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Can I substitute any transistors in a 1.5 volt LED flasher I have always seen 1.5v LED flashers with transistors that I just can't find The transistors I have are 2n3904 3906 3907 4401 2222 4403?
Wiki User
∙ 14y ago
Here's a link to a 1.5v LED flasher circuit that uses 2n3904s and 2n3906s. http://www.electro-tech-online.com/electronic-projects-design-ideas-reviews/10228-led-flasher-1-5-volt-battery.html Mike
Wiki User
∙ 14y ago
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What can replace for 2N3904?
2N2222
What can replace for 2N3904 transistor?
2N2222
Where can one purchase a 2n3904?
You can go to pages in the internet like amazon to purchase something like 2n3904. There are many differerent shops or market and you can try them out. Just watch out that they are serious.
Which transistor is used in internal structure of LM 1496 balanced modulator demodulator IC?
A 2N3904 is the one in this package.
What is the relation between transistor current?
transistor current is dependent on a factor known as Beta of the transistor. a darlington pair has a large Beta(10,000) , a small signal transistor such as the 2n3904 has a small beta of around 100. the beta of a transistor determines the amount of current that flows from collector to emitter ( bipolar transistors) for each amount of current that flows into the base you get a hundred fold increase between collector and emitter (2n3904), so you insert 1 ma (milliamp) into the base, you get 100 ma out the emitter. there is a doped region in the middle of the transistor that expands when current is applied to the base, this expansion allows more current to flow from collector to emitter (npn). there are many types of transistors but they all employ basically the same function. The mathematics involved is a bit more complicated but I speaking in general terms here to avoid getting someone lost.
Where to find a transistor Capacitor Resistor?
!I need to find this :Capacitors: 2 off 220uF 16v electrolytic.5 off .01uF polyester.5 off .1uF polyester.Resistors: All resistors 1/4 watt 5%6 off 10k1 off 1K1 off 2.2m ===== 2.2 Mega ohm2 off 39kTransistors: All BC 184B, or 2N3904, or 2N2222A. Just about any small signal npn with a gain of 250+ will do. There are hundreds to choose from.Can you find all the components in a radio , or anything else ?I don't wanne buy things ,so.Sorry for my bad English , I'm dutch !Thanks !
Can you explain the main function of the three parts of transistor?
individually, each part has no main function. it's when you use them in conjunction with one another that you get the amplification process. now for an example lets use a simple BJT, say 2N3904 is a NPN transistor. now to better understand picture a diode between the base and the emitter where the anode is at the base and cathode at the emitter. bias the collector at +5V and put the emitter at zero for reference (ground). now lets say you apply 3V to the base, it's going to kick on that "diode" between the base and the emitter and your going to get current to start coming from ground into the emitter. when that current hits the base its just going to keep going (such a small amount is lost through the base that we can ignore it, i'm talkin micro-amp range) the current just goes up through the collector and to your load. now this is an extremely basic example, you'll have to do much more in depth studies to fully under stand how it works.
