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.

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But someone correct me if I am wrong, but your schematic shows a simple biased amplifier, so you would really have 2.

When it is configured like that, if you touch not literally to the base of it, creating a small change, the output will be changing largely. This page was last edited on 18 Octoberat With the right component values, you will be able to have an analog voltage level depending on the sound amplitude. From Wikipedia, the free encyclopedia. In other projects Wikimedia Commons. I’m not looking for a logicthe Arduino’s analog inputs have a bit ADC that gives for 0V-5V, respectively.

Further, is there some reason why this is so uncommon, or undesirable? In order to solve your final question anyway, you have to rectify even with a single diode the output and apply the result to a load a resistor would be fine and feed this to the arduino analog input.

2N3904 Datasheet, Equivalent, Cross Reference Search

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of 2n3904. If it was fully OFF, it would be not conducting at all. It seems that you want an AC level which diminishes in magnitude as the input voltage increases.


If it was fully ON, it would be transistlr. Views Read Edit View history. You can use values up to uF. If you use an audio transformer instead of a capacitor you could change the signal phase as you please.

Capacitors do not transiztor DC voltages pass through them. What you’ll have at the output is AC, a capacitor blocks DC. The transistor will amplify these small changes so they can be viewed easily: Think of tranzistor sine wave. What if we combine the two circuits mentioned above. Because it has attracted low-quality or spam answers that transiwtor to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count.

If this is the case you need to state it clearly. When there is a whisper, the peak to peak amplitude will be about 1Vpp with changing frequency because of the speech. But remember, we had some biasing to it which is a DC voltage.

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

However, my comment above transiwtor the DC offset. Ehryk Nope, the output will be somewhere between 0 and 5V. Circuitbuilding do-it-yourself for Dummies. In this configuration, the transistor is biased to be in the linear region.

Home Questions Tags Users Unanswered. R1 is for supplying power that is needed by the microphone and this is called biasing the 2n304.


Ehryk Yes, you can add an output capacitor and an envelope detector.

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

First of all the part with the microphone. This is because of the capacitors. Perhaps I’d need a diode to not be passing negative voltage to the Analog comparator? Here’s what I want instead:.

Commons category link is on Wikidata. Wikimedia Commons has media related to 2N Imagine that there is nothing else but the below schematic:. If what you want is a sound level sensor, one easy way is to add, after the output cap a circuit called “demodulator” or “peak detector”, easily implemented around a diode and a few passive components.

Experiment with different sound levels, for example clap, talk, shout, be quiet, whisper, and see the analog reading changing. Can you give circuit diagram for this? It will generate an AC voltage. Then what is the simplest non-IC non-inverting amplifier irrespective of class or common-emitter?

Can you add a diagram of this? Felice Pollano 5 It looks like I want the above with an envelope detector, however that would only get me from 0V to 2. Retrieved from ” https: The complementary PNP transistor is 2N