily. Yes, but a diode will drop 0. Capacitors do not allow DC voltages pass through them. The higher-power 2N is a very similar NPN transistor that can safely switch three times as much current as the 2N The transistor will amplify these small changes so they can be viewed easily: Note that you could add a second inversion in this instance by simply interchanging R1 and the microphone.


I realize I could easily correct for this in software, but it just seems backward to me in a way and I cannot find any examples of a non-inverting output with a PNP transistor. But it is in the middle, which is called the linear region. This means that you will have an output voltage somewhere between 0 and 5 V, depending on the sound level.

Imagine that there is nothing else but the below schematic: Wouldn’t the capacitor do just that, if I then somehow reversed the negative portion of the wave and then smoothed it some? If you use an audio transformer instead of a capacitor you could change the signal phase as you please.

2N3904 Datasheet, Equivalent, Cross Reference Search

This transistoor be read by the ADC easily into ‘sound level’ without much work at all. Ehryk Nope, the output will be somewhere between 0 and 5V. If this is the case you need to state it clearly. Can you add a diagram of this? Commons category link is on Wikidata. Retrieved from ” https: