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Transistor Type Npn

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24 Threads found on Transistor Type Npn
by calling it N channel do you mean its basically a IGBT equivalent of a npn bipolar transistor, except that instead of a gate that conducts it has a isolated mosfet like gate(whatever the IGBT inner structure was) ?
Hello everyone, I am currently using a device that is designed to measure temperature from a diode connected BJT. The current data illustrates a 0.5 C difference between an npn or a PNP transistor that is connected as a diode. For the npn case, the base-collector is shorted and a series of small currents are forced into this (...)
Hello. I'm having difficulties deducing which addition of what type of transistor is the best option for me while enabling a variable linear regulator to use its max 50mA output to be used as a max 5A output. Here are two examples I know of, the npn darlington is the one I went with first and have it on a prototype in (...)
Some of these transistors are npn, some PNP type, they have different voltage and current rating and probably different switching speed.
Can anyone knows 1558B npn transistor datasheet?
hi. i want simulate a oscillator circuit with NEC2sc3358 transistor in ADS,but i don't have nonlinear model (parasitic internal capacitances and inductances) of it.can anyone help me?it has a datasheet in internet that only have voltage and current characteristics...:-( or what transistor work likely NEC 2sc3358?
pn5179 transistor equivalent for use in the attached schematic?
Your assumption is basically correct. The terms are describing the output polarity of sensors with digital logic output based on an output transistor in common emitter configuration. "PNP" refers to positive supply switching, "npn" to ground switching. "PNP" is the output type needed to interface with industry standard PLCs.
Your IC shows no ground connection. Don't know if it is implied. In any case the bias current goes into the npn transistor, then that current needs to have a path to ground. This is chancey, seeing the components being in the emitter leg. Consider putting the converter assembly in the collector leg. Or you might substitute a PNP type instead.
sorry, it is not clear. You have a 555 with pin 3 driving the base of a transistor ? is it npn type ? or are you talking about the output transistor integral within the 555 ? ok,i see mention of 4N36, why your not using a discrete transistor, like BC547 I think the first thing you should determine with (...)
as i would need to apply current to pnp transistor's base even if the motor is off There would be no power consumption in off state. You only need an additional low power npn transistor to switch the base current to the PNP transistor.
You can use npn transistor working as a switch and driven by 1.5V from the igniter .. See attached picture .. The type of transistor will depend on the current required to drive the fan .. Connect the fan to a 9V battery and measure the current .. Then, select a transistor that has I at leaset twice as (...)
The basic filter design is near to a 2nd order butterworth filter, but by combining high- and low-pass to operate with a single buffer amplifier, the filter characteristic will be sligtly modified. The transistor type doesn't matter much, the circuit can work with any AF silicon npn.
Hi, I am looking for some IC which can work as high side switch with maximum supply voltage of 12V. I need the gate to control by digital signals. I can use a P-type FET along with a pull up resistor at gate and npn transistor from gate to ground, but wondering if some dedicated chips is availalalbe in market having all the features in (...)
Shouldn´t T1 be a npn and not PNP transistor as posted?
There's no BC558 npn transistor. BC558 is always a PNP type. That's why you can't find it. An npn type would be for example BC548.
I'm trying to make a transistor-based switch that will turn on when the resistance from the LDR is larger than a certain resistance and will turn off when the resistance is less. I've made switches using 2n3904's that turn on when the resistance is low, I just need that for the other way around. Also, it has to be as efficient as possible as it
The lm317 is not a transistor , it is a voltage regulator ( ajaustable type). It would not be possible to replace this with anything other than another regulator. You would have to do a considerable amount of change to the circuit if you were going to use a transistor
Hi, Have a look at these posts * by t
you can use the concept that the Base Emitter terminal act as a diode and hence there is gonna be a large resistance in reverse bias hence you can use the polarity applied between the base and emitter terminal using the leads of the multimeter to identify whether base is P type or N type and hence guess the type of transistor