Questions tagged [transistors]
A transistor is a semiconductor device that can amplify signals and switch power. The types that are used most are BJT (Bipolar Junction Transistor), UJT (Unijunction Transistor), and MOSFET (FET, for Field Effect Transistor).
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Transistor switching speed
I want to be able to identify the speed of a transistor in terms of switching. Most datasheets don't indicate that but I found this transistor from ST-Electronics. Is it the maximum switching ...
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RBL43P transistor
I have a circuit with transistor with marking: RBL43P that needs replacement. All search for datasheet was unsuccessful. Voltage to the supposed base of the transistor is about 33 volts.
Does anyone ...
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Diagnosis and Replacement of 2N1101 transistor
I have a circuit board with 3 transistors on it, all of them are 2N1101. I'm trying to diagnose the problem with the board with the diode tester on my multimeter. I found 2 of the transistors have a ...
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How can I get these electronic components [closed]
How can I get these electronic components?
What is the difference between H10 ON and H30 ON?
All of them have 8201AG,NGD
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Help with circuit analysis - Transistor, dc-motor, arduino, resistors
currently I am trying to improve my skills in electric circuits by small hobby project. I want to spin one mini dc motor, which is just spinning if the Arduino activates the flow of current with a NPN ...
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Import transistor into LTSpice
I would like to import this transistor -> RFD16N06LE (datasheet: https://www.alldatasheet.com/datasheet-pdf/pdf/67811/INTERSIL/RFD16N06LE.html) into LTSpice; the datasheet has a PSPICE model ...
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Finding relationship between saturation current and Vgs for MOSFET?
I would like to use a MOSFET to control a continuous current (i.e. by changing gate voltage), the specific MOSFET I want to use is RFD16N06LE (datasheet: https://www.alldatasheet.com/datasheet-pdf/pdf/...
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Switching ON/OFF an ADC line
which electronic component could one use to switch ON/OFF several external lines for ADC?
Context:
I am working on a small project where I would like to measure 4 external voltages (0-3V range, let's ...
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4N25 Optocoupler design
Below is a simple 4N25 optocoupler circuit that I designed in LTspice.
10 mA is flowing through the input. It works in saturation. According to the datasheet in Figure 2 (CTR-sat), it says 0.7, so the ...
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Why does this transistor amplifier fail if Rc is greater than 50 ohms?
This simple circuit amplifies a 1 µV 50 ohm 7 MHz signal (e.g. RF off an antenna) quite nicely (31 dB):
However, I'm stumped as to why R2 must be so low (50 ohms), giving a Ic of close to 50 mA. ...
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Is my setup for a 5V motor project faulty?
I'm trying to get a motor (5V nailbrush, no name, no specifications whatsoever) to spin for a set time and pause for a set time using a PIC10F200 microcontroller in conjunction with a 2N2222 NPN ...
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Will this 3.3 V signal voltage be high enough to close Q3?
3 V signal (PWR-ENABLE) be enough to turn on this circuit?
The collector of Q3 will be at 11 V before switching is to occur.
Q3 Data sheet
Q1 Data sheet
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Transistor AND gate problem
I am new to electronics and I built a simple AND gate from 2N2222 transistors. I want to use the output from the AND gate in a different circuits not just an LED but maby an OR gate. Can someone tell ...
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Power dissipation in an IC
Here is LM741 op amp circuit in Figure 1. The amplifier has two power supplies \$V_{cc}\$ and -\$V_{ee}\$. The up arrows are connected to the positive power supply \$V_{cc}\$ which is +15 V. Current ...
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Why is a push-pull transistor configuration asymmetric?
Looking at the circuit below:
How do I analyze it? Specifically, why is the output able to go nearly all the way to +12 V but not beneath 0 V? I'd expect that when V(sig) < 0, since current flows ...
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