![]() Having the bigger picture I think is what is needed to debug problems.Thanks for any help on this issue. Information furnished is believed to be accurate and reliable. Sometimes I think having this bigger picture understanding of what the tool wants is better than just a step-by-step procedure to do a specific thing. 2n2222 Equivalent 2n2222 Equivalent2N2222A Equivalents 2N2907 (PNP), 2N3904 (PNP), 2N3906 (PNP), BC637, S9014, BC148, 2N4403, MPS2222, PN2222, KN2222. 2N3904 - Free download as PDF File (.pdf), Text File (.txt) or read online for free. I guess I am not understanding the "bigger picture" of how symbols and models relate to the schematic and the simulator. The 2N3904 NPN Transistor is one of the most commonly used general purpose NPN transistors in. ![]() Why? Now if it turns out that what I thought was a real library of models is in fact not the case, I guess I can download a text file of the 2N3904 model, and connect it to a symbol as described in the tutorial - which is ok. So, I am totally confused as to why I can instantiate a part from a list of parts in a library, but apparently there is missing information in that instantiation that the netlister needs. So based on this, I would think I am accessing a large library of transistors, from which I can instantiate them onto the schematic and can proceed to simulate the circuit behavior.īut when I generate a netlist, the error is that 'No PSPICE template found for Q1' It is a simple, free-running oscillator circuit timed by the sizes of the resistors. So I click on it and hit the place button, and instantiate it onto the schematic, which it shows as Q1 Circuit 6: 2N3904 Sample Circuit-Amplifier. Under Libraries, it shows '2N3904/Transistor.olb' - which I then double-click onĪt the top, it shows a long list of transistors, one of which is '2N3904/TRANSISTOR' Due to this biasing current, 2N3904 goes to the saturation state and the LED turns ON.Is a 2N3904 Model Built Into the PSPICE-TI Download?Īt the bottom, I click on 'Search for Part' and enter '2N3904' There are several advantages with multistage amplifiers, notably achieving high gain with good frequency response and low level distortion. When the switch is closed, the base of the transistor is biased, and current flows to the base of the transistor. Emitter collector - saturation voltage less than 300 mV at Ic 10mA Pins: 3 Alternative: NTE123AP. Buy Now Multi Stage BJT Amplifier This article shows a design process for a simple four stage BJT Amplifier based on the popular silicon 2N3904 NPN transistor. Due to this, 2N3904 remains in the cut-off state and the LED does not glow. And no current flows to the base of the transistor. When the switch is open, the base of the transistor is not biased. Download it, it is an ASCII file in SPICE format: comes from National Semiconductor component model describes frequency response, input and output impedance, etc. The required resistor value can be easily calculated using Ohm’s law. Proper biasing of the base ensures adequate base current to turn ON the transistor.Ī resistor of 220 Ohm is connected between the load(LED) and the collector terminal to protect the LED from overcurrent. The base of the transistor is biased using a 10 K Ohm resistor(R3) in parallel to the 1 K Ohm resistor(R2) plus base-emitter junction resistance(in series). 2N3904 Transistor Datasheet, you can free download the doucuments,view rich technical resource files,datasheet,electronic components tutorial at Jotrin. The complete circuit is powered via a 5 V supply. Sign in or create a free account to access 1 year trend. Octopart is the world’s source for 2N3904 availability, pricing, and technical specs and other electronic parts. In the circuit diagram given above, 2N3904 is used as a switch to turn ON/OFF an LED connected at the collector terminal. Find the best pricing for 2N3904 by comparing bulk discounts per 1,000.
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